Lenovo System x3850 X6 User manual

Lenovo System x3850 X6 (6241)
Product Guide
The Lenovo System x3850 X6 server, machine type 6241, is a four-socket 4U rack-mounted server that
represents the sixth generation of the Enterprise X-Architecture. With Intel Xeon E7 v4 processors, the
x3850 X6 delivers fast application performance, is based on an agile system design, and is a resilient
platform that is needed for mission-critical databases, enterprise applications, and virtualized
environments.
The x3850 X6 packs numerous fault-tolerant and high-availability features into a high-density, 4U rack-
optimized lid-less package that helps reduce the space that is needed to support massive network
computing operations and simplify servicing. The x3850 X6 supports up to four Intel Xeon E7 high-
performance processors and up to 12 TB of memory.
Suggested use: mission-critical scalable databases, business analytics, virtualization, enterprise
applications, and cloud applications.
The following figure shows the Lenovo System x3850 X6.
Figure 1. Lenovo System x3850 X6, machine type 6241
Did you know?
The x3850 X6 server employs a lid-less design where all serviceable components are front- and rear-
accessible. In addition, each major subsystem is implemented as modular "book" design, such as the
Compute Books and I/O Books. This configuration means that components are easy to upgrade and
service, which translates to greater uptime of applications to your users. The x3850 X6 offers enterprise
scalability and advanced RAS features to support the most demanding mission-critical applications that
require 24x7 operations.
Lenovo System x3850 X6 (6241) 1

Key features
The increasing demand for cloud-computing and analytics workloads by enterprises to meet social,
mobile, and Big Data requirements drives innovation to find new ways to build informational systems.
Clients are looking for cost-optimized fit-for-purpose IT solutions that manage large amounts of data,
easily scale performance, and provide enterprise class reliability.
Built on decades of innovation, Lenovo introduces the sixth generation of Enterprise X-Architecture
technology, Lenovo X6 servers. Lenovo X6 servers are fast, agile, and resilient:
Fast application performance means immediate access to actionable information.
Agile system design helps to reduce acquisition costs and provide the ability to upgrade processor
and memory technology at each refresh within the same chassis.
Resilient platforms maximize application uptime and promote easy integration in virtual
environments.
Lenovo X6 servers continue to lead the way as the shift toward mission-critical scalable databases,
business analytics, virtualization, enterprise applications, and cloud-computing applications accelerates.
Fast application performance
The server offers numerous features to boost performance:
Based on the Intel Xeon E7 family of processors:
Models based on E7-4800 v4 and E7-8800 v4 processors
Supports up to four E7 v4 processors with a total of 96 cores and 192 threads to maximize
the concurrent running of multi-threaded applications.
Improves productivity by offering superior system performance with processors up to 24
cores, core frequencies up to 3.2 GHz core speeds, L3 cache of up to 60 MB, and three QPI
interconnect links at up to 9.6 GTps.
Supports DDR4 memory at speeds up to 1866 MHz, or DDR3 memory at speeds up to 1600 MHz
Supports up to 96 DIMM sockets, with 24 DIMMs per processor.
Intelligent and adaptive system performance with Intel Turbo Boost Technology 2.0 allows
processor cores to run at maximum speeds during peak workloads by temporarily going beyond
processor thermal design power (TDP).
Intel Hyper-Threading Technology boosts performance for multi-threaded applications by enabling
simultaneous multi-threading within each processor core, up to two threads per core.
Intel Virtualization Technology integrates hardware-level virtualization hooks that allow operating
system vendors to better use the hardware for virtualization workloads.
Intel Advanced Vector Extensions (AVX) improves floating-point performance for compute-intensive
technical and scientific applications.
Supports a 12 Gbps SAS RAID portfolio.
The usage of solid-state drives (SSDs) instead of, or along with, traditional spinning drives (HDDs)
can improve I/O performance. An SSD can support up to 100 times more I/O operations per second
(IOPS) than a typical HDD.
Optional support for high-performance PCIe-attached NVMe Flash Storage solid-state drives
(SSDs) can significantly improve I/O performance.
PCI Express 3.0 I/O adapter slots that improve the theoretical maximum bandwidth by almost
100% (8 GTps per link using 128b/130b encoding) compared to the previous generation of PCI
Express 2.0 (5 GTps per link using 8b/10b encoding).
With Intel Integrated I/O Technology, the PCI Express 3.0 controller is integrated into the Intel Xeon
processor. This integration helps reduce I/O latency and increase overall system performance.
Support for up to two graphics processing units (GPUs) and co-processors to maximize computing
Lenovo System x3850 X6 (6241) 2

power.
Energy-efficient electronic components help lower operational costs, including highly efficient 900
W AC and 1400 W AC power supplies with 80 PLUS Platinum certification.
The server is Energy Star 2.0 compliant
Agile system design
The server provides many scalability and flexibility features:
Innovative module "book" design for each of the three subsystems: Compute Books, Storage Book,
and I/O Books. Front and rear access means that you can easily scale the system by adding
components without removing the entire server from the rack.
The modular book design also allows clients to create the configuration that fits their application
and environment needs, which reduces acquisition costs while giving them the flexibility to grow
and modify their configuration later.
The book design also means that subsystem upgrades are simpler, quicker to perform, and have a
lower impact on the rest of the server.
Using 128 GB 3DS RDIMMs, the server supports up to 12 TB of memory.
Up to 16x 1.8-inch SSD bays, or up to eight 2.5-inch bays, provide a flexible and scalable all-in-one
platform to meet your increasing demands.
Offers up to 11 PCIe slots plus a dedicated Mezzanine LOM (ML2) adapter slot. Most slots are PCIe
3.0 to maximize I/O scalability.
PCIe slots are implemented in I/O Books to maximize modularity. Choose from Half-length I/O
Books or Full-length I/O Books, depending on the adapters that you need to deploy.
Most components are common between the four-socket x3850 X6 and eight-socket x3950 X6,
making for a simple upgrade path with minimal parts on the floor.
Resilient platform
The server provides many features to simplify serviceability and increase system uptime:
Upward Integration Modules for standard hypervisors enable the creation and management of
policies to maintain high availability of virtual machines and concurrent updating of the system
firmware, with no impact on application performance or availability.
Advanced Processor Recovery allows the system to automatically switch access and control of
networking, management, and storage in the event of a processor 1 failure, providing higher
availability and productivity.
Advanced Page Retire proactively protects applications from corrupted pages in memory, which is
crucial for scaling memory to terabytes.
Redundant bit steering, memory mirroring, and memory rank sparing for redundancy in the event of
a non-correctable memory failure.
Intel Execute Disable Bit functionality can help prevent certain classes of malicious buffer overflow
attacks when combined with a supported operating system.
Intel Trusted Execution Technology provides enhanced security through hardware-based resistance
to malicious software attacks, allowing an application to run in its own isolated space, which is
protected from all other software running on a system.
Redundant Intel Platform Controller Hub (PCH) connections to the processors allow the platform to
maintain access to networking, storage, and server management during a processor failure.
Hot-swap drives support RAID redundancy for data protection and greater system uptime.
Hot-swap I/O Books enabling you to install or replace adapters while the server is still running.
Tool-less lid-less design provides front and rear access for easy upgrades and serviceability. There
Lenovo System x3850 X6 (6241) 3

is no need to pull the server out of the rack to access internal components.
Hot-swap power supplies and hot-swap dual-motor redundant fans provide availability for mission-
critical applications.
An LCD diagnostics panel that is combined with individual light path diagnostic LEDs quickly lead
the technician to failed (or failing) components, which simplifies servicing, speeds up problem
resolution, and helps improve system availability.
Proactive Platform Alerts (including PFA and SMART alerts): Processors, voltage regulators,
memory, internal storage (SAS/SATA HDDs and SSDs, NVMe SSDs, flash storage adapters), fans,
power supplies, RAID controllers, and server ambient and sub-component temperatures. Alerts can
be surfaced through the system IMM to managers such as Lenovo XClarity Administrator, VMware
vCenter, and Microsoft System Center. These proactive alerts let you take appropriate actions in
advance of possible failure, thereby increasing server uptime and application availability.
Built-in Integrated Management Module Version II (IMM2) continuously monitors system
parameters, triggers alerts, and performs recovering actions in case of failures to minimize
downtime.
Includes a special Mezzanine LOM (ML2) adapter slot with support for adapters with either two 10
Gb ports or four 1 Gb ports. Supports direct connectivity to the IMM2 service processor for out-of-
band systems management.
Integrated industry-standard Unified Extensible Firmware Interface (UEFI) enables improved setup,
configuration, and updates, and simplifies error handling.
Integrated Trusted Platform Module (TPM) supporting TPM 2.0 and TPM 1.2 enables advanced
cryptographic functionality, such as digital signatures and remote attestation.
Industry-standard Advanced Encryption Standard (AES) NI support for faster and stronger
encryption.
Lenovo XClarity Administrator provides proactive systems management. It offers comprehensive
systems management tools that help increase uptime, reduce costs, and improve productivity
through advanced server management capabilities.
Solid-state drives (SSDs) offer better reliability than traditional mechanical HDDs for greater uptime.
Built-in diagnostic tests, using Dynamic Systems Analysis (DSA) Preboot, speed up troubleshooting
tasks to reduce service time.
Three-year customer-replaceable unit and onsite limited warranty, 9x5 next business day. Optional
service upgrades are available.
Locations of key components and connectors
Lenovo System x3850 X6 (6241) 4

Locations of key components and connectors
The following figure shows the front of the x3850 X6 server.
Figure 2. Front view of the Lenovo System x3850 X6
The following figure shows the rear of the x3850 X6 server.
Figure 3. Rear view of the Lenovo System x3850 X6
Lenovo System x3850 X6 (6241) 5

Standard specifications
The following table lists the standard specifications.
Table 1. Standard specifications
Components Specification
Machine type 6241
Firmware Lenovo-signed firmware
Form factor 4U rack.
Processor Models with E7 v4 processors: One, two or four Intel Xeon E7-4800 v4 or E7-8800 v4 processors,
each in a Compute Book. Processor options have between 4 and 24 cores with core frequencies
up to 3.2 GHz. Three QPI links up to 9.6 GT/s each. Compute Books have TruDDR4 memory up to
1866 MHz, but cannot be mixed. Up to 60 MB L3 cache. Intel C602J chipset.
Models with E7 v3 processors: One, two or four Intel Xeon E7-4800 v3 or E7-8800 v3 processors,
each in a Compute Book. Processor options between 4 cores (3.2 GHz) and 18 cores (up to 2.5
GHz). Three QPI links up to 9.6 GT/s each. Compute Books have either DDR3 memory up to 1600
MHz or TruDDR4 memory up to 1866 MHz, but cannot be mixed. Up to 45 MB L3 cache. Intel
C602J chipset.
Memory Up to 96 DIMM sockets (24 DIMMs per processor, installed in the Compute Book). RDIMMs and
LRDIMMs (Load Reduced DIMMs) are supported, but memory types cannot be intermixed.
Memory is either TruDDR4 memory (up to 1866 MHz) or DDR3 memory (up to 1600 MHz),
depending on the Compute Book selected. DDR3 memory and TruDDR4 memory cannot be
mixed in the same Compute Book. Compute Books with DDR3 memory and Compute Books with
TruDDR4 memory cannot be mixed in the same system.
Memory
maximums
Models with TruDDR4 Compute Books:
With RDIMMs: Up to 3 TB with 96x 32 GB RDIMMs and four processors
With LRDIMMs: Up to 6 TB with 96x 64 GB LRDIMMs and four processors
With 3DS RDIMMs: Up to 12 TB with 96x 128 GB RDIMMs and four processors
Models with DDR3 Compute Books:
With RDIMMs: Up to 1.5 TB with 96x 16 GB RDIMMs and four processors
With LRDIMMs: Up to 6 TB with 96x 64 GB LRDIMMs and four processors
Memory
protection
ECC, Chipkill, RBS, memory mirroring, and memory rank sparing.
Disk drive
bays
Up to 16 1.8" SSD bays, or up to 8 2.5" hot-swap SAS/SATA bays, or up to 4x 2.5” hot-swap PCIe
NVMe SSD drive bays.
Maximum
internal
storage
Up to 61.44 TB with 8x 7.68 TB 2.5-inch SAS SSDs or
Up to 16 TB with 8x 2 TB 2.5-inch NL SAS HDDs, or
Up to 16 TB with 4x 4 TB 2.5-inch PCIe NVMe SSDs.
RAID support 12 Gb SAS/SATA RAID 0, 1, or 10 with ServeRAID M5210; optional upgrades to RAID 5 and 50
are available (zero-cache; 1 GB non-backed cache; 1 GB or 2 GB flash-backed cache). Upgrades
to RAID 6 or 60 available for M5210 with 1 GB or 2 GB upgrades.
Optical and
tape bays
No internal bays. See http://support.lenovo.com/en/documents/pd011281 for external DVD
options.
Network
interfaces
Mezzanine LOM (ML2) slot for dual-port 10 GbE cards with SFP+ or RJ-45 connectors or quad-
port GbE cards with RJ-45 connectors. See the Ethernet column in the Standard models table.
Dedicated 1 GbE port for systems management.
Lenovo System x3850 X6 (6241) 6

PCI
Expansion
slots
Up to 11 PCIe slots plus dedicated Mezzanine LOM slot. The slots are as follows:
Two PCIe 3.0 x8 slots for internal RAID controllers (Storage Book)
Two PCIe 3.0 x16 slots (x16-wired), half length, full height (Primary I/O Book)
One PCIe 3.0 x16 (x8-wired), half length, full height (Primary I/O Book)
One ML2 slot for network adapter (PCIe 3.0 x8) (Primary I/O Book)
Two optional I/O Books, each with three slots, all full height (using these I/O Books
requires four processors). Optional books are hot-swap capable.
Optional I/O Books can be either of the following options:
Half-length I/O Book: Two PCIe 3.0 x8 slots, one PCIe 3.0 x16 slot.
Full-length I/O Book: Two PCIe 3.0 x16, one PCIe 2.0 x4 slot; two aux power connectors:
150 W and 75 W. Supports one double-wide GPU up to 300 W.
Ports Front: Two USB 3.0, one USB 2.0, and one DB-15 video ports. Rear: Four USB 2.0, one DB-15
video, one DB-9 serial, and one 1 GbE RJ-45 systems management. Internal: USB 2.0 port for
embedded hypervisor.
Cooling Calibrated Vectored Cooling™. Up to ten redundant hot-swap fan packs and five fan zones with
N+1 fan redundancy. Each fan pack includes two counter-rotated dual-motor fans.
Power supply Up to four redundant hot-swap 900 W AC or 1400 W AC power supplies (all 80 PLUS Platinum
certified). -48 V 750 W DC power supplies are available through CTO.
Hot-swap
parts
Drives, power supplies, fans, and optional I/O Books.
Video Matrox G200eR2 with 16 MB memory that is integrated into the IMM2. Maximum resolution is
1600 x 1200 at 75 Hz with 16 M colors.
Security
features
Power-on password, admin password, and an integrated Trusted Platform Module supporting
TPM 2.0 and TPM 1.2.
Systems
management
UEFI, Integrated Management Module II (IMM2) with remote presence feature, Predictive Failure
Analysis, Light Path Diagnostics, Automatic Server Restart, Lenovo XClarity Administrator, and
ServerGuide.
Operating
systems
Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware
ESXi. See the Operating system support section for specifics.
Limited
warranty
Three-year customer-replaceable unit (CRU) and onsite limited warranty with 9x5 next business
day (NBD).
Service and
support
Optional service upgrades are available through Lenovo Services offerings: 4-hour or 2-hour
response time, 8-hour fix time, 1-year or 2-year warranty extension, and remote technical support
for Lenovo hardware and some Lenovo / OEM applications.
Dimensions Height: 173 mm (6.8 in.), width: 482 mm (19.0 in.), depth: 804 mm (31.6 in), depth with cable
management brackets installed: 836 mm (32.9 in), depth with Full-length I/O Book installed: 921
mm (36.2 in)
Weight Minimum configuration: 35.9 kg (79.2 lb), typical: 46.4 kg (102.3 lb), maximum: 54.7 kg (120 lb)
Components Specification
The server is shipped with the following items:
Rail kit
Cable management brackets
2.8 m (9.18 ft) C13-C14 power cord (one for each power supply)
Documentation flyer and safety/warranty/installation information
Standard models
Lenovo System x3850 X6 (6241) 7

Standard models
This section lists the Standard and TopSeller models of the x3850 X6 server.
The following table lists the models with E7 v4 processors.
Table 2. Standard and TopSeller models with E7 v4 processors
Model†
Intel Xeon Processor*
(in a Compute Book) Memory RAID
Drive bays
Drives Ethernet‡
I/O
slots§
Power
supplies
x3850 X6 models with E7 v4 processors (TruDDR4 memory)
6241-14x 1x E7-4809 v4 8C
2.1GHz 20M 115W
2x 8GB
(1866MHz)¤
Optional Optional 4x 1 GbE 6 std
12 max
1x 900W
HS / 4
6241-24x** 2x E7-4820 v4 10C
2.0GHz 25M 115W
4x 16GB
(1866MHz)¤
1x M5210 4x 2.5" / 8
Open bay
4x 1 GbE 6 std
12 max
2x 900W
HS / 4
6241-44x** 2x E7-4850 v4 16C
2.1GHz 40M 115W
4x 16GB
(1866MHz)¤
1x M5210 4x 2.5" / 8
Open bay
4x 1 GbE 6 std
12 max
2x 900W
HS / 4
6241-54x** 2x E7-8860 v4 18C
2.2GHz 45M 140W
4x 16GB
(1866MHz)¤
1x M5210 4x 2.5" / 8
Open bay
4x 1 GbE 6 std
12 max
2x 900W
HS / 4
6241-94x** 2x E7-8890 v4 24C
2.2GHz 60M 165W
4x 16GB
(1866MHz)¤
1x M5210 4x 2.5" / 8
Open bay
4x 1 GbE 6 std
12 max
2x 900W
HS / 4
x3850 X6 TopSeller models with E7 v4 processors (TruDDR4 memory) - North America only
6241-E1U 2x E7-4820 v4 10C
2.0GHz 25M 115W
4x 16GB
(1866MHz)¤
1x M5210 4x 2.5" / 8
Open bay
4x 1 GbE 6 std
12 max
2x 900W
HS / 4
6241-E2U 2x E7-4850 v4 16C
2.1GHz 40M 115W
4x 16GB
(1866MHz)¤
1x M5210 4x 2.5" / 8
Open bay
4x 1 GbE 6 std
12 max
2x 900W
HS / 4
6241-E3U 2x E7-8890 v4 24C
2.2GHz 60M 165W
4x 16GB
(1866MHz)¤
1x M5210 4x 2.5" / 8
Open bay
4x 1 GbE 6 std
12 max
2x 900W
HS / 4
† x in the Machine Type Model (MTM) represents a country-specific letter (for example, the EMEA MTM is
6241-A4G, and the US MTM is 6241-A4U). Ask a Lenovo representative for specifics.
* Processor detail: Processor quantity and model, cores, core speed, L3 cache, and TDP.
¤ The DIMMs in these models operate at the speed indicated to match the memory bus speed of the
processor
‡ Model F3x, F4x, B3x include the Broadcom NetXtreme II ML2 Dual Port 10GbE SFP+ adapter
(BCM57810S based). All other models include Intel I350-T4 ML2 Quad Port GbE Adapter (I350-AM4
based).
§ Models with six slots have the Primary I/O Book (four slots) and Storage Book (two slots) standard.
** Models 24x, 44x, 54x and 94x not available in North America.
Models with E7 v3 processors : All models with E7 v3 processors are now withdrawn from marketing.
Compute Books with E7 v3 are still available for existing customers. See the Processor options
section.
Lenovo System x3850 X6 (6241) 8

SAP HANA Workload Optimized models
The Lenovo System x3850 X6 Workload Optimized Solutions for SAP HANA provide optimal solutions for
SAP NetWeaver Business Warehouse, data mart, and SAP Business Suite, Powered by SAP HANA
applications. Preconfigured workload optimized server models for SAP HANA applications are configured
with up to 1 TB of memory and are upgradeable to support larger single node and scale-out cluster
implementations.
Note: For CTO configurations of SAP HANA models, select base model 6241-AC3
The following table lists the Workload Optimized Solution models for SAP HANA with E7 v4 processors
Table 3. Workload Optimized Solution models for SAP HANA with E7 v4 processors
Model
Intel Xeon
(Compute Book) Memory RAID
Drive bays
Drives Ethernet
I/O
slots
Power
supplies
SAP HANA models with E7 v4 processors and TruDDR4 memory - Standard models
6241-
8Ax
2x E7-8880 v4
22C 2.2GHz
55M 150W
128 GB
16x 8GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5" bays
6x 1.2 TB SAS HDD
2x 400 GB S3710 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
6241-
8Bx
2x E7-8880 v4
22C 2.2GHz
55M 150W
256 GB
16x 16GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5" bays
6x 1.2 TB SAS HDD
2x 400 GB S3710 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
6241-
8Cx
2x E7-8880 v4
22C 2.2GHz
55M 150W
512 GB
16x 32GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5" bays
6x 1.2 TB SAS HDD
2x 400 GB S3710 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
6241-
8Dx
4x E7-8880 v4
22C 2.2GHz
55M 150W
512 GB
32x 16GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5" bays
6x 1.2 TB SAS HDD
2x 400 GB S3710 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
12 std
12 max
4x 1400W
HS / 4
6241-
8Fx
4x E7-8880 v4
22C 2.2GHz
55M 150W
1024 GB
32x 32GB
DDR4 RDIMM
1x M5210
+ upgrades*
+ 1x M5225
+ upgrades*
8x 2.5" bays
6x 1.2 TB SAS HDD
2x 400 GB S3710 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
12 std
12 max
4x 1400W
HS / 4
SAP HANA models with E7 v4 processors and TruDDR4 memory - TopSeller models (North America only)
6241-
EKU
2x E7-8880 v4
22C 2.2GHz
55M 150W
256 GB
16x 16GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5" bays
6x 1.2 TB SAS HDD
2x 400 GB S3710 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
* See the list of specific components below
The following table lists the Workload Optimized Solution models for SAP HANA with E7 v3 processors
Table 4. Workload Optimized Solution models for SAP HANA with E7 v3 processors
Model
Intel Xeon
(Compute Book) Memory RAID
Drive bays
Drives Ethernet
I/O
slots
Power
supplies
SAP HANA models with E7 v3 processors and TruDDR4 memory - Standard models
6241-
HQx
4x E7-8880 v3
18C 2.3GHz
45MB 150W
1024 GB
32x 32GB
DDR4 RDIMM
1x M5210
+ upgrades*
1x M5120
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
12 std
12 max
4x 1400W
HS / 4
6241-
HRx
4x E7-8880 v3
18C 2.3GHz
45MB 150W
512 GB
32x 16GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
12 std
12 max
4x 1400W
HS / 4
6241-
HSx
2x E7-8880 v3
18C 2.3GHz
45MB 150W
512 GB
16x 32GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
Lenovo System x3850 X6 (6241) 9

6241-
HTx
2x E7-8880 v3
18C 2.3GHz
45MB 150W
256 GB
16x 16GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
6241-
HUx
2x E7-8880 v3
18C 2.3GHz
45MB 150W
128 GB
16x 8GB
DDR4 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
SAP HANA models with E7 v3 processors and DDR3 memory - Standard models
6241-
HVx
4x E7-8880 v3
18C 2.3GHz
45MB 150W
1024 GB
32x 32 GB
DDR3 LRDIMM
1x M5210
+ upgrades*
1x M5120
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
12 std
12 max
4x 1400W
HS / 4
6241-
HWx
4x E7-8880 v3
18C 2.3GHz
45MB 150W
512 GB
32x 16 GB
DDR3 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
12 std
12 max
4x 1400W
HS / 4
6241-
HXx
2x E7-8880 v3
18C 2.3GHz
45MB 150W
512 GB
16x 32 GB
DDR3 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
6241-
HYx
2x E7-8880 v3
18C 2.3GHz
45MB 150W
256 GB
16x 16 GB
DDR3 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
6241-
HZx
2x E7-8880 v3
18C 2.3GHz
45MB 150W
128 GB
16x 8 GB
DDR3 RDIMM
1x M5210
+ upgrades*
8x 2.5” HS
6x 1.2 TB SAS HDD
2x 400 GB S3700 SSD
1x 4x1GbE ML2
2x Mellanox 10Gb*
6 std
12 max
4x 1400W
HS / 4
Model
Intel Xeon
(Compute Book) Memory RAID
Drive bays
Drives Ethernet
I/O
slots
Power
supplies
* See the list of specific components below
Each of these HANA models include the following components
ServeRAID M5210 controller (46C9110) with 2GB cache upgrade with flash backup (47C8664), plus
Performance Accelerator (47C8710) and SSD Caching Enabler (47C8712)
Models HQx, HVx: ServeRAID M5120 RAID controller for external connectivity (81Y4478), with 1GB
cache upgrade with flash backup (47C8660) plus Performance Accelerator (47C8710) and SSD
Caching Enabler (47C8712).
Model 8Fx: ServeRAID M5225-2GB RAID controller for external connectivity (00AE938) plus
Performance Accelerator (47C8710) and SSD Caching Enabler (47C8712).
Six 1.2TB 10K 6Gbps SAS 2.5" G3HS HDD (00AJ146)
Models with E7 v4 processors: Two Intel S3710 400GB Enterprise Performance SATA G3HS 2.5"
SSDs (00YC325)
Models with E7 v3 processors: Two S3700 400GB SATA 2.5" MLC G3HS Enterprise SSDs
(00AJ161)
One Intel I350-T4 ML2 Quad Port GbE Adapter (00D1998)
Models with E7 v4 processors: Two Mellanox ConnectX-3 10 GbE Adapters (00D9690) plus four
SFP+ SR Transceivers (46C3447)
Models with E7 v3 processors: Two Mellanox ConnectX-3 40GbE / FDR IB VPI Adapters (00D9550)
plus four Mellanox QSA Adapters (QSFP to SFP+) (90Y3842) and four SFP+ SR Transceivers
(46C3447)
Models with 12 standard slots: Two X6 Half-length I/O Books (44X4049)
Lenovo solution for SAP HANA media
Lenovo System x3850 X6 (6241) 10

Note: The operating system software is not included with the SAP HANA models. Operating system
selection must be a separate line item included in order: SLES for SAP with standard or priority support.
The SAP HANA Software is included, but the license is sold separately by SAP or an SAP business
partner. VMware Enterprise Plus license sold separately. IBM Spectrum Scale (GPFS) is available from
Lenovo separately.
For more information about the standard features of the server, see the Standard specifications section.
Upgrading Compute Books
With the x3850 X6, machine type 6241, Lenovo supports upgrading the server processors by simply by
replacing the Compute Books. The process to upgrade is made very simple because of the innovative
book design of the x3850 X6.
Supported upgrades are:
E7 v2 processors to E7 v3 processors with DDR3 DIMMs (optionally keep existing memory)
E7 v2 processors to E7 v3 processors with DDR4 DIMMs (new DDR4 DIMMs required)
E7 v2 processors to E7 v4 processors (new DDR4 DIMMs required)
E7 v3 processors with DDR3 to E7 v4 processors (new DDR4 DIMMs required)
E7 v3 processors with DDR4 to E7 v4 processors (optionally keep existing memory)
Notes:
Upgrades to E7 v3 and v4 processors are only supported with machine type 6241. If you want to
upgrade an X6 server with machine type 3837, contact your local representative.
eXFlash DIMMs (now withdrawn) are not supported with TruDDR4 memory; Only DDR3 memory is
supported
Intel Xeon E7 v3 and v4 processors require minimum firmware levels. Consult the documentation
that is included with the Compute Books.
Compute books with E7 v4 processors do not support DDR3 memory
If you upgrade from E7 v3 processors with DDR4 to E7 v4 processors, you can transfer the 2133
MHz DDR4 memory DIMMs to the new compute books. If you also want to add additional memory
to the E7 v4 compute book, it is supported to use either 2133 MHz or 2400 MHz DDR4 memory
DIMMs. It is supported to mix 2133 MHz and 2400 MHz DIMMs in the same compute book.
If you plan to use your existing DDR3 memory to upgrade to a Compute Books with v3 processors
(Compute Books with v4 processors do not support DDR3 memory), the process to upgrade is as follows:
1. Purchase Compute Books to replace the existing Compute Books
2. Check and if necessary, upgrade all firmware to at least the minimum levels needed to support the
new processors
3. Power off the server and remove the existing Compute Books
4. Transfer all DDR3 memory DIMMs to the new Compute Books
5. Reinstall the new Compute Books
If you plan to upgrade to TruDDR4 memory, then you should also order the appropriate memory DIMMs to
match your workload requirements. TruDDR4 DIMMs used in E7 v3 compute books can be used in E7 v4
compute books.
Upgrading to an 8-socket system
The x3850 X6 server has a flexible modular design that allows you to increase the server’s compute power
and I/O capabilities by adding additional Compute Books and I/O Books. The modular design also means
that if your business needs additional processing or I/O capability within the same system image, then it is
possible to migrate to an eight-socket x3950 X6.
Lenovo System x3850 X6 (6241) 11

Lenovo supports upgrading a 4-socket X6 server to an 8-socket X6 server. The two recommended
methods are as follows:
Start with a 4-socket x3950 X6 (8U chassis) and add additional processors when needed
Start with a 4-socket x3850 X6 (4U chassis) and upgrade it when needed using an RPQ process
Option 1: Start with a 4-socket x3950 X6
With this option, you plan for the need for future 8-socket performance in advance and purchase an x3950
X6 with only four Compute Books installed. The initial order would contain:
Four Compute Books with E7-8800 v3 or v4 series processors (not E7-4800 processors)
Four Power Supplies (preferably 1400W)
Two Primary IO Book standard
Two Storage Book Standard
Once the need arises to upgrade the server to six or eight processors, simply purchase more Compute
Books with the same processor model, plus additional power supplies (as determined by using the Power
Configurator), I/O Books, adapters and drives as needed.
For information about the x3950 X6, see the Lenovo System x3950 X6 Product Guide:
http://lenovopress.com/tips1251
Note: It is supported to install E7-4800-based Compute Books in a x3950 X6 from either an System x3850
X6 (machine type 3837) or a Lenovo System x3850 X6 (machine type 6241)
Option 2: Upgrade your 4-socket x3850 X6 using an RPQ
With this option, you don’t have to plan for 8-socket capacity up front. You start with an x3850 X6 then
when you are ready to upgrade to a 6-socket or 8-socket server, you purchase an upgrade offering via an
RPQ.
As part of the RPQ, a service engineer comes onsite with the new mechanical chassis and performs the
field upgrade by transferring all components to the new chassis. This method also requires the x3850 X6
compute books be the same E7-8800 series processors as ordered for the RPQ, however, in this scenario,
the server maintain the original serial number.
Note: Use of E7-4800 processors: Intel Xeon E7-4800 v2/v3/v4 processors cannot be used in an x3950
X6. If your x3850 X6 has Compute Books with E7-4800 processors, then these must be replaced with
Compute Books with E7-8800 processors if you plan to upgrade to an x3950 X6. The memory in the
Compute Books can be reused in the x3950 X6, however (provided the selected processors support the
memory type, DDR3 or DDR4).
For this method, submit an RPQ for assessment and pricing. The existing x3850 X6 configuration will be
evaluated and recommendations will be made based on the workload requirements.
The major parts of the 4U to 8U upgrade are the 8U chassis, the Storage Book and the Primary I/O Book.
All the components in the package will be installed in the top portion of the chassis. The 4U system's
components will be transferred to the bottom section of the chassis.
Even though this upgrade requires a new 8U chassis replacing the existing 4U chassis, the majority of
internal components can be moved from the x3850 X6 to the x3950 X6.
The x3850 X6 components that can be migrated to the x3950 X6 as part of the RPQ upgrade are:
Compute Books, provided they use Intel Xeon E7-8800 processors
All memory DIMMs
Storage Book
All internal drives
Primary I/O Book (and associated fans)
Half-length I/O Books
Full-length I/O Books
Lenovo System x3850 X6 (6241) 12

All adapters
All power supplies
The RPQ upgrade includes these parts:
New 8U chassis and 8-socket midplane
A second Storage Book
A second Primary I/O Book
The RPQ upgrade may also require new parts:
Additional Compute Books (a minimum of four Compute Books required in the x3950 X6)
Additional power supplies (a minimum of four are required in the x3950 X6)
Additional I/O Books, network adapters, drives as needed
There are key considerations for this upgrade:
Processor support: Intel Xeon E7-4800 v2/v3/v4 processors cannot be used in an x3950 X6. If your
x3850 X6 has Compute Books with E7-4800 processors, then these must be replaced with
Compute Books with E7-8800 processors if you plan to upgrade to an x3950 X6. The memory in the
Compute Books can be reused in the x3950 X6, however.
All processors must be identical: All processors used in the x3950 X6 must be the identical. For
example, all E7-8850 v3 processors. A minimum of four processors are required.
The upgrade does result in some parts no longer being used (“parts on the floor”):
Existing 4U chassis and 4-socket midplane
Compute Books that are based on E7-4800 processors
Original x3850 X6 server may need to be ordered configure-to-order (CTO) or Special Bid: To
minimize “parts on the floor” (parts that cannot be used in the upgraded system), the original x3850
X6 should be configured with Compute Books containing E7-8800 processors. Since many
standard models of the x3850 X6 (see Table 2) contain E7-4800 processors, you may need to use
configure-to-order or order the server using Special Bid to create a server configuration with E7-
8800 processors.
Serial number swap: The RPQ upgrade process also involves transferring the x3850 X6 serial
number to the x3950 X6 chassis. This transfer makes the upgrade simpler from an asset or
depreciation management point of view. This transfer also means that the old 4U chassis will be
retired as it will no longer have a valid serial number.
Power supplies: Ideally all power supplies are the 1400W variant. Regardless of the selection, the
power supplies coexistence rules as described in the Power supplies section must be followed.
Additional power: Depending on your workload and configuration you may need to provision for
additional PDU outlets, cables and power capacity for your x3950 X6 server. Use the Lenovo Power
Configurator to determine your total power draw to assist you in provisioning adequate power. You
can download the Power Configurator from https://support.lenovo.com/documents/LNVO-
PWRCONF
Additional rack space: An additional 4U of rack space is required when upgrading the x3850 X6 to
the x3950 X6, for a total of 8U of rack space.
Down time: In order to upgrade the x3850 X6 server to an x3950 X6 server you will need to allow for
down time. The server will need to be completely powered off and have some of its components
removed for re-installation into the new x3950 X6 server.
Processor options
The x3850 X6 supports up to four Intel Xeon E7 processors, either E7 v4 or E7 v3. Processors are installed
in Compute Books, one processor in each Compute Book. The following figure shows the components of
the Compute Book:
Lenovo System x3850 X6 (6241) 13

One processor
A total of 24 DIMM slots, 12 on each side of the book
Two hot-swap dual-motor fans that are mounted on the front of the book
The x3850 X6 supports two or four Compute Books. Three Compute Books are not supported. A
configuration of one Compute Book is only supported in standard models 6241-A4x and 6241-D5x.
Each Compute Book is installed in the front of the server, as shown in the following figure.
Figure 4. Compute Book
The following table shows the processor options, grouped as follows:
E7-4800 v4 processors in Compute Books with TruDDR4 support
E7-8800 v4 processors in Compute Books with TruDDR4 support
E7-4800 v3 processors in Compute Books with DDR3 support
E7-8800 v3 processors in Compute Books with DDR3 support
E7-4800 v3 processors in Compute Books with TruDDR4 support
E7-8800 v3 processors in Compute Books with TruDDR4 support
Each option includes the processor installed in a Compute Book. Compute Books with one of the E7-4800
family of processors are supported only in a four-socket x3850 X6 server and cannot be used in an x3950
X6 server. All Compute Books installed in a server must be identical.
The table also shows the maximum memory bus speed each processor supports plus which server models
have each processor standard. If there is no corresponding where-used model for a particular processor,
this processor is only available through CTO.
Table 5. Compute book options (HT = Hyper Threading, TB = Turbo Boost 2.0)
Part number
Feature codes‡
Description
(processor installed in
a Compute Book)
L3
cache
QPI
speed
Memory
support
Memory bus
speed (RAS /
Performance)† HT TB
Models
where
used
Intel Xeon E7-4800 v4 processors (not supported in the x3950 X6)
Lenovo System x3850 X6 (6241) 14

00WH302
ATX1 / ATXR
X6 Compute Book E7-4809 v4
8C 2.1GHz 20M 115W
20 MB 6.4 GHz TruDDR4 1866 MHz /
1333 MHz
Y N 14x
00WH306
ATX2 / ATXS
X6 Compute Book E7-4820 v4
10C 2.0GHz 25M 115W
25 MB 6.4 GHz TruDDR4 1866 MHz /
1333 MHz
Y N 24x, E1U
00WH310
ATX3 / ATXT
X6 Compute Book E7-4830 v4
14C 2.0GHz 35M 115W
35 MB 8 GHz TruDDR4 1866 MHz /
1333 MHz
Y Y -
00WH314
ATX4 / ATXU
X6 Compute Book E7-4850 v4
16C 2.1GHz 40M 115W
40 MB 8 GHz TruDDR4 1866 MHz /
1333 MHz
Y Y 44x, E2U
Intel Xeon E7-8800 v4 processors (also supported in the x3950 X6)
00KH384
ATWZ / ATYF
X6 Compute Book E7-8855 v4
14C 2.1GHz 35M 140W
35 MB 8 GHz TruDDR4 1866 MHz /
1333 MHz
Y Y -
00WH322
ATX6 / ATXW
X6 Compute Book E7-8860 v4
18C 2.2GHz 45M 140W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y 54x
00WH318
ATX5 / ATXV
X6 Compute Book E7-8867 v4
18C 2.4GHz 45M 165W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00WH326
ATX7 / ATXX
X6 Compute Book E7-8870 v4
20C 2.1GHz 50M 140W
50 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00WH330
ATX8 / ATXY
X6 Compute Book E7-8880 v4
22C 2.2GHz 55M 150W
55 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y HANA
models
00WH334
ATX9 / ATXZ
X6 Compute Book E7-8890 v4
24C 2.2GHz 60M 165W
60 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y 94x, E3U
00WH342
ATXB / ATY1
X6 Compute Book E7-8891 v4
10C 2.8GHz 60M 165W
60 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00WH346
ATXC / ATY2
X6 Compute Book E7-8893 v4
4C 3.2GHz 60M 140W
60 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00YG935
AVR6 / AVR7
X6 Compute Book E7-8894 v4
24C 2.4GHz 60M 165W
60 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
Intel Xeon E7-4800 v3 processors with support for DDR3 memory (not supported in the x3950 X6)
00ML902
AS7T / AS8H
X6 DDR3 Compute Book
E7-4809 v3 8C 2.0GHz 115W
20 MB 6.4 GHz DDR3 1333 MHz /
1333 MHz
Y N D4x
00ML906
AS7U / AS8J
X6 DDR3 Compute Book
E7-4820 v3 10C 1.9GHz 115W
25 MB 6.4 GHz DDR3 1333 MHz /
1333 MHz
Y N F1x
00ML910
AS7V / AS8K
X6 DDR3 Compute Book
E7-4830 v3 12C 2.1GHz 115W
30 MB 8 GHz DDR3 1600 MHz /
1333 MHz
Y Y -
00ML914
AS7W / AS8L
X6 DDR3 Compute Book
E7-4850 v3 14C 2.2GHz 115W
35 MB 8 GHz DDR3 1600 MHz /
1333 MHz
Y Y F3x
Intel Xeon E7-8800 v3 processors with support for DDR3 memory (also supported in the x3950 X6)
00ML922
AS7X / AS8M
X6 DDR3 Compute Book
E7-8860 v3 16C 2.2GHz 140W
40 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y N G1x
00FP692
AS7R / AS8F
X6 DDR3 Compute Book
E7-8867 v3 16C 2.5GHz 165W
45 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y N -
00ML926
AS7Y / AS8N
X6 DDR3 Compute Book
E7-8870 v3 18C 2.1GHz 140W
45 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y Y -
00ML930
AS7Z / AS8P
X6 DDR3 Compute Book
E7-8880 v3 18C 2.3GHz 150W
45 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y Y HANA
models
00ML938
AS81 / AS8R
X6 DDR3 Compute Book
E7-8880L v3 18C 2.0GHz 115W
45 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y Y -
00ML934
AS80 / AS8Q
X6 DDR3 Compute Book
E7-8890 v3 18C 2.5GHz 165W
45 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y Y G3x
00ML942
AS82 / AS8S
X6 DDR3 Compute Book
E7-8891 v3 10C 2.8GHz 165W
45 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y Y -
Part number
Feature codes‡
Description
(processor installed in
a Compute Book)
L3
cache
QPI
speed
Memory
support
Memory bus
speed (RAS /
Performance)† HT TB
Models
where
used
Lenovo System x3850 X6 (6241) 15

00ML946
AS83 / AS8T
X6 DDR3 Compute Book
E7-8893 v3 4C 3.2GHz 140W
45 MB 9.6 GHz DDR3 1600 MHz /
1600 MHz
Y Y -
Intel Xeon E7-4800 v3 processors with support for TruDDR4 memory (not supported in the x3950 X6)
00ML950
AS84 / AS8U
X6 DDR4 Compute Book
E7-4809 v3 8C 2.0GHz 115W
20 MB 6.4 GHz TruDDR4 1866 MHz /
1333 MHz
Y N D5x
00ML954
AS85 / AS8V
X6 DDR4 Compute Book
E7-4820 v3 10C 1.9GHz 115W
25 MB 6.4 GHz TruDDR4 1866 MHz /
1333 MHz
Y N F2x
00ML958
AS86 / AS8W
X6 DDR4 Compute Book
E7-4830 v3 12C 2.1GHz 115W
30 MB 8 GHz TruDDR4 1866 MHz /
1333 MHz
Y Y -
00ML962
AS87 / AS8X
X6 DDR4 Compute Book
E7-4850 v3 14C 2.2GHz 115W
35 MB 8 GHz TruDDR4 1866 MHz /
1333 MHz
Y Y F4x
Intel Xeon E7-8800 v3 processors with support for TruDDR4 memory (also supported in the x3950 X6)
00ML970
AS88 / AS8Y
X6 DDR4 Compute Book
E7-8860 v3 16C 2.2GHz 140W
40 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y G2x
00FP696
AS7S / AS8G
X6 DDR4 Compute Book
E7-8867 v3 16C 2.5GHz 165W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00ML974
AS89 / AS8Z
X6 DDR4 Compute Book
E7-8870 v3 18C 2.1GHz 140W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00ML978
AS8A / AS90
X6 DDR4 Compute Book
E7-8880 v3 18C 2.3GHz 150W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1866 MHz
Y Y HANA
models
00ML986
AS8C / AS92
X6 DDR4 Compute Book
E7-8880L v3 18C 2.0GHz 115
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00ML982
AS8B / AS91
X6 DDR4 Compute Book
E7-8890 v3 18C 2.5GHz 165W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y G4x
00ML990
AS8D / AS93
X6 DDR4 Compute Book
E7-8891 v3 10C 2.8GHz 165W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
00ML994
AS8E / AS94
X6 DDR4 Compute Book
E7-8893 v3 4C 3.2GHz 140W
45 MB 9.6 GHz TruDDR4 1866 MHz /
1600 MHz
Y Y -
Part number
Feature codes‡
Description
(processor installed in
a Compute Book)
L3
cache
QPI
speed
Memory
support
Memory bus
speed (RAS /
Performance)† HT TB
Models
where
used
‡ The first feature code is for the first Compute Book. The second feature code is for all additional
Compute Books
† The processors support two memory modes, RAS mode (also known as lockstep mode) and
Performance mode (also known as independent mode). In Performance mode, the SMI2 link operates at
twice the memory bus speed shown .
Lenovo System x3850 X6 (6241) 16

Memory options
The x3850 X6 (6241) supports either DDR3 or TruDDR4 memory, depending on the Compute Books used
in the server.
Lenovo TruDDR4 Memory uses the highest quality components that are sourced from Tier 1 DRAM
suppliers and only memory that meets the strict requirements of Lenovo is selected. It is compatibility
tested and tuned to maximize performance and reliability. TruDDR4 Memory has a unique signature that is
programmed into the DIMM that enables System x® servers to verify whether the memory that is installed
is qualified or supported by Lenovo. Because TruDDR4 Memory is authenticated, certain extended
memory performance features can be enabled to extend performance over industry standards.
Lenovo DDR3 memory is compatibility tested and tuned for optimal System x performance and
throughput. Lenovo memory specifications are integrated into the light path diagnostics for immediate
system performance feedback and optimum system uptime.
From a service and support standpoint, Lenovo TruDDR4 and DDR3 memory automatically assumes the
system warranty, and Lenovo provides service and support worldwide.
The x3850 X6 supports TruDDR4 memory operating at speeds up to 1866 MHz and DDR3 memory at
speeds up to 1600 MHz. Note that even though supported TruDDR4 DIMMs are rated at 2400 MHz or
2133 MHz, when used in the x3850 X6, they operate at speeds up to 1866 MHz.
The x3850 X6 supports up to 96 DIMMs when all processors are installed, 24 DIMMs per processor. Each
processor has four memory channels that are implemented using Scalable Memory Interface generation 2
(SMI2) chips, and the server implements three DIMMs per channel. The processor and the corresponding
memory DIMM slots are on the Compute Book.
The following table lists the memory options that are available for x3850 X6.
Table 6. Memory options
Part
number
Feature
code Description
Maximum
supported
Models
where used
2400 MHz TruDDR4 RDIMMs and LRDIMMs (for use with E7 v4 processors)
46W0821 ATC8 8GB TruDDR4 Memory (1Rx4, 1.2V)
PC4-19200 CL17 2400MHz LP RDIMM
96 (24 per CPU) 14x
46W0829 ATCA 16GB TruDDR4 Memory (2Rx4, 1.2V)
PC4-19200 CL17 2400MHz LP RDIMM
96 (24 per CPU) All other v4 models
46W0833 ATCB 32GB TruDDR4 Memory (2Rx4, 1.2V)
PC4-19200 CL17 2400MHz LP RDIMM
96 (24 per CPU) 8Cx, 8Fx, 8Hx, 8Jx
46W0841 ATGG 64GB TruDDR4 Memory (4Rx4, 1.2V)
PC4-19200 CL17 2400MHz LP LRDIMM
96 (24 per CPU) -
00YG941 B0MV 128GB TruDDR4 Memory (8Rx4 1.2V)
PC4-2400-R 2400MHz 3DS RDIMM
96 (24 per CPU) -
2133 MHz TruDDR4 RDIMMs and LRDIMMs (for use with E7 v3 processors, also supported with E7 v4;
00KH391 only supported on certain E7 v3 processors)
46W0788 A5B5 8GB TruDDR4 Memory (1Rx4, 1.2V)
PC4-17000 CL15 2133MHz LP RDIMM
96 (24 per CPU) D5x
46W0796 A5B7 16GB TruDDR4 Memory (2Rx4, 1.2V)
PC4-17000 CL15 2133MHz LP RDIMM
96 (24 per CPU) F2x, F4x, G2x,
G4x
95Y4808 A5UJ 32GB TruDDR4 Memory (2Rx4, 1.2V)
PC4-17000 CL15 2133MHz LP RDIMM
96 (24 per CPU) -
00KH391† AUF3 32GB TruDDR4 Memory (4Rx4, 1.2V)
PC4-17000 CL15 2133MHz LP LRDIMM
96 (24 per CPU) -
Lenovo System x3850 X6 (6241) 17

95Y4812 A5UK 64GB TruDDR4 Memory (4Rx4,1.2V)
PC4-17000 CL15 2133MHz LP LRDIMM
96 (24 per CPU) -
DDR3 RDIMMs and LRDIMMs (for use with E7 v2 and v3 processors, except for 00D5024)
00D5024** A3QE 4GB (1x4GB, 1Rx4, 1.35V) PC3L-12800
CL11 ECC DDR3 1600MHz LP RDIMM
96 (24 per CPU) -
46W0741* A451 64GB (1x64GB, 8Rx4, 1.35V) PC3-10600
DDR3 1333MHz LP LRDIMM
96 (24 per CPU) -
Part
number
Feature
code Description
Maximum
supported
Models
where used
* Withdrawn from marketing
** 00D5024 is supported only in Compute Books with E7 v2 processors
† 00KH391 is supported only in Compute Books with E7-8880 v3 or E7-8890 v3 processors; no other
memory DIMM is supported if 00KH391 is installed
The following rules apply when selecting the memory configuration:
The server supports RDIMMs and LRDIMMs.
DDR4 Compute Books support mixing 2133 MHz and 2400 MHz DDR4 memory.
Mixing different types of memory (combinations of RDIMMs, LRDIMMs, and 3DS RDIMMs) is not
supported.
Mixing different generations of memory (DDR3 and TruDDR4) is not supported
The maximum number of ranks per one memory channel is six with RDIMMs, 12 with LRDIMMs, or
24 with 3DS RDIMMs.
In RAS (lockstep) mode, DIMMs must be installed in a pair.
The maximum quantity of DIMMs that can be installed in the server depends on the number of
processors, DIMM type, rank, and operating voltage, as shown in the "Maximum qty supported"
row in the following table.
All DIMMs in the server operate at the same speed, which is determined as the lowest value of one
of the following options:
Memory speed that is supported by the specific processor.
Lowest of maximum operating speeds for selected memory configuration that depends on
rated speed, operating voltage, and quantity of DIMMs per channel, as shown under
"Maximum operating speed" section in the following table.
The following tables show the characteristics of the supported DIMMs. Table cells that are highlighted
with a gray background indicate that the server supports higher memory frequencies or larger memory
capacity (or both) than the Intel processor specification defines.
Memory speed: In performance mode, memory channels operate independently, and the SMI2 link
operates at twice the DDR3 speed. In RAS mode, two channels operate synchronously, and the SMI2 link
operates at the DDR3 speed.
Lenovo System x3850 X6 (6241) 18

Table 7. Maximum memory speeds - 2400 MHz TruDDR4 memory
Specification RDIMMs LRDIMMs 3DS RDIMMs
Rank Single rank Dual rank Quad rank Octo rank
Part numbers 46W0821 (8 GB) 46W0829 (16 GB)
46W0833 (32 GB)
46W0841 (64 GB) 00YG941 (128 GB)
Rated speed 2400 MHz 2400 MHz 2400 MHz 2400 MHz
Rated voltage 1.2 V 1.2 V 1.2 V 1.2 V
Operating voltage 1.2 V 1.2 V 1.2 V 1.2 V
Maximum quantity* 96 96 96 96
Largest DIMM 8 GB 32 GB 64 GB 128 GB
Max memory capacity 0.75 TB 3 TB 6 TB 12 TB
Maximum operating speed - Performance mode (2:1 mode - SMI2 link operates at twice the speed shown)
1 DIMM per channel 1600 MHz 1600 MHz 1600 MHz 1600 MHz
2 DIMMs per channel 1600 MHz 1600 MHz 1600 MHz 1600 MHz
3 DIMMs per channel 1600 MHz 1600 MHz† 1600 MHz 1600 MHz
Maximum operating speed - RAS mode (1:1 mode - SMI2 link operates at the speed shown)
1 DIMM per channel 1866 MHz 1866 MHz 1866 MHz 1866 MHz
2 DIMMs per channel 1866 MHz 1866 MHz 1866 MHz 1866 MHz
3 DIMMs per channel 1600 MHz 1600 MHz† 1600 MHz 1600 MHz
* Maximum quantity supported is shown for all processors that are installed
† This speed is above the Intel standard and is achieved only when Lenovo TruDDR4 memory is used
Table 8. Maximum memory speeds - 2133 MHz TruDDR4 memory
Specification TruDDR4 RDIMMs TruDDR4 LRDIMMs
Rank Single rank Dual rank Quad rank
Part numbers 46W0788 (8 GB) 46W0796 (16 GB)
95Y4808 (32 GB)
95Y4812 (64 GB)
Rated speed 2133 MHz 2133 MHz 2133 MHz
Rated voltage 1.2 V 1.2 V 1.2 V
Operating voltage 1.2 V 1.2 V 1.2 V
Maximum quantity* 96 96 96
Largest DIMM 8 GB 32 GB 64 GB
Max memory capacity 0.75 TB 3.0 TB 6 TB
Maximum operating speed - Performance mode (2:1 mode - SMI2 link operates at twice the speed shown)
1 DIMM per channel 1600 MHz 1600 MHz 1600 MHz
2 DIMMs per channel 1600 MHz 1600 MHz 1600 MHz
3 DIMMs per channel 1600 MHz 1600 MHz† 1600 MHz
Maximum operating speed - RAS mode (1:1 mode - SMI2 link operates at the speed shown)
1 DIMM per channel 1866 MHz 1866 MHz 1866 MHz
2 DIMMs per channel 1866 MHz 1866 MHz 1866 MHz
3 DIMMs per channel 1600 MHz 1600 MHz† 1600 MHz
* Maximum quantity supported is shown for all processors that are installed
† This speed is achieved only when Lenovo TruDDR4 memory is used
Lenovo System x3850 X6 (6241) 19

Table 9. Maximum memory speeds - DDR3 memory
DIMM
specification DDR3 RDIMMs DDR3 LRDIMMs
Rank Single rank Dual rank Quad rank 8-rank
Part numbers 00D5024 (4GB)
00D5036 (8GB)
46W0672 (16GB) 46W0676 (32GB) 46W0741 (64GB)
Rated speed 1600 MHz 1600 MHz 1600 MHz 1333 MHz
Rated voltage 1.35 V 1.35 V 1.35 V 1.35 V
Operating voltage 1.35 V 1.5 V 1.35 V 1.5 V 1.35 V 1.5 V 1.35 V 1.5 V
Max qty supported* 96 96 96 96 96 96 96 96
Max DIMM capacity 8 GB 8 GB 16 GB 16 GB 32 GB 32 GB 64 GB 64 GB
Max memory
capacity
0.75 TB 0.75 TB 1.5 TB 1.5 TB 3 TB 3 TB 6 TB 6 TB
Maximum operating speed - Performance mode (2:1 mode - SMI2 link operates at twice the speed shown)
1 DIMM per channel 1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
2 DIMMs per channel 1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
3 DIMMs per channel 1066
MHz
1333
MHz
1066
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
Maximum operating speed - RAS mode (1:1 mode - SMI2 link operates at the speed shown)
1 DIMM per channel 1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1333
MHz
2 DIMMs per channel 1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1600
MHz
1333
MHz
1333
MHz
3 DIMMs per channel 1066
MHz
1333
MHz
1066
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
1333
MHz
* Maximum quantity supported is shown for all processors that are installed
The following memory protection technologies are supported:
ECC
Chipkill (for x4-based memory DIMMs)
Redundant bit steering (Double Device Data Correction)
Memory mirroring
Memory rank sparing
Chipkill and Redundant Bit Steering are supported in RAS mode. Chipkill is supported in Performance
mode.
If memory mirroring is used, DIMMs must be installed in pairs for Performance mode (minimum of one pair
per each processor) and quads for RAS mode. DIMMs in the pair/quad must be identical in type and size.
If memory rank sparing is used, then a minimum of two single-rank or dual-rank DIMMs must be installed
per populated channel (the DIMMs do not need being identical). In rank sparing mode, one rank of a DIMM
in each populated channel is reserved as spare memory. The size of a rank varies depending on the
DIMMs that are installed.
Internal storage
Lenovo System x3850 X6 (6241) 20