Lenovo ThinkAgile HX User manual

User Guide for
ThinkAgile HX Enclosure Node
ThinkAgile HX3721 Node
Machine Type: 7Y87, 7Y88, 7Z 2, 7Z 3

Note
Before using this information and the product it supports, be sure to read and understand the safety
information and the safety instructions, which are available at:
http://thinksystem.lenovofiles.com/help/topic/safety_documentation/pdf_files.html
In addition, be sure that you are familiar with the terms and conditions of the Lenovo warranty for your
solution, which can be found at:
http://datacentersupport.lenovo.com/warrantylookup
First Edition (July 2018)
© Copyri ht Lenovo , 2018.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services
Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-
35F- 5925.

Contents
Chapter 1. Introduction . . . . . . . . . 1
Typical Nutanix architecture . . . . . . . . . . . 1
HX deployment architecture . . . . . . . . . . . 2
Understanding appliances and certified nodes . . . . 3
Identifying your server . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . 5
Enclosure specifications . . . . . . . . . . 5
Compute node specifications . . . . . . . . 6
Management options. . . . . . . . . . . . . . 9
Chapter 2. Solution components . . . 11
Front view . . . . . . . . . . . . . . . . . 12
Enclosure . . . . . . . . . . . . . . . 13
Compute node . . . . . . . . . . . . . 14
Node operator panel . . . . . . . . . . . 15
Rear view . . . . . . . . . . . . . . . . . 16
System Management Module (SMM). . . . . 17
PCIe slot LEDs . . . . . . . . . . . . . 18
System board layout . . . . . . . . . . . . . 19
System-board internal connectors. . . . . . 19
System-board switches . . . . . . . . . . 2
Parts list. . . . . . . . . . . . . . . . . . 21
Enclosure components . . . . . . . . . . 22
Compute node components . . . . . . . . 24
Power cords . . . . . . . . . . . . . . 27
Chapter 3. Network/Infrastructure
Plannin . . . . . . . . . . . . . . . . 29
Chapter 4. Server setup checklist. . . 31
Solution package contents . . . . . . . . . . 31
Cable the solution . . . . . . . . . . . . . . 31
Power on the compute node . . . . . . . . . . 32
Power off the compute node . . . . . . . . 32
Set the network connection for the Lenovo XClarity
Controller . . . . . . . . . . . . . . . . . 32
Enable System Management Module network
connection via Lenovo XClarity Controller . . . 33
Chapter 5. Installin and confi urin
a cluster on ThinkA ile HX Series
servers . . . . . . . . . . . . . . . . . 35
Chapter 6. Installin and settin up
Lenovo XClarity Administrator. . . . . 37
Deploying Lenovo XClarity Administrator . . . . . 37
Managing ThinkAgile HX Series servers . . . . . 37
Chapter 7. Installin and settin up
Lenovo XClarity Inte rator. . . . . . . 39
Deploying Lenovo XClarity Integrator for VMware
vCenter . . . . . . . . . . . . . . . . . . 39
Chapter 8. Hardware replacement
procedures . . . . . . . . . . . . . . . 41
Installation Guidelines . . . . . . . . . . . . 41
System reliability guidelines . . . . . . . . 42
Working inside the solution with the power
on . . . . . . . . . . . . . . . . . . 43
Handling static-sensitive devices . . . . . . 43
Hot-swap drive replacement . . . . . . . . . . 43
Remove a hot-swap drive . . . . . . . . . 44
Install a hot-swap drive . . . . . . . . . . 45
Hot-swap power supply replacement . . . . . . 46
Remove a hot-swap power supply. . . . . . 47
Install a hot-swap power supply . . . . . . 49
System fan replacement . . . . . . . . . . . 51
Remove a system fan. . . . . . . . . . . 52
Install a system fan. . . . . . . . . . . . 54
HBA replacement . . . . . . . . . . . . . . 56
Remove an HBA from the compute node . . . 56
Install an HBA into the compute node . . . . 58
EIOM replacement. . . . . . . . . . . . . . 59
Remove the EIOM . . . . . . . . . . . . 59
Install the EIOM . . . . . . . . . . . . . 61
PCIe adapter replacement. . . . . . . . . . . 62
Remove a PCIe adapter . . . . . . . . . . 62
Install a PCIe adapter . . . . . . . . . . . 64
DIMM replacement . . . . . . . . . . . . . 66
Remove a DIMM. . . . . . . . . . . . . 67
Memory module installation . . . . . . . . 68
M.2 backplane and M.2 drive replacement . . . . 73
Remove the M.2 backplane . . . . . . . . 73
Install the M.2 backplane . . . . . . . . . 74
Remove the M.2 drive . . . . . . . . . . 74
Install an M.2 drive . . . . . . . . . . . . 75
Chapter 9. Updatin firmware. . . . . 79
Appendix A. Confi uration
settin s. . . . . . . . . . . . . . . . . 83
Appendix B. Gettin help and
technical assistance . . . . . . . . . . 85
Appendix C. Trademarks . . . . . . . 87
© Copyright Lenovo , 2 18 i

Index . . . . . . . . . . . . . . . . . . 89
ii User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

Chapter 1. Introduction
The ThinkAgile HX Enclosure and HX3721 is a four-node solution for high-volume network transaction
processings that is fully qualified and that come with VMware ESXi or AHV hypervisors preinstalled. It is
designed to simplify IT operations and management for customers through predefined server configurations
that are optimized around specific types of workloads, while conforming to best practices and compliance
guidelines for Nutanix.
Note: A Nutanix cluster requires a minimum of three or more servers. The best practice is to use three or
more servers of the same machine type and configuration to provide a balanced and high-performance
solution.
In addition, the server is designed to utilize the Lenovo system management tools to create a unified
hardware management solution for Nutanix deployments:
• Lenovo XClarity Administrator, which provides firmware compliance functionality to ensure that the
ThinkAgile HX Enclosure and HX3721 servers are running the appropriate level of firmware for Lenovo
XClarity Controller, UEFI, and PCIe devices.
• Lenovo XClarity Inte rator, which eases the integration into Nutanix Prism.
The ThinkAgile HX Enclosure and HX3721 hardware is based on the ThinkSystem SD53 rack server.
ThinkAgile HX3721
The ThinkAgile HX3721 certified node is engineered for compute-heavy workloads environments.
Helpful links
You might find the following links helpful:
Warranty lookup Lenovo ServerProven Lenovo open source projects
Lenovo product guides (Lenovo Press) Lenovo Configuration and Options
Guide
ThinkAgile HX Best Recipes
Lenovo Support Lenovo forums Drivers and Firmware Updates Best
Practices
Lenovo security advisories Lenovo HX Support Plan
Typical Nutanix architecture
A typical Nutanix architecture includes three or more servers that are implemented as a single Nutanix
cluster.
Each server contributes storage to the Nutanix cluster from the local disks on the server:
• Hybrid Cluster – The server provides a combination of solid state disks (SSDs) for caching and hard disk
drives (HDDs) for storage capacity.
© Copyright Lenovo , 2 18 1

• All-Flash Cluster – The server provides SSDs for caching and SSDs for storage capacity.
The following figure provides a conceptual view of the Nutanix architecture:
For detailed information on Nutanix architecture and workloads, visit
https://lenovopress.com/lp 84-converged-hx-series-nutanix-appliances-workloads-ra
HX deployment architecture
When deploying a ThinkAgile HX Series solution, the best practice is to use three or more servers of the
same machine type and configuration to provide a balanced and high-performance solution. However, some
specialized systems might be used in conjunction, such as “-C” nodes. In addition, 1–node and 2–node
clusters are supported using ThinkAgile HX1321 Series nodes. Lastly, a 1–node replication target is possible,
using the ThinkAgile HX1521-R.
The systems are connected through switches for management and data:
• A dedicated management network is used by the Lenovo XClarity Administrator to communicate with the
Lenovo XClarity Controller (XCC) on each of the ThinkAgile HX Series servers.
• A redundant 1 Gbps Ethernet network is used for NDFS data traffic and user VM traffic. The redundant
Ethernet network is implement through two top-of-rack switches, such as the Lenovo ThinkSystem
NE1 32 RackSwitch.
For more information about the Lenovo ThinkSystem NE1 32 RackSwitch, see the following Web site:
https://lenovopress.com/lp 6 5-lenovo-thinksystem-ne1 32-rackswitch
The following figure shows a typical ThinkAgile HX Series deployment:
2User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

Understandin appliances and certified nodes
When it comes to hyperconverged deployments, Lenovo offers customers flexibility so that they can choose
the model that best suits their business needs.
The ThinkAgile HX Series appliance, a best-in-class turnkey hyperconverged system, incorporates Nutanix’s
industry-leading software and licensing on Lenovo highly reliable platforms. For a seamless customer
experience, the ThinkAgile HX appliance includes white glove Lenovo deployment services and Lenovo
ThinkAgile Advantage Single Point of Support.
For customers who do not require prebundled Nutanix software licenses or deployment services, Lenovo
offers another fully validated and certified choice: the Lenovo ThinkAgile HX Certified Node, which includes:
• Fully validated and integrated Lenovo hardware and firmware, certified with Nutanix software
• Preloaded Nutanix software for ready deployment, Nutanixsoftware license obtained separately
• Lenovo ThinkAgile Advantage Single Point of Support for quick 24/7 problem reporting and resolution
• Optional Lenovo deployment services
Identifyin your server
When you contact Lenovo for help, the machine type and serial number information helps support
technicians to identify your server and provide faster service.
Each compute node supports up to six 2.5-inch hot-swap Serial Attached SCSI (SAS), Serial ATA (SATA) or
Non-Volatile Memory express (NVMe) hard disk drives.
Chapter 1.Introduction 3

Note: The illustrations in this document might differ slightly from your model.
The enclosure machine type, model number and serial number are on the ID label that can be found on the
front of the enclosure, as shown in the following illustration.
Figure 1. ID label on the front of the enclosure
Table 1. ID label on the front of the enclosure
1 ID label
The network access tag can be found on the front of the compute node. You can pull way the network
access tag to paste your own label for recording some information such as the hostname, the system name
and the inventory bar code. Please keep the network access tag for future reference.
Figure 2. Network access tag on the front of the compute node
The node model number and serial number are on the ID label that can be found on the front of the node (on
the underside of the network access tag), as shown in the following illustration.
4User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

Figure 3. ID label on the front of the compute node
Specifications
The following information is a summary of the features and specifications of the solution. Depending on the
model, some features might not be available, or some specifications might not apply.
Enclosure specifications
Features and specifications of the enclosure.
Table 2. Enclosure specifications
Specification Description
PCI expansion slots
(depending on the enclosure
model)
• PCIe 3. x8 shuttle:
– Supports up to eight low-profile PCIe 3. x8 adapters
One node supports up to two low-profile PCIe 3. x8 adapters from processor
1
• PCIe 3. x16 shuttle:
– Supports up to four low-profile PCIe 3. x16 adapters
One node supports one low-profile PCIe 3. x16 adapters from processor 1
Notes:
1. PCIe 3. x16 shuttle supports PCIe cassettes that can be installed and
removed without removing the shuttle from the enclosure.
2. Ensure to power off the node before unseating the PCIe cassette from the
shuttle.
Hot-swap fans • Three 6 x6 x56mm fans
• Two 8 x8 x8 mm fans
Note: Access these fans from the top of the enclosure (see http://
thinksystem.lenovofiles.com/help/topic/7X21/remove_the_fan_cover.html).
Power supply (depending on
the model)
Supports up to two hot-swap power supplies for redundancy support. (Except for the
application of 24 V DC applied through C14 input connect)
• 11 -watt ac power supply
• 16 -watt ac power supply
• 2 -watt ac power supply
Important: Power supplies and redundant power supplies in the enclosure must be
with the same power rating, wattage or level.
System Management Module
(SMM)
• Hot-swappable
• Equipped with ASPEED controller
• Offers RJ45 port for management of nodes and SMM over 1G Ethernet
Chapter 1.Introduction 5

Table 2. Enclosure specifications continued)
Specification Description
Ethernet I/O ports Access to a pair of on-board 1 Gb connections through two types of optional
enclosure level EIOM cards.
• Two optional EIOM cards:
– 1 Gb 8-port EIOM SFP+
– 1 Gb 8-port EIOM Base-T (RJ45)
• Minimum networking speed requirement for the EIOM card: 1Gbps
Note:
The EIOM card is installed in the enclosure and it provides direct access to LAN
functions provided by each node.
Size 2U enclosure
• Height: 87. mm (3.5 inches)
• Depth: 891.5 mm (35.1 inches)
• Width: 488. mm (19.3 inches)
• Weight:
– Minimum configuration (with one minimal configuration node): 22.4 kg (49.4 lbs)
– Maximum configuration (with four maximal configuration nodes): 55. kg (121.2
lbs)
Acoustical noise emissions With the maximum configuration of four nodes with two processors installed, full
memory installed, full drives installed, and two 2 -watt power supplies installed:
• Operation: 6.8 bels
• Idle: 6.2 bels
Heat output (based on two
2 -watt power supplies)
Approximate heat output:
• Minimum configuration (with one minimal configuration node): 6 4.1 BTU per hour
(177 watts)
• Maximum configuration (with four maximal configuration nodes): 7564.4 BTU per
hour (261 watts)
Electrical input • Sine-wave input (5 -6 Hz) required
• Input voltage low range: 11 W is limited to 1 5 W
– Minimum: 1 V AC
– Maximum: 127 V AC
• Input voltage high range: 11 W/16 W/2 W
– Minimum: 2 V AC
– Maximum: 24 V AC
• Input kilovolt-amperes (kVA), approximately:
– Minimum: .153 kVA
– Maximum: 2.61 kVA
Compute node specifications
Features and specifications of the compute node.
6User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

Table 3. Compute node specifications
Specification Description
Processor (depending on the
model)
• Supports up to two Intel Xeon series multi-core processors (one installed)
• Level-3 cache
Notes:
1. Use the Setup utility to determine the type and speed of the processors in the
node.
2. For a list of supported processors, see http://www.lenovo.com/us/en/
serverproven/.
Memory • Minimum: 8 GB (single DDR4 DIMM per processor)
• Maximum: 1, 24 GB
– 512 GB (16 x 32 GB RDIMM)
– 1, 24 GB (16 x 64 GB LRDIMM)
• Type:
– PC4-213 (dual-rank), 2666 MT/s, error correcting code (ECC), double-data-
rate 4 (DDR4) registered DIMM (RDIMM) or load reduced DIMM (LRDIMM)
• Supports (depending on the model):
– 8 GB, 16 GB, and 32 GB RDIMM
– 64 GB LRDIMM
• Slots: 16 DIMM slots
Drive bays Supports up to six 2.5-inch hot-swap SAS/SATA/NVMe drive bays.
Attention: As a general consideration, do not mix standard 512-byte and advanced
4-KB format drives in the same RAID array because it might lead to potential
performance issues.
Supports the following 2.5-inch hot-swap drive backplanes:
• Four 2.5-inch hot-swap SAS/SATA backplane
• Six 2.5-inch hot-swap SAS/SATA backplane
• Six 2.5-inch hot-swap SAS/SATA/NVMe backplane
Important: Do not mix nodes with the four-drive backplane and six-drive
backplanes in the same enclosure. Mixing the four-drive backplane and six-drive
backplanes may cause unbalanced cooling.
RAID adapters (depending on
the model)
• Software RAID supports for RAID levels , 1, 5, and 1
• Hardware RAID supports for RAID levels , 1, 5, and 1
Video controller (integrated
into Lenovo XClarity
Controller)
• ASPEED
• SVGA compatible video controller
• Avocent Digital Video Compression
• Video memory is not expandable
Note: Maximum video resolution is 192 x 12 at 6 Hz.
Ethernet I/O port Access to a pair of on-board 1 Gb connections through two types of optional
enclosure level EIOM cards.
• Two optional EIOM cards:
– 1 Gb 8-port EIOM SFP+
– 1 Gb 8-port EIOM Base-T (RJ45)
• Minimum networking speed requirement for the EIOM card: 1Gbps
Note:
The EIOM card is installed in the enclosure and it provides direct access to LAN
functions provided by each node.
Chapter 1.Introduction 7

Table 3. Compute node specifications continued)
Specification Description
Size Node
• Height: 41. mm (1.7 inches)
• Depth: 562. mm (22.2 inches)
• Width: 222. mm (8.8 inches)
• Weight:
– Minimum weight: 3.5 kg (7.7 lb)
– Maximum weight: 7.5 kg (16.6 lb)
Environment The ThinkAgile HX3721 complies with ASHRAE class A2 specifications.
Depending on the hardware configuration, some solution models comply with
ASHRAE Class A3 or Class A4 specifications. System performance may be impacted
when operating temperature is outside ASHRAE A2 specification or fan failed
condition. To comply with ASHRAE Class A3 and Class A4 specifications, the
ThinkAgile HX3721 needs to meet the following hardware configuration
requirements:
• Lenovo supported processors.
For unsupported processors, see the following attention for details1.
• Lenovo supported PCIe adapters.
For unsupported PCIe adapters, see the following attention for details2.
• Two power supplies installed for redundancy.
11 -watt power supplies are not supported.
The ThinkAgile HX3721 is supported in the following environment:
• Air temperature:
Power on3:
– ASHRAE Class A2: 1 °C - 35°C (5 °F - 95°F); Above 9 m (2,953 ft), de-rated
maximum air temperature 1°C / 3 m (984 ft)
– ASHRAE Class A3: 5°C - 4 °C (41°F - 1 4°F); Above 9 m (2,953 ft), de-rated
maximum air temperature 1°C / 175m (574 ft)
– ASHRAE Class A4: 5°C - 45°C (41°F - 113°F); Above 9 m (2,953 ft), de-rated
maximum air temperature 1°C / 125m (41 ft)
Power off4: 5°C to 45°C (41°F to 113°F)
• Maximum altitude: 3, 5 m (1 , ft)
• Relative Humidity (non-condensing):Power on3:
– ASHRAE Class A2: 8% - 8 %, maximum dew point : 21°C (7 °F)
– ASHRAE Class A3: 8% - 85%, maximum dew point : 24°C (75°F)
– ASHRAE Class A4: 8% - 9 %, maximum dew point : 24°C (75°F)
Shipment/storage: 8% - 9 %
• Particulate contamination:
Airborne particulates and reactive gases acting alone or in combination with other
environmental factors such as humidity or temperature might pose a risk to the
solution.
Power rating 12 V DC, 6 A
Attention:
1. The following processors are not supported with ASHRAE Class A3 and Class A4 specifications:
• 165W processor, 28-core, 26-core or 18-core (Intel Xeon 8176, 8176M, 817 , 817 M, and 615 )
• 15 W processor, 26-core, 24-core, 2 -core, 16-core or 12-core (Intel Xeon 8164, 816 , 816 M, 8158,
6148, 6142, 6142M, and 6136)
• 14 W processor, 22-core or 18-core (Intel Xeon 6152, 614 , and 614 M)
8User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

• 14 W processor, 14-core (Intel Xeon 6132)
• 13 W processor, 8-core (Intel Xeon 6134 and 6134M)
• 125W processor, 2 -core, 16-core or 12-core (Intel Xeon 6138, 6138T, 613 T, 6126)
• 115W processor, 6-core (Intel Xeon 6128)
• 1 5W processor, 14-core or 4-core (Intel Xeon 8156, 5122, and 512 T)
• 7 W processor, 8-core (Intel Xeon 41 9T)
Note: The listed processors are included but not limited to the above list only.
2. The following processors are not supported with ASHRAE Class A2, Class A3 and Class A4
specifications. The following processors are provided for special bid configuration only and need
customer’s acceptance on the limitation consequence. The limitation includes experiencing power
capping and a slight drop in performance when ambient is above 27°C.
• 2 5W processor, 28-core or 24-core (Intel Xeon 818 , 818 M and 8168)
• 2 W processor, 18-core (Intel Xeon 6154)
• 165W processor, 12-core (Intel Xeon 6146)
• 15 W processor, 24-core (Intel Xeon 816 T)
• 15 W processor, 8-core (Intel Xeon 6144)
• 125W processor, 12-core (Intel Xeon 6126T)
Note: The listed processors are included but not limited to the above list only.
3. The following PCIe adapters are not supported with ASHRAE Class A3 and Class A4 specifications:
• Mellanox NIC with active optical cable
• PCIe SSD
• GPGPU card
Note: The listed PCIe adapters are included but not limited to the above list only.
4. Enclosure is powered on.
5. Enclosure is removed from original shipping container and is installed but not in use, for example, during
repair, maintenance, or upgrade.
Mana ement options
Multiple management interfaces are available for managing your ThinkAgile HX Enclosure and HX3721
server.
Lenovo XClarity Administrator
Lenovo XClarity Administrator is a centralized, resource-management solution that simplifies infrastructure
management, speeds responses, and enhances the availability of Lenovo server systems and solutions. It
runs as a virtual appliance that automates discovery, inventory, tracking, monitoring, and provisioning for
server, network, and storage hardware in a secure environment.
Lenovo XClarity Administrator provides a central interface to perform the following functions for all managed
endpoints:
• Mana e and monitor hardware. Lenovo XClarity Administrator provides agent-free hardware
management. It can automatically discover manageable endpoints, including server, network, and storage
hardware. Inventory data is collected for managed endpoints for an at-a-glance view of the managed
hardware inventory and status.
Chapter 1.Introduction 9

• Confi uration mana ement. You can quickly provision and pre-provision all of your servers using a
consistent configuration. Configuration settings (such as local storage, I/O adapters, boot settings,
firmware, ports, and Lenovo XClarity Controller and UEFI settings) are saved as a server pattern that can
be applied to one or more managed servers. When the server patterns are updated, the changes are
automatically deployed to the applied servers.
• Firmware compliance and updates. Firmware management is simplified by assigning firmware-
compliance policies to managed endpoints. When you create and assign a compliance policy to managed
endpoints, Lenovo XClarity Administrator monitors changes to the inventory for those endpoints and flags
any endpoints that are out of compliance.
When an endpoint is out of compliance, you can use Lenovo XClarity Administrator to apply and activate
firmware updates for all devices in that endpoint from a repository of firmware updates that you manage.
• Operatin System deployment. You can use Lenovo XClarity Administrator to manage a repository of
operating-system images and to deploy operating-system images to up to 28 managed servers
concurrently.
• Service and support. You can manually collect diagnostic files, open a problem record, and send
diagnostic files to the Lenovo Support Center.
Lenovo XClarity Administrator can be integrated into external, higher-level management and automation
platforms through open REST application programming interfaces (APIs). Using the REST APIs, Lenovo
XClarity Administrator can easily integrate with your existing management infrastructure. In addition, you can
automate tasks using the PowerShell toolkit or the Python toolkit.
To obtain the latest version of the Lenovo XClarity Administrator, see:
https://datacentersupport.lenovo.com/documents/LNVO-LXCAUPD
Documentation for Lenovo XClarity Administrator is available at:
http://sysmgt.lenovofiles.com/help/topic/com.lenovo.lxca.doc/aug_product_page.html
Lenovo XClarity Inte rator
Lenovo also provides the following integrators that you can use to manage Lenovo servers from higher-level
management tools:
• Lenovo XClarity Integrator for VMware vCenter
• Lenovo XClarity Integrator Microsoft System Center
For more information about Lenovo XClarity Integrator, see:
http://www3.lenovo.com/us/en/data-center/software/systems-management/xclarity-integrators
10 User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

Chapter 2. Solution components
Use the information in this section to learn about each of the components associated with your solution.
When you contact Lenovo for help, the machine type, model, and serial number information helps support
technicians to identify your solution and provide faster service.
Each compute node supports up to six 2.5-inch hot-swap Serial Attached SCSI (SAS), Serial ATA (SATA) or
Non-Volatile Memory express (NVMe) drives.
Note: The illustrations in this document might differ slightly from your model.
The enclosure machine type, model number and serial number are on the ID label that can be found on the
front of the enclosure, as shown in the following illustration.
Figure 4. ID label on the front of the enclosure
Table 4. ID label on the front of the enclosure
1 ID label
The network access tag can be found on the front of the compute node. You can pull way the network
access tag to paste your own label for recording some information such as the hostname, the system name
and the inventory bar code. Keep the network access tag for future reference.
© Copyright Lenovo , 2 18 11

Figure 5. Network access tag on the front of the compute node
The node model number and serial number are on the ID label that can be found on the front of the compute
node (on the underside of the network access tag), as shown in the following illustration.
Figure 6. ID label on the front of the compute node
The system service label, which is on the top of the enclosure, provides a QR code for mobile access to
service information. You can scan the QR code using a QR code reader and scanner with a mobile device
and get quick access to the Lenovo Service Information Web site. The Lenovo Service Information Web site
provides additional information for parts installation and replacement videos, and error codes for solution
support.
Front view
The following illustration shows the controls, LEDs, and connectors on the front of the server.
The following illustration show the front view of server model.
12 User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

Figure 7. Front view of the ThinkAgile HX3721
Table 5. Components in the ThinkAgile HX3721 configuration
1 Activity LED (green) 2 Status LED (yellow)
Drive LEDs:
1 Activity LED ( reen): Green LEDs are on all hot swap drives. When this green LED is lit, it indicates that
there is activity on the associated hard disk drive or solid-state drive.
• When this LED is flashing, it indicates that the drive is actively reading or writing data.
• For SAS and SATA drives, this LED is off when the drive is powered but not active.
• For NVMe (PCIe) SSDs, this LED is on solid when the drive is powered but not active.
Note: The drive activity LED might be in a different location on the front of the drive, depending on the drive
type that is installed.
2 Status LED (yellow): The state of this yellow LED indicates an error condition or the RAID status of the
associated hard disk drive or solid-state drive:
• When the yellow LED is lit continuously, it indicates that an error has occurred with the associated drive.
The LED turns off only after the error is corrected. You can check event logs to determine the source of
the condition.
• When the yellow LED flashes slowly, it indicates that the associated drive is being rebuilt.
• When the yellow LED flashes rapidly, it indicates that the associated drive is being located.
Note: The hard disk drive status LED might be in a different location on the front of the hard disk drive,
depending on the drive type that is installed.
Enclosure
The following illustration shows the controls, LEDs, and connectors on the front of the enclosure.
Notes:
1. The illustrations in this document might differ slightly from your hardware.
2. For proper cooling, a node filler has to be installed into every empty node bay in every configuration.
The enclosure supports up to four compute nodes.
The following illustration shows the node bays in the enclosure.
Chapter 2.Solution components 13

Figure 8. Enclosure front view with compute nodes and node bay numbering
Compute node
The following illustration shows the controls, LEDs, and connectors on the front of the compute node.
ThinkA ile HX3721
See the following illustration for components, connectors and drive bay numbering in six 2.5-inch drive
configuration.
Figure 9. ThinkAgile HX3721 drive configuration and drive bay numbering
Table 6. Components in the ThinkAgile HX3721 configuration
1 Activity LED (green) 2 Status LED (yellow)
Drive LEDs:
1 Activity LED ( reen): Green LEDs are on all hot swap drives. When this green LED is lit, it indicates that
there is activity on the associated hard disk drive or solid-state drive.
• When this LED is flashing, it indicates that the drive is actively reading or writing data.
• For SAS and SATA drives, this LED is off when the drive is powered but not active.
• For NVMe (PCIe) SSDs, this LED is on solid when the drive is powered but not active.
Note: The drive activity LED might be in a different location on the front of the drive, depending on the drive
type that is installed.
2 Status LED (yellow): The state of this yellow LED indicates an error condition or the RAID status of the
associated hard disk drive or solid-state drive:
• When the yellow LED is lit continuously, it indicates that an error has occurred with the associated drive.
The LED turns off only after the error is corrected. You can check event logs to determine the source of
the condition.
• When the yellow LED flashes slowly, it indicates that the associated drive is being rebuilt.
14 User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node

• When the yellow LED flashes rapidly, it indicates that the associated drive is being located.
Note: The hard disk drive status LED might be in a different location on the front of the hard disk drive,
depending on the drive type that is installed.
Node operator panel
The following illustration shows the controls and LEDs on the node operator panel.
Figure 10. Node operator panel
Table 7. Node operator panel
1 NMI pinhole 3 Identification button/LED
2 System error LED 4 Power button/LED
1 NMI pinhole: Press this pinhole to force a non-maskable interrupt to the processor. It allows you to blue
screen the solution and take a memory dump (use this button only when directed by the service support).
You have to use the end of a straightened paper clip to press the pinhole.
2 System error LED: When this LED is lit (yellow), it indicates that a system error has occurred. Check the
event log for additional information.
3 Identification button/LED: The system administrator can light this LED to aid in visually locating the
compute node. This LED can turned on locally by pressing button or using the following commands to
control the identification LED and locate the compute node.
• Turn on:
ipmitool.exe -I lanplus -H <XCC’s IP> -U USERID -P PASSW0RD raw 0x3a 0x08 0x01 0x00
• Turn off:
ipmitool.exe -I lanplus -H <XCC’s IP> -U USERID -P PASSW0RD raw 0x3a 0x08 0x01 0x01
Note: The default XCC’s IP address is 192.168.7 .125
To easily identify the solution from the rear side, see “System Management Module (SMM)” on page 17 for
more information.
4 Power button/LED: When this LED is lit (green), it indicates that the node has power. This green LED
indicates the power status of the compute node:
• Flashing rapidly: The LED flashes rapidly for the following reasons:
– The node has been installed in an enclosure. When you install the compute node, the LED flashes
rapidly for up to 9 seconds while the Lenovo XClarity Controller in the node is initializing.
– The power source is not sufficient to turn on the node.
Chapter 2.Solution components 15

– The Lenovo XClarity Controller in the node is not communicating with the System Management
Module.
• Flashing slowly: The node is connected to the power through the enclosure and ready to turn on.
• Lit continuously: The node is connected to the power through the enclosure.
• Not lit continuously: No power on node.
Rear view
The following illustration shows the connectors and LEDs on the rear of the enclosure.
The following illustration shows the rear view of the entire system.
• Shuttle with eight low profile PCIe x8 slots
Figure 11. Rear view - The enclosure with x8 shuttle installed
Table 8. Components on x8 shuttle
1 1 Gb 8-port EIOM cage (SFP+) 8 PCIe slot 1-B
2 1 Gb 8-port EIOM cage (RJ45) 9 Power supply 2
3 PCIe slot 4-B 10 Power supply 1
4 1 Gb 8-port EIOM cage filler 11 System Management ModuleSingle Ethernet port
System Management Module
5 PCIe slot 3-B 12 PCIe slot 2-B
6 PCIe slot 3-A 13 PCIe slot 2-A
7 PCIe slot 1-A 14 PCIe slot 4-A
Note: Make sure the power cord is properly connected to every power supply unit installed.
• Shuttle with four low profile PCIe x16 cassette bays
16 User Guide for ThinkAgile HX Enclosure Node ThinkAgile HX3721 Node