Cisco UCS C220 M5 User manual

Maintaining the Server
•Status LEDs and Buttons, on page 1
•Preparing For Component Installation, on page 6
•Removing and Replacing Components, on page 11
•Service Headers and Jumpers, on page 79
Status LEDs and Buttons
This section contains information for interpreting front, rear, and internal LED states.
Front-Panel LEDs
Figure 1: Front Panel LEDs
Table 1: Front Panel LEDs, Definition of States
StatesLED Name
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• Off—The hard drive is operating properly.
• Amber—Drive fault detected.
• Amber, blinking—The device is rebuilding.
• Amber, blinking with one-second interval—Drive
locate function activated in the software.
SAS/SATA drive fault
NVMe solid state drive (SSD) drive tray
LEDs have different behavior than
SAS/SATA drive trays.
Note
1
SAS
• Off—There is no hard drive in the hard drive tray (no
access, no fault).
• Green—The hard drive is ready.
•Green, blinking—The hard drive is reading or writing
data.
SAS/SATA drive activity LED2
SAS
• Off—The drive is not in use and can be safely
removed.
• Green—The drive is in use and functioning properly.
• Green, blinking—the driver is initializing following
insertion or the driver is unloading following an eject
command.
• Amber—The drive has failed.
• Amber, blinking—A drive Locate command has been
issued in the software.
NVMe SSD drive fault
NVMe solid state drive (SSD) drive tray
LEDs have different behavior than
SAS/SATA drive trays.
Note
1
NVMe
• Off—No drive activity.
• Green, blinking—There is drive activity.
NVMe SSD activity2
NVMe
• Off—There is no AC power to the server.
•Amber—The server is in standby power mode. Power
is supplied only to the Cisco IMC and some
motherboard functions.
• Green—The server is in main power mode. Power is
supplied to all server components.
Power button/LED3
• Off—The unit identification function is not in use.
• Blue, blinking—The unit identification function is
activated.
Unit identification4
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Front-Panel LEDs

• Green—The server is running in normal operating
condition.
• Green, blinking—The server is performing system
initialization and memory check.
• Amber, steady—The server is in a degraded
operational state (minor fault). For example:
• Power supply redundancy is lost.
• CPUs are mismatched.
• At least one CPU is faulty.
• At least one DIMM is faulty.
•At least one drive in a RAID configuration failed.
• Amber, 2 blinks—There is a major fault with the
system board.
• Amber, 3 blinks—There is a major fault with the
memory DIMMs.
• Amber, 4 blinks—There is a major fault with the
CPUs.
System health5
• Green—All power supplies are operating normally.
• Amber, steady—One or more power supplies are in
a degraded operational state.
• Amber, blinking—One or more power supplies are
in a critical fault state.
Power supply status6
• Green—All fan modules are operating properly.
•Amber, blinking—One or more fan modules breached
the non-recoverable threshold.
Fan status7
• Off—The Ethernet LOM port link is idle.
• Green—One or more Ethernet LOM ports are
link-active, but there is no activity.
• Green, blinking—One or more Ethernet LOM ports
are link-active, with activity.
Network link activity8
•Green—The server is operating at normal temperature.
• Amber, steady—One or more temperature sensors
breached the critical threshold.
• Amber, blinking—One or more temperature sensors
breached the non-recoverable threshold.
Temperature status9
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Front-Panel LEDs

Rear-Panel LEDs
Figure 2: Rear Panel LEDs
Table 2: Rear Panel LEDs, Definition of States
StatesLED Name
• Amber—Link speed is 100 Mbps.
• Amber—Link speed is 1 Gbps.
• Green—Link speed is 10 Gbps.
1-Gb/10-Gb Ethernet link speed (on both LAN1 and
LAN2)
1
• Off—No link is present.
• Green—Link is active.
• Green, blinking—Traffic is present on the active link.
1-Gb/10-Gb Ethernet link status (on both LAN1 and
LAN2)
2
• Off—Link speed is 10 Mbps.
• Amber—Link speed is 100 Mbps.
• Green—Link speed is 1 Gbps.
1-Gb Ethernet dedicated management link speed3
• Off—No link is present.
• Green—Link is active.
• Green, blinking—Traffic is present on the active link.
1-Gb Ethernet dedicated management link status4
• Off—The unit identification function is not in use.
• Blue, blinking—The unit identification function is
activated.
Rear unit identification5
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Rear-Panel LEDs

AC power supplies:
• Off—No AC input (12 V main power off, 12 V
standby power off).
• Green, blinking—12 V main power off; 12 V standby
power on.
• Green, solid—12 V main power on; 12 V standby
power on.
• Amber, blinking—Warning threshold detected but 12
V main power on.
• Amber, solid—Critical error detected; 12 V main
power off (for example, over-current, over-voltage,
or over-temperature failure).
DC power supplies:
• Off—No DC input (12 V main power off, 12 V
standby power off).
• Green, blinking—12 V main power off; 12 V standby
power on.
• Green, solid—12 V main power on; 12 V standby
power on.
• Amber, blinking—Warning threshold detected but 12
V main power on.
• Amber, solid—Critical error detected; 12 V main
power off (for example, over-current, over-voltage,
or over-temperature failure).
Power supply status (one LED each power supply unit)6
Internal Diagnostic LEDs
The server has internal fault LEDs for CPUs, DIMMs, and fan modules.
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Internal Diagnostic LEDs

Figure 3: Internal Diagnostic LED Locations
DIMM fault LEDs (one behind each DIMM socket
on the motherboard)
These LEDs operate only when the server is in
standby power mode.
• Amber—DIMM has a fault.
• Off—DIMM is OK.
3Fan module fault LEDs (one behind each fan
connector on the motherboard)
• Amber—Fan has a fault or is not fully seated.
• Green—Fan is OK.
1
-CPU fault LEDs (one behind each CPU socket on
the motherboard).
These LEDs operate only when the server is in
standby power mode.
• Amber—CPU has a fault.
• Off—CPU is OK.
2
Preparing For Component Installation
This section includes information and tasks that help prepare the server for component installation.
Required Equipment For Service Procedures
The following tools and equipment are used to perform the procedures in this chapter:
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Maintaining the Server
Preparing For Component Installation

• T-30 Torx driver (supplied with replacement CPUs for heatsink removal)
• #1 flat-head screwdriver (supplied with replacement CPUs for heatsink removal)
• #1 Phillips-head screwdriver (for M.2 SSD and intrusion switch replacement)
• Electrostatic discharge (ESD) strap or other grounding equipment such as a grounded mat
Shutting Down and Removing Power From the Server
The server can run in either of two power modes:
• Main power mode—Power is supplied to all server components and any operating system on your drives
can run.
• Standby power mode—Power is supplied only to the service processor and certain components. It is safe
for the operating system and data to remove power cords from the server in this mode.
After a server is shut down to standby power, electric current is still present in the server. To completely
remove power as directed in some service procedures, you must disconnect all power cords from all power
supplies in the server.
Caution
You can shut down the server by using the front-panel power button or the software management interfaces.
Shutting Down Using the Power Button
Step 1 Check the color of the Power button/LED:
• Amber—The server is already in standby mode and you can safely remove power.
• Green—The server is in main power mode and must be shut down before you can safely remove power.
Step 2 Invoke either a graceful shutdown or a hard shutdown:
To avoid data loss or damage to your operating system, you should always invoke a graceful shutdown of the
operating system.
Caution
• Graceful shutdown—Press and release the Power button. The operating system performs a graceful shutdown and
the server goes to standby mode, which is indicated by an amber Power button/LED.
• Emergency shutdown—Press and hold the Power button for 4 seconds to force the main power off and immediately
enter standby mode.
Step 3 If a service procedure instructs you to completely remove power from the server, disconnect all power cords from the
power supplies in the server.
Shutting Down Using The Cisco IMC GUI
You must log in with user or admin privileges to perform this task.
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Shutting Down and Removing Power From the Server

Step 1 In the Navigation pane, click the Server tab.
Step 2 On the Server tab, click Summary.
Step 3 In the Actions area, click Power Off Server.
Step 4 Click OK.
The operating system performs a graceful shutdown and the server goes to standby mode, which is indicated by an amber
Power button/LED.
Step 5 If a service procedure instructs you to completely remove power from the server, disconnect all power cords from the
power supplies in the server.
Shutting Down Using The Cisco IMC CLI
You must log in with user or admin privileges to perform this task.
Step 1 At the server prompt, enter:
Example:
server# scope chassis
Step 2 At the chassis prompt, enter:
Example:
server/chassis# power shutdown
The operating system performs a graceful shutdown and the server goes to standby mode, which is indicated by an amber
Power button/LED.
Step 3 If a service procedure instructs you to completely remove power from the server, disconnect all power cords from the
power supplies in the server.
Shutting Down Using The Cisco UCS Manager Equipment Tab
You must log in with user or admin privileges to perform this task.
Step 1 In the Navigation pane, click Equipment.
Step 2 Expand Equipment > Rack Mounts > Servers.
Step 3 Choose the server that you want to shut down.
Step 4 In the Work pane, click the General tab.
Step 5 In the Actions area, click Shutdown Server.
Step 6 If a confirmation dialog displays, click Yes.
The operating system performs a graceful shutdown and the server goes to standby mode, which is indicated by an amber
Power button/LED.
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Shutting Down Using The Cisco IMC CLI

Step 7 If a service procedure instructs you to completely remove power from the server, disconnect all power cords from the
power supplies in the server.
Shutting Down Using The Cisco UCS Manager Service Profile
You must log in with user or admin privileges to perform this task.
Step 1 In the Navigation pane, click Servers.
Step 2 Expand Servers > Service Profiles.
Step 3 Expand the node for the organization that contains the service profile of the server that you are shutting down.
Step 4 Choose the service profile of the server that you are shutting down.
Step 5 In the Work pane, click the General tab.
Step 6 In the Actions area, click Shutdown Server.
Step 7 If a confirmation dialog displays, click Yes.
The operating system performs a graceful shutdown and the server goes to standby mode, which is indicated by an amber
Power button/LED.
Step 8 If a service procedure instructs you to completely remove power from the server, disconnect all power cords from the
power supplies in the server.
Removing the Server Top Cover
Step 1 Remove the top cover:
a) If the cover latch is locked, use a screwdriver to turn the lock 90-degrees counterclockwise to unlock it.
b) Lift on the end of the latch that has the green finger grip. The cover is pushed back to the open position as you lift
the latch.
c) Lift the top cover straight up from the server and set it aside.
Step 2 Replace the top cover:
a) With the latch in the fully open position, place the cover on top of the server about one-half inch (1.27 cm) behind
the lip of the front cover panel. The opening in the latch should fit over the peg that sticks up from the fan tray.
b) Press the cover latch down to the closed position. The cover is pushed forward to the closed position as you push
down the latch.
c) If desired, lock the latch by using a screwdriver to turn the lock 90-degrees clockwise.
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Shutting Down Using The Cisco UCS Manager Service Profile

Figure 4: Removing the Top Cover
Locking cover latch2Top cover1
Serial number label location3
Serial Number Location
The serial number for the server is printed on a label on the top of the server, near the front. See Removing
the Server Top Cover, on page 9.
Hot Swap vs Hot Plug
Some components can be removed and replaced without shutting down and removing power from the server.
This type of replacement has two varieties: hot-swap and hot-plug.
• Hot-swap replacement—You do not have to shut down the component in the software or operating
system. This applies to the following components:
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Serial Number Location

• SAS/SATA hard drives
• SAS/SATA solid state drives
• Cooling fan modules
• Power supplies (when redundant as 1+1)
• Hot-plug replacement—You must take the component offline before removing it for the following
component:
• NVMe PCIe solid state drives
Removing and Replacing Components
Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous
voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might
disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate
the system unless all cards, faceplates, front covers, and rear covers are in place.
Statement 1029
Warning
When handling server components, handle them only by carrier edges and use an electrostatic discharge (ESD)
wrist-strap or other grounding device to avoid damage.
Caution
You can press the unit identification button on the front panel or rear panel to turn on a flashing, blue unit
identification LED on both the front and rear panels of the server. This button allows you to locate the specific
server that you are servicing when you go to the opposite side of the rack. You can also activate these LEDs
remotely by using the Cisco IMC interface.
Tip
This section describes how to install and replace server components.
Serviceable Component Locations
This topic shows the locations of the field-replaceable components and service-related items. The view in the
following figure shows the server with the top cover removed.
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Removing and Replacing Components

Figure 5: Cisco UCS C220 M5 Server, Serviceable Component Locations
Power supplies (hot-swappable when redundant as
1+1)
10Front-loading drive bays 1–10 support SAS/SATA
drives.
• UCSC-220-M5SX: Drive bays 1 and 2
support NVMe PCIe SSDs.
•UCSC-220-M5SN: Drive bays 1 – 10 support
only NVMe PCIe SSDs.
• UCSC-220-M5L: Drive bays 1 and 2 support
NVMe PCIe SSDs.
1
Trusted platform module (TPM) socket on
motherboard (not visible in this view)
11Cooling fan modules (seven, hot-swappable)2
PCIe riser 2/slot 2 (half-height, x16 lane)
Includes PCIe cable connectors for front-loading
NVMe SSDs (x8 lane)
12Supercap unit mounting bracket (RAID backup)3
PCIe riser 1/slot 1 (full-height, x16 lane)
Includes socket for Micro-SD card
13DIMM sockets on motherboard (12 per CPU)4
Modular LOM (mLOM) card bay on chassis floor
(x16 PCIe lane), not visible in this view
14CPUs and heatsinks (up to two)5
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Serviceable Component Locations

Modular RAID (mRAID) riser, can optionally be a
riser that supports either:
• Hardware RAID controller card
• Interposer card for embedded SATA RAID
15Mini-storage module socket. Options:
• SD card module with two SD card slots
• M.2 module with slots for either two SATA
M.2 drives or two NVMe M.2 drives
• Cisco Boot-Optimized M.2 RAID Controller
(module with two slots for SATA M.2 drives,
plus an integrated SATA RAID controller that
can control the two M.2 drives in a RAID 1
array)
6
PCIe cable connectors for front-loading NVMe SSDs
on PCIe riser 2
16Chassis intrusion switch (optional)7
Micro-SD card socket on PCIe riser 117Internal USB 3.0 port on motherboard8
-RTC battery, vertical socket9
The Technical Specifications Sheets for all versions of this server, which include supported component part
numbers, are at Cisco UCS Servers Technical Specifications Sheets (scroll down to Technical Specifications).
Replacing SAS/SATA Hard Drives or Solid State Drives
You do not have to shut down the server or drive to replace SAS/SATA hard drives or SSDs because they
are hot-swappable. To replace an NVMe PCIe SSD drive, which must be shut down before removal, see
Replacing a Front-Loading NVMe SSD, on page 16.
Note
SAS/SATA Drive Population Guidelines
The server is orderable in three different versions, each with a different front panel/drive-backplane
configuration.
• Cisco UCS C220 M5 (UCSC-220-M5SX)—Small form-factor (SFF) drives, with 10-drive backplane.
Supports up to 10 2.5-inch SAS/SATA drives. Drive bays 1 and 2 support NVMe SSDs.
• Cisco UCS C220 M5 (UCSC-220-M5SN)—SFF drives, with 10-drive backplane. Supports up to 10
2.5-inch NVMe-only SSDs.
• Cisco UCS C220 M5 (UCSC-220-M5L)—Large form-factor (LFF) drives, with four-drive backplane.
Supports up to four 3.5-inch SAS/SATA drives. Drive bays 1 and 2 support NVMe SSDs. A size-converter
drive sled is required to hold 2.5-inch SSDs.
Drive bay numbering is shown in the following figures.
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Replacing SAS/SATA Hard Drives or Solid State Drives

Figure 6: Small Form-Factor Drive Versions, Drive Bay Numbering
Figure 7: Large Form-Factor Drive Version, Drive Bay Numbering
Observe these drive population guidelines for optimum performance:
• When populating drives, add drives to the lowest-numbered bays first.
• Keep an empty drive blanking tray in any unused bays to ensure proper airflow.
• You can mix SAS/SATA hard drives and SAS/SATA SSDs in the same server. However, you cannot
configure a logical volume (virtual drive) that contains a mix of hard drives and SSDs. That is, when
you create a logical volume, it must contain all SAS/SATA hard drives or all SAS/SATA SSDs.
4K Sector Format SAS/SATA Drives Considerations
•You must boot 4K sector format drives in UEFI mode, not legacy mode. UEFI mode is the system default.
Only if the mode has been changed and must be changed back to UEFI mode, see the following procedure.
• Do not configure 4K sector format and 512-byte sector format drives as part of the same RAID volume.
• For operating system support on 4K sector drives, see the interoperability matrix tool for your server:
Hardware and Software Interoperability Matrix Tools
Setting Up UEFI Mode Booting in the BIOS Setup Utility
UEFI mode is the system default. Use this procedure if the mode has been changed and must be set back to
UEFI mode.
Step 1 Enter the BIOS setup utility by pressing the F2 key when prompted during bootup.
Step 2 Go to the Boot Options tab.
Step 3 Set Boot Mode to UEFI Mode.
Step 4 Under Boot Option Priorities, set your OS installation media (such as a virtual DVD) as your Boot Option #1.
Step 5 Press F10 to save changes and exit the BIOS setup utility. Allow the server to reboot.
Step 6 After the OS installs, verify the installation:
a) Enter the BIOS setup utility by pressing the F2 key when prompted during bootup.
b) Go to the Boot Options tab.
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4K Sector Format SAS/SATA Drives Considerations

c) Under Boot Option Priorities, verify that the OS you installed is listed as your Boot Option #1.
Replacing a SAS/SATA Drive
Step 1 Remove the drive that you are replacing or remove a blank drive tray from the bay:
a) Press the release button on the face of the drive tray.
b) Grasp and open the ejector lever and then pull the drive tray out of the slot.
c) If you are replacing an existing drive, remove the four drive-tray screws that secure the drive to the tray and then lift
the drive out of the tray.
Step 2 Install a new drive:
a) Place a new drive in the empty drive tray and install the four drive-tray screws.
b) With the ejector lever on the drive tray open, insert the drive tray into the empty drive bay.
c) Push the tray into the slot until it touches the backplane, and then close the ejector lever to lock the drive in place.
Figure 8: Replacing a Drive in a Drive Tray
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Replacing a SAS/SATA Drive

Drive tray screws (two on each side)3Ejector lever1
Drive removed from drive tray4Release button2
Replacing a Front-Loading NVMe SSD
This section is for replacing 2.5-inch or 3.5-inch form-factor NVMe solid-state drives (SSDs) in front-panel
drive bays. To replace HHHL form-factor NVMe SSDs in the PCIe slots, see Replacing HHHL Form-Factor
NVMe Solid State Drives, on page 20.
Front-Loading NVMe SSD Population Guidelines
The front drive bay support for 2.5- or 3.5-inch NVMe SSDs differs by server PID:
•UCSC-220-M5SX—Small form-factor (SFF) drives, with 10-drive backplane. Drive bays 1 and 2 support
2.5-inch NVMe SSDs.
• UCSC-220-M5SN—SFF drives, with 10-drive backplane. Drive bay 1 - 10 support 2.5-inch NVMe-only
SSDs.
•UCSC-220-M5L—Large form-factor (LFF) drives, with four-drive backplane. Drive bays 1 and 2 support
2.5-inch and 3.5-inch NVMe SSDs. If you use 2.5-inch NVMe SSDs, a size-converter drive tray
(UCS-LFF-SFF-SLED2) is required for this version of the server.
Front-Loading NVME SSD Requirements and Restrictions
Observe these requirements:
• The server must have two CPUs. PCIe riser 2 is not available in a single-CPU system. PCIe riser 2 has
connectors for the cable that connects to the front-panel drive backplane.
• PCIe cable CBL-NVME-C220FF. This is the cable that carries the PCIe signal from the front-panel drive
backplane to PCIe riser 2. This cable is for all versions of this server.
• Hot-plug support must be enabled in the system BIOS. If you ordered the system with NVMe drives,
hot-plug support is enabled at the factory.
• The NVMe-optimized, SFF 10-drive version, UCSC-C220-M5SN, supports NVMe drives only. This
version of the server comes with an NVMe-switch card factory-installed in the internal mRAID riser for
support of NVMe drives in slots 3 - 10. The NVMe drives in slots 1 and 2 are supported by PCIe riser
2. The NVMe switch card is not orderable separately.
Observe these restrictions:
• NVMe SFF 2.5- and 3.5-inch SSDs support booting only in UEFI mode. Legacy boot is not supported.
For instructions on setting up UEFI boot, see 4K Sector Format SAS/SATA Drives Considerations, on
page 14.
• You cannot control NVMe PCIe SSDs with a SAS RAID controller because NVMe SSDs interface with
the server via the PCIe bus.
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Replacing a Front-Loading NVMe SSD

• You can combine NVMe 2.5- or 3.5-inch SSDs and HHHL form-factor SSDs in the same system, but
the same partner brand must be used. For example, two Intel NVMe SFF 2.5-inch SSDs and two HGST
HHHL form-factor SSDs is an invalid configuration. A valid configuration is two HGST NVMe SFF
2.5-inch SSDs and two HGST HHHL form-factor SSDs.
• UEFI boot is supported in all supported operating systems. Hot-insertion and hot-removal are supported
in all supported operating systems except VMWare ESXi.
Enabling Hot-Plug Support in the System BIOS
Hot-plug (OS-informed hot-insertion and hot-removal) is disabled in the system BIOS by default.
• If the system was ordered with NVMe PCIe SSDs, the setting was enabled at the factory. No action is
required.
• If you are adding NVMe PCIe SSDs after-factory, you must enable hot-plug support in the BIOS. See
the following procedures.
Enabling Hot-Plug Support Using the BIOS Setup Utility
Step 1 Enter the BIOS setup utility by pressing the F2 key when prompted during bootup.
Step 2 Navigate to Advanced > PCI Subsystem Settings > NVMe SSD Hot-Plug Support.
Step 3 Set the value to Enabled.
Step 4 Save your changes and exit the utility.
Enabling Hot-Plug Support Using the Cisco IMC GUI
Step 1 Use a browser to log in to the Cisco IMC GUI for the server.
Step 2 Navigate to Compute > BIOS > Advanced > PCI Configuration.
Step 3 Set NVME SSD Hot-Plug Support to Enabled.
Step 4 Save your changes.
Replacing a Front-Loading NVMe SSD
This topic describes how to replace 2.5- or 3.5-inch form-factor NVMe SSDs in the front-panel drive bays.
OS-surprise removal is not supported. OS-informed hot-insertion and hot-removal are supported on all
supported operating systems except VMware ESXi.
Note
OS-informed hot-insertion and hot-removal must be enabled in the system BIOS. See Enabling Hot-Plug
Support in the System BIOS, on page 17.
Note
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Enabling Hot-Plug Support in the System BIOS

Step 1 Remove an existing front-loading NVMe SSD:
a) Shut down the NVMe SSD to initiate an OS-informed removal. Use your operating system interface to shut down
the drive, and then observe the drive-tray LED:
• Green—The drive is in use and functioning properly. Do not remove.
• Green, blinking—the driver is unloading following a shutdown command. Do not remove.
• Off—The drive is not in use and can be safely removed.
b) Press the release button on the face of the drive tray.
c) Grasp and open the ejector lever and then pull the drive tray out of the slot.
d) Remove the four drive tray screws that secure the SSD to the tray and then lift the SSD out of the tray.
If this is the first time that front-loading NVMe SSDs are being installed in the server, you must install PCIe
cable CBL-NVME-C220FF before installing the drive. See Installing a PCIe Cable For Front-Loading NVMe
SSDs, on page 19.
Note
Step 2 Install a new front-loading NVMe SSD:
a) Place a new SSD in the empty drive tray and install the four drive-tray screws.
b) With the ejector lever on the drive tray open, insert the drive tray into the empty drive bay.
c) Push the tray into the slot until it touches the backplane, and then close the ejector lever to lock the drive in place.
Step 3 Observe the drive-tray LED and wait until it returns to solid green before accessing the drive:
• Off—The drive is not in use.
• Green, blinking—the driver is initializing following hot-plug insertion.
• Green—The drive is in use and functioning properly.
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Replacing a Front-Loading NVMe SSD

Figure 9: Replacing a Drive in a Drive Tray
Drive tray screws (two on each side)3Ejector lever1
Drive removed from drive tray4Release button2
Installing a PCIe Cable For Front-Loading NVMe SSDs
The front-loading NVMe SSDs interface with the server via the PCIe bus. Cable CBL-NVME-C220FF
connects the front-panel drive backplane to the PCIe riser 2 board on the PCIe riser assembly.
• If the server was ordered with 2.5- or 3.5-inch form-factor NVMe SSDs, this cable was preinstalled at
the factory. No action is required.
• If you are adding 2.5- or 3.5-inch form-factor NVMe SSDs for the first time, you must order and install
the cable as described in the following procedure.
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Installing a PCIe Cable For Front-Loading NVMe SSDs

Step 1 Connect the two connectors on one end of the cable to the PCIE-A1 and PCIE-A2 connectors on the drive backplane.
Step 2 Route the cables through the chassis cable guides to the rear of the server as shown below.
Step 3 Connect the single connector on the other end of the cable to the PCIE-FRONT connector on PCIe riser 2.
Figure 10: PCIe Cabling to Drive Backplane
Replacing HHHL Form-Factor NVMe Solid State Drives
This section is for replacing half-height, half-length (HHHL) form-factor NVMe SSDs in the PCIe slots. To
replace 2.5- or 3.5-inch NVMe SSDs in the front-panel drive bays, see Replacing a Front-Loading NVMe
SSD, on page 16.
HHHL SSD Population Guidelines
Observe the following population guidelines when installing HHHL form-factor NVMe SSDs:
• Two-CPU systems—You can populate up to 2 HHHL form-factor SSDs, using PCIe slots 1 – 2.
•One-CPU systems—In a single-CPU system, PCIe riser 2/slot 2 is not available. Therefore, the maximum
number of HHHL form-factor SSDs you can populate is 1, in PCIe slot 1.
HHHL Form-Factor NVME SSD Requirements and Restrictions
Observe these requirements:
• All versions of the server support HHHL form-factor NVMe SSDs.
Observe these restrictions:
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Replacing HHHL Form-Factor NVMe Solid State Drives