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Cisco UCS C24 Server Installation and Service Guide
OL-26647-01
Chapter 3 Maintaining the Server
Installing or Replacing Server Components
Replacing Hard Drives or Solid State Drives
This section includes the following information:
• Drive Population Guidelines, page 3-12
• Drive Replacement Procedure, page 3-13
Drive Population Guidelines
The server is orderable in two different versions, each with one of two different front panel/backplane
configurations:
• Cisco UCS C24 (small form-factor (SFF) drives, with 24-drive backplane and expander).
Holds up to twenty-four 2.5-inch hard drives or solid state drives.
• Cisco UCS C24 (small form-factor (SFF) drives, with 16-drive backplane, no expander).
Holds up to sixteen 2.5-inch hard drives or solid state drives.
Note When the server has the 16-drive backplane, only the first 16 drive bays are used.
• Cisco UCS C24 (large form-factor (LFF) drives, with 12-drive backplane and expander).
Holds up to twelve 3.5-inch hard drives.
The drive-bay numbering is shown in Figure 3-5 and Figure 3-6.
Figure 3-5 Drive Numbering, Small Form Factor
Figure 3-6 Drive Numbering, Large Form Factor
Observe these drive population guidelines for optimal performance:
• When populating drives, add drives in the lowest numbered bays first (populate HDD01 first).
Note Sixteen-drive backplane option: If your SFF-drives server has the 16-drive backplane
installed, only the first 16 drive bays are used, with population order HDD1 to HDD16. Keep
blanking trays in all empty bays to ensure optimal air flow and cooling.
• Keep an empty drive blanking tray in any unused bays to ensure optimal air flow and cooling.
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HDD 01
HDD 02
HDD 03
HDD 04
HDD 05
HDD 06
HDD 07
HDD 08
HDD 09
HDD 10
HDD 11
HDD 12
HDD 13
HDD 14
HDD 15
HDD 16
HDD 17
HDD 18
HDD 19
HDD 20
HDD 21
HDD 22
HDD 23
HDD 24
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HDD01
HDD05
HDD09
HDD02
HDD06
HDD10
HDD03
HDD07
HDD11
HDD04
HDD08
HDD12