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Dell PowerEdge R920 System Owner's Manual

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Removing The Hard-Drive Backplane

CAUTION:Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
  1. If installed, remove the front bezel.
  2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
  3. Open the system.
    CAUTION:To prevent damage to the drives and backplane, you must remove the hard drives from the system before removing the backplane.
    CAUTION:You must note the number of each hard drive and temporarily label them before removal so that you can replace them in the same locations.
  4. Remove all hard drives.
  5. Remove the following:
    1. as applicable, memory risers/memory riser blank
    2. cooling fans
    3. memory riser and fan cage
  6. Remove the SAS expander daughter card sled.
    NOTE:Not applicable for the 2.5 inch (x4) SAS/SATA backplane configuration.
  7. Disconnect the SAS/SATA/SSD data, signal, and power cable(s) from the backplane and system board.
  8. Push the backplane blue release tab(s) in the direction of the arrow(s) and lift the backplane upward.
  9. Pull the backplane away from the system until the securing slots are free from the hooks on the chassis.
    Figure 1. Removing and Installing the 2.5 Inch (x4) SAS/SATA Backplane
    This figure shows removing and installing the (x4) SAS/SATA backplane.
    1. release tab
    2. system board miscellaneous signal cable
    3. SAS connector
    4. hard drive connector
    5. backplane hook (4)
    6. backplane power cable
    Figure 2. 2.5 Inch (x4) SAS/SATA Backplane—Front view
    This figure shows 2.5 Inch (x4) SAS/SATA Backplane—Front view.
    1. SAS connector on the backplane
    2. hard drive connector
    3. backplane hook (4)
    Figure 3. 2.5 Inch (x4) SAS/SATA Backplane—Back view
    This figure shows 2.5 Inch (x4) SAS/SATA Backplane—Back view.
    1. backplane power cable
    2. system board miscellaneous signal cable
    Figure 4. Removing and Installing the 2.5 Inch (x24) SAS/SATA Backplane
    This figure shows removing and installing 2.5 Inch (x24) SAS/SATA Backplane.
    1. release tab (2)
    2. backplane jumper connector
    3. backplane jumper connector for the expander daughter card
    4. backplane power cable
    5. SAS connector
    6. hard drive connector
    7. backplane hook (8)
    8. backplane power cable
    Figure 5. 2.5 Inch (x24) SAS/SATA Backplane—Front view
    This figure shows 2.5 Inch (x24) SAS/SATA Backplane—Front view.
    1. jumper connector
    2. hard drive connector
    3. SAS connector
    4. hard drive connector
    5. backplane loops
    6. backplane hook (8)
    7. backplane jumper connector
    Figure 6. 2.5 Inch (x24) SAS/SATA Backplane—Back view
    This figure shows 2.5 Inch (x24) SAS/SATA Backplane—Back view.
    1. backplane power connector 1
    2. backplane power connector 2
    3. system board miscellaneous signal cable
    Figure 7. Removing and Installing the 2.5 Inch (x16) SAS/SATA and (x8) PCIe SSD Backplane
    This figure shows removing and installing the 2.5 Inch (x16) SAS/SATA and (x8) PCIe SSD Backplane.
    1. release tab (2)
    2. backplane jumper connector
    3. system board miscellaneous signal cable
    4. primary PCIe SSD extender mini-SAS HD connector (4)
    5. SAS connector
    6. secondary PCIe SSD extender mini-SAS HD connector (4)
    7. backplane hook (8)
    8. backplane power connector
    Figure 8. 2.5 Inch (x16) SAS/SATA and (x8) PCIe SSD Backplane—Front view
    This figure shows 2.5 Inch (x16) SAS/SATA and (x8) PCIe SSD Backplane—Front view.
    1. hard drive connector
    2. SAS connector
    3. hard drive connector
    4. backplane loop (2)
    5. backplane hook (8)
    6. jumper connector to the expander daughter card
    Figure 9. Cabling—2.5 Inch (x4) SAS/SATA Backplane with PERC 9
    This figure shows Cabling—2.5 Inch (x4) SAS/SATA Backplane with PERC 9.
    1. SAS cable connector on the integrated storage controller card
    2. integrated storage controller card (PERC 9)
    3. system board
    4. cable management tray
    5. x4 hard drive backplane
    6. SAS connector on the backplane
    Figure 10. Cabling—2.5 Inch (x24) SAS/SATA Backplane with PERC 9
    This figure shows Cabling—2.5 Inch (x24) SAS/SATA Backplane with PERC 9.
    1. SAS (A&B) cable connector on the integrated storage controller card
    2. integrated storage controller card (PERC 9)
    3. system board
    4. cable management tray
    5. x24 hard drive backplane
    6. SAS B cable connector on the expander daughter card
    7. backplane jumper cable connector on the expander daughter card
    8. SAS jumper cable connector on the expander daughter card
    9. SAS A cable connector on the expander daughter card
    10. SAS jumper cable connector on the backplane
    11. backplane jumper cable connector on the backplane
    Figure 11. Cabling—2.5 Inch (x16) SAS/SATA and (x8) PCIe SSD Backplane (left and right side)
    This figure shows Cabling—2.5 Inch (x16) SAS/SATA and (x8) PCIe SSD Backplane (left and right side).
    1. SAS (A&B) cable connector on the integrated storage controller card
    2. integrated storage controller card
    3. system board
    4. cable management tray
    5. secondary PCIe SSD extender mini-SAS HD connector (A to D)
    6. x24 hard-drive backplane
    7. SAS B cable connector on the expander daughter card
    8. SAS jumper cable connector on the expander daughter card
    9. SAS A cable connector on the expander daughter card
    10. SAS jumper cable connector on the backplane
    11. primary PCIe SSD extender mini-SAS HD connector (A to D)
    Figure 12. Cabling— x24 Backplane With Dual PERC And Dual SAS Expander Cards
    This figure shows Cabling— x24 Backplane With Dual PERC And Dual SAS expanders.
    1. SAS cable connector on the primary integrated storage controller card
    2. integrated storage controller card (primary card)
    3. integrated storage controller card (secondary card)
    4. SAS cable connector on the secondary integrated storage controller card
    5. x24 hard drive backplane
    6. primary daughter card SAS B connector
    7. primary daughter card SAS A connector
    8. secondary daughter card SAS B connector
    9. secondary daughter card SAS A connector

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