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CAUTION: If you are hot swapping the SAS cable chains, ensure that you complete the procedure on one side
within ten minutes to avoid over heating of the storage enclosure.
2. Locate and identify the SAS chain cables for the new physical-disk drawer.
3. Connect the chain cable mounting bracket (oriented horizontally) to the physical-disk drawer.
4. Connect the chain cable mounting bracket (oriented vertically) to the midplane.
5. Install the cooling fan module.
6. Repeat the above mentioned steps for the SAS cable chain on the other side.
Controller Modules
RAID Controller Modules
The RAID controller modules provide high-performance, advanced virtual disk configuration, and fault-tolerant disk
subsystem management. Each RAID controller module contains 2 GB of mirrored cache for high availability and is
protected by a battery powered cache offload mechanism. RAID controller modules provide the following data path and
enclosure management functions:
• Monitoring and controlling enclosure environment elements (temperature, fans, power supplies, and enclosure
LEDs)
• Controlling access to the physical disks
• Communicating enclosure attributes and states to the host server and management station
Removing A RAID Controller Module Or Expansion Module
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.
CAUTION: To avoid damage to the sensitive EMI contacts on the RAID controller module or expansion module, do
not stack RAID controller modules.
1. Using MD Storage Manager, save the RAID controller module or expansion module profile.
2. Identify and locate the RAID controller module or expansion module that you want to replace.
NOTE: The controller fault indicator lights amber when controller fault is detected.
NOTE: Label each cable and SFP module to ensure that all cables or SFP modules are properly connected to
the new RAID controller module or expansion module. You must install the SFP modules in the same slots on
the new RAID controller module or expansion module.
3. Disconnect the cables connected to the RAID controller module or expansion module.
4. Push down on the release tab and pull the release lever away from the chassis.
5. Hold the release lever and pull the module away from the chassis.
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