Installing System Components | 283 
 
 
2.5-inch Hard Drive Expander Configuration 
 
NOTE: Following is the replacement procedure of SATA2 and SAS backplane for 
2.5-inch hard drive expander configuration. The configuration  can apply to 1 ~ 4 
System-Boards and support up to 24 hard drives. For more information on the 
direction details, see the HDD Zoning configuration tool at dell.com/support. 
Removing the 2.5-inch Hard Drive Backplane for Expander 
Configuration  
 
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  It is recommended to turn off the system, including any attached 
peripherals, and disconnect the system from its electrical outlet. 
2  Remove all the hard drives. See “Removing a Hard-Drive Carrier” on 
page 156. 
3  Open the system. See “Opening the System” on page 246. 
 
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.