Owners Manual

Figure 12. Securing the Power Cable

1. Hook-and-loop strap

8. Press the power switch on the power supply/cooling fan module to turn it on.

NOTE: Allow several seconds for the expansion enclosure to recognize the power supply/

cooling fan module and determine its status. When the power supply/cooling fan module is

functioning properly, the AC power status indicator turns green and the power supply/cooling

fan status indicator is off.

9. In the Dell Storage Client, make sure that the replacement power supply is recognized and shown as

up and running.

10. Use SupportAssist to send diagnostic data to Dell Technical Support.

Replacing Hard Drives

The SC100/SC120 expansion enclosures supports hot-swappable hard drives.

The SC100 expansion enclosure supports up to 12 3.5-inch hard drives installed in a four-column, three-

row configuration. The SC120 expansion enclosure supports up to 24 2.5-inch hard drives installed

vertically side-by-side. Hard drives are connected to a backplane through hard drive carriers. Hard drive

blanks are installed in the hard drive bays that are not occupied.

NOTE: One spare drive is allocated for every 20 drives in the expansion enclosure.

SC100/SC120 Expansion Enclosure Drive Numbering

Drives are numbered from left to right in the SC100/SC120 expansion enclosure.

The Dell Storage Client identifies drives as XX-YY, where XX is the unit ID of the expansion enclosure, and

YY is the drive position inside the

expansion enclosure.

• The SC100 holds up to 12 drives, which are numbered from left to right in rows starting from 0 at the

top-left drive.

Figure 13. SC100 Expansion Enclosure Drive Numbering

Replacing SC100/SC120 Expansion Enclosure Components