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4. Repeat step 1 through step 3 to replace the second fan.
Replacing a hard disk drive
Complete the following steps to replace the hot-swap hard disk drives that you
removed before the installation.
Attention:
reseating the drive CRU to allow the drive to properly spin down. Failure to do so
may cause undesired events.
Note: Use Table 22 on page 118 to verify the proper replacement locations of your
1. Lift up on the handle and gently push the drive CRU into the empty bay until the
2. Push the tray handle down until the latch clicks into place.
3. Repeat step 1 and step 2 to replace additional drives.
Setting the interface options
The EXP100 has two enclosure ID switches that identify the EXP100 on a Fibre
Channel loop and that assign physical addresses to the drives. The enclosure ID
switches are located on the back of the expansion enclosure, as shown in
Figure 26.
Figure 26. Enclosure ID switches
Fibre Channel loop and ID settings
When you install a hard disk drive in the expansion enclosure, the drive tray plugs
into a printed circuit board called the midplane. The midplane sets the Fibre
Channel loop ID automatically, based on the enclosure ID switch setting and the
physical location (bay) of the hard disk drive.
Enclosure ID settings
Enclosure ID switch settings (values 0 - 7) set various addresses and IDs. Use
enclosure ID switch X1 to set the ones position, and use enclosure ID switch X10 to
set the tens position. The settings of the two enclosure ID switches, when used
together, provide a two-digit ID of the expansion enclosure. The storage
44
IBM TotalStorage DS4000 EXP100 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
After you remove a drive CRU, wait 70 seconds before replacing or
1.5 Gbps SATA hard disk drives.
hinge of the tray handle latches beneath the expansion enclosure bezel.
1 Gb/s
2 Gb/s
X10
X1
Conflict
Tray Number
1 Gb/s
2 Gb/s
X10
X1
Conflict
Tray Number
Green LED
Amber LED
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Troubleshooting
