Replacing Hot-Swap Hard Disk Drives - IBM TotalStorage DS4000 EXP100 Installation, User's, And Maintenance Manual

Figure 44. Drive CRU handle
Recommendation: If you are installing more than two drives, IBM recommends
that you install the drives two at a time, as follows:
1. Insert two drives.
2. Wait five to eight minutes until the drives are recognized and displayed in the
3. Then, insert the next two drives.

Replacing hot-swap hard disk drives

Drive problems include any malfunctions that delay, interrupt, or prevent successful
I/O activity between the hosts and the hard disk drives in the expansion enclosure.
This includes transmission problems between the host controllers, the ESMs, and
the drives. This section explains how to replace a failed hard disk drive.
Note: If you want to remove a hard disk drive that is not in a failed or bypass state,
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IBM TotalStorage DS4000 EXP100 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
Tray handle
Tray latch
c. Slide the drive CRU into the empty bay until the hinge of the tray handle
latches beneath the expansion enclosure bezel.
d. Push the tray handle down until it latches into place.
Storage Manager Subsystem Management window.
always use the Storage Manager client program either to place the drive in a
failed state or to place the array that is associated with the drive (or drives)
in an offline state before you remove the drive from the expansion enclosure.