Fan, Esm, And Power Supply Bays - IBM TotalStorage DS4000 EXP100 Installation, User's, And Maintenance Manual

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Fan, ESM, and power supply bays

Hot-swap drive bays
Figure 1. EXP100 hot-swap drive bays
The EXP100 supports up to 14 1.5 Gbps SATA hard disk drives. These drives are
preinstalled in drive trays. This drive and carrier assembly is called a drive CRU.
The SATA drive CRU includes the drive tray, the SATA drive, and the hard disk drive
(HDD) interposer card. You install the drive CRUs in the 14 drive bays on the front
of the expansion enclosure. There are no serviceable parts in a drive CRU. If it
fails, it must be replaced in its entirety (drive, interposer, bezel, and tray).
Attention:
1. After you remove a drive CRU, wait at least 70 seconds before replacing or
reseating the drive CRU to allow the drive to properly spin down. Failure to do
so may cause undesired events.
2. Never hot-swap a drive CRU when its associated green Activity LED is flashing.
Hot-swap a drive CRU only when its associated amber Fault LED lights and is
not flashing or when the drive is inactive and its associated green Activity LED
lights and is not flashing.
3. The SATA drive and its HDD card are digitally signed together at the factory. Do
not swap drives and interposers between drive CRUs. Do not replace one SATA
drive with another SATA drive. These actions will result in a drive CRU that
cannot be recognized by the expansion enclosure ESM.
4. The 400 GB SATA drive options and CRU (P/N 39M4575) and the new 250 GB
SATA CRU (P/N 40K6837) require ESM firmware level 956x or later.
Recommendation: IBM strongly recommends that you check and maintain the
DS4000 storage subsystem controller firmware and EXP100 ESM firmware at
the latest levels posted on the IBM DS4000 storage subsystem support Web
site, even if you do not have any 400 GB drive options in your DS4000
configuration. This ensures compatibility when existing SATA hard drives need
to be replaced with the new drive options or SATA drive CRUs.
Note: If the hard disk drive you want to remove is not in a failed or bypass state,
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 storage expansion
enclosure.
The locations of the EXP100 hot-swap fan bays, hot-swap ESM bays, and hot-swap
power supply bays are shown in Figure 2 on page 16.
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Chapter 1. Introduction