Dell IP4700, Installation And Service Manual

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IP4700 Installation and Service Guide
Servicing and Upgrading an IP4700
Replacing or Adding a Disk Module
CAUTION
!
Disk drive modules are extremely sensitive electrical components.
When replacing or adding a disk module, observe the following:
• Remove or install disk modules only while the storage system is
powered up.
• Do not move a disk module that is part of an existing file system
to another slot in the storage system. If you do, you risk
destroying the storage system beyond recovery, or, at the very
least, experiencing data loss. Each disk module has file system
identifying information assigned to it when it is bound. Moving it
to another slot can make the information stored on the disk
module from the original file system inaccessible.
• A disk module must be inserted all the way or removed entirely.
Do not leave a disk module partially removed except for periods
when you are allowing it to spin down. A partially removed
adjacent module may damage a disk module being inserted or
removed.
• Handle a disk module gently and use an ESD wristband. Do not
remove a faulty disk module until you have a replacement
module (with the same part number) or a filler module available.
The part number (PN005xxxxxx) appears on the top or bottom of
the module. A replacement disk module should have the same
format (520-bytes-per- sector format is required for arrays) and
the same capacity (size and speed) as the disk it is replacing. An
add-on can be any capacity but must be the 520-bytes-per-sector
format. Volumes should be created using disk modules of equal
size and speed. Refer to the IP4700 Administrator’s Guide for
information on creating volumes.
• Do not remove more than one disk at a time from the storage
system. When removing or installing multiple disk modules, wait
for the activity lights on all other disk modules to resume a steady
flicker before removing or installing the next disk module. The
activity lights show that the system software has rediscovered the
Fibre Channel loop.