Chapter 3 Servicing and upgrading a PFC 500/E
44
PFC 500/E Instruction Manual
2 December 1999
Replacing or adding a disk module
>>> CAUTION: You can destroy a storage system beyond recovery if you move the
wrong drive. The system operator or service person can move a disk module with
the following cautions:
• The disk module must be unbound.
• Moving a module that is part of a LUN to another slot makes all information on the
LUN inaccessible.
• You must remove and install the disk module while the storage system is powered
up.
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 disk module being inserted or removed may be damaged by a partially removed
adjacent module.
When replacing multiple disks, observe the following:
• After removing a disk module, wait for the activity lights on the other disk modules
to resume a steady flicker before removing the next module. The activity lights
show that the LIC (licensed internal code) has rediscovered the FC loop.
• After inserting a disk module, wait for the activity lights on the other drives to
resume a steady flicker before inserting the next module. As with module removal,
the activity lights show that the LIC has rediscovered the FC loop.
>>> CAUTION: 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 appears on the top or bottom
of the module. A replacement or add-on disk module should have the same format
(520- or 512-byte sectors) and the same capacity as the other modules in the chassis.
IMPORTANT: You must open the PFC 500/E’s front door to access the disk
modules. The door must be closed for EMI compliance when the PFC500/E is
powered up. Open it only to replace or add a disk module.
