Digital Equipment EK-SFXXS-SG-003, Service Manual

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SF3x Storage Enclosure FRU Replacement 5–5
5.1 Warm Swap of Disk ISE
CAUTION
Only qualified service personnel should perform the following
procedures. Before beginning these procedures, make sure that
the system manager has backed up all files on the disk ISE.
This section covers removing and replacing the disk ISE from the SF3x
storage enclosure.
WARNING
Remember that you are performing the following procedures
while the system or systems are up and running, and the rest of
the disk ISEs in that storage enclosure are on-line.
The procedures that follow describe how to:
• Obtain current disk ISE parameters, (Section 5.1.1)
• Remove and replace the disk ISE from the storage enclosure,
(Section 5.1.2)
• Restore the disk ISE to service and test the disk ISE (after repair),
(Section 5.1.3)
CAUTION
Never disconnect any 42-inch DSSI interconnect cables (PN
BC21Q–3F) between storage enclosures and magazine tapes.
Never disconnect any 70-inch DSSI interconnect cables (PN
BC21Q–3F) between the array I/O panel and storage enclosures or
magazine tapes.
Never disconnect any 108-inch DSSI interconnect cables (PN
BC21Q–09) between the storage array and any system I/O panels.
Never remove a DSSI terminator while power is applied.