HP High Availability FC Disk Array 30/FC User Guide - Page 106

Power supply

Page 106 highlights

Failing component Continue after failure? What happens and how to recover Disk module Yes SP Yes* Fan failure Yes within fan pack Provides the same features as the basic configuration but with better performance and higher availability. Applications continue running. System Administrator or service provider replaces module. If one SP fails, the System Administrator can access the LUNs owned by the failed SP by accessing the remaining operational SP with the other host. If a host adapter fails, the System Administrator can access the LUNs in the array with the other host adapter. The System Administrator must change the path and SP ownership of the LUNs for the failed SP or failed host adapter by using LVM (applies to HP-UX 10.x and later) and Grid Manager, respectively. There is no automatic transfer of LUN ownership or path for this configuration type. Applications continue running. System Administrator or service provider replaces module. Power supply Yes SCSI-2 adapter/ No* cable If a redundant power supply module is present, applications continue running; otherwise, disk array fails. Service provider replaces power supply and System Administrator restarts the operating system, if necessary. I/O operations fail to all physical disk units configured on SP attached to a failed SCSI-2 adapter/cable. System Administrator can transfer control to the other SP by changing host(s) and array configurations. Configuration, HP 9000 Series 700 3-11

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Failing
component
Continue after
failure?
What happens and how to recover
Disk module
Yes
Provides the same features as the basic configuration
but with better performance and higher availability.
Applications continue running. System Administrator or
service provider replaces module.
SP
Yes*
If one SP fails, the System Administrator can access the
LUNs owned by the failed SP by accessing the
remaining operational SP with the other host. If a host
adapter fails, the System Administrator can access the
LUNs in the array with the other host adapter. The
System Administrator must change the path and SP
ownership of the LUNs for the failed SP or failed host
adapter by using LVM (applies to HP-UX 10.x and later)
and Grid Manager, respectively. There is no automatic
transfer of LUN ownership or path for this configuration
type.
Fan failure
within fan pack
Yes
Applications continue running. System Administrator or
service provider replaces module.
Power supply
Yes
If a redundant power supply module is present,
applications continue running; otherwise, disk array fails.
Service provider replaces power supply and System
Administrator restarts the operating system, if necessary.
SCSI-2 adapter/
cable
No*
I/O operations fail to all physical disk units configured on
SP attached to a failed SCSI-2 adapter/cable. System
Administrator can transfer control to the other SP by
changing host(s) and array configurations.