HP StorageWorks 8000, User Manual

Page: 241 / 268

Command View SDM Limitations
241
Configuration
—
These features are set during initial system setup. Once set,
they should not be changed.
■
Host Port Behavior — This is set to the correct value during initial
configuration and should not be changed. If this is changed, the storage arrays
will not communicate with the NAS server. This task should be performed by
an HP service representative.
■
Host Port ID — This is the Fibre Channel bus address. It is set to be a valid
address that does not conflict with other devices on the bus during initial
installation. Changing this value has unpredictable results.
■
Data Resiliency — Changing this value could result in performance changes
and jeopardizes the integrity of the data stored on the device in the event of a
component of power failure.
■
Automatic include/format/spare — These settings control what happens,
how new disk drives are handled when they are inserted into the storage array.
Changing these settings may result in new storage not being visible to the
NAS server.
■
Auto Rebuild — This setting controls what happens when a drive fails (if an
auto rebuild of the RAID set occurs). Changing the value will require manual
intervention to rebuild the RAID after a drive failure.
Diagnostics — These features provide diagnostic tools. Diagnostics should be
performed by an HP service representative.
■
Array Shutdown — This setting prevents the storage array from accepting
any I/O. This will eventually cause all file system requests from the server to
fail. Data should not be lost, but applications using the storage will no longer
have access to the device.
■
Array Reset/Restart — This feature provides hard and soft resets of the
storage array. If a reset takes too long file system requests from the server may
fail. Data should not be lost, but applications using the storage will lose access
to the device until it is again ready.
■
Down A Disk — This feature logically “removes” a disk from the array
(causing it to not be used). This may cause an array RAID set rebuild.
“Downing” multiple disks could cause data to become unavailable.