SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

The type of protection to use for the disk volume directory: full-block checking
(CHECKPOINT), serial writes (SERIAL), or disabled (OFF).
ProtectDirectory
The number of seconds that the NonStop storage controller must wait for the
device to respond to a recovery I/O. This attribute only applies to ESS
(Enterprise Storage) disks.
RecoveryTimeout
The number of revive blocks of disk data to be copied during each copy
interval when the disk is being revived.
ReviveBlocks
The interval of time, in 10-millisecond units, between each copy operation
and the next when the disk is being revived
ReviveInterval
The priority of a revive task that executes in the DP2 IOP. See also
REVIVEPRIORITY.
RevivePriority
The amount of data to be revived between preemption checks. See also
REVIVERATE.
ReviveRate
(Mirrored volumes only) specifies whether serial writes are used when updating
files. ENABLED minimizes the potential data loss caused by certain processor
error conditions. DISABLED maximizes the performance of mirrored volumes.
When ENABLED, the IOP performs serial write operations when the mirror
disk is up. If the mirror disk is not up and if the FullCheckpoints value is
SerialWrites
FORCED or ENABLED, full-block checkpoints are used to protect the validity
of the data. See also FULLCHECKPOINTS.
Shows whether the disk process is enabled (STARTED) or disabled (STOPPED)
when the disk process is launched.
StartState
Shows whether write caching is enabled.WriteCache
Displaying Information about Partitioned Disks
Effective with the H06.23/J06.12 RVU, Hard Disk Drives (HDDs) and Solid State Drives (SDDs) in
Serial Attached SCSI (SAS) enclosures connected to CLIMs can be partitioned. SCF and OSM
provides serviceability and manageability for SAS disk partitioning. See “Partitioning HDDs and
SSDs” (page 92) in Chapter 6 for more information.
Use the “INFO PARTITION Command” (page 256) to display the disk partition information for a
physical disk by providing the primary and backup CLIMs and the LUNs that correspond to that
physical disk. The INFO DISK, CONFIG command provides the CLIMs and LUNs for the primary
and mirror disks.
Here is an example of the INFO PARTITION $ZZSTO command:
->INFO PARTITION $ZZSTO, PRIMARYCLIM S1002533, PRIMARYLUN 101,
BACKUPCLIM S1002531
STORAGE - LUN PARTITION Info
PRIMARY CLIM \NBSTS01.$ZZSTO.#S1002533
Configured Partitions: LUN 101
Name Partition Size (GB)
$DATA00-P 1 20
$SWAP00-M 2 10
None 3 30
None 4 40
BACKUP CLIM \NBSTS01.$ZZSTO.#S1002531
Configured Partitions: LUN 101
Name Partition Size (GB)
$DATA00-B 1 20
$SWAP00-MB 2 10
56 Displaying Information About Disk Drives