HP 2000fc Hp StorageWorks 2000 Family Modular Smart Array CLI reference guide - Page 274

ULP UT UPS vdisk vdisk spare verify virtual disk volume volume mapping WBI web-browser interface (WBI) Unified LUN Provisioning. A MSA2012sa storage system feature that makes all volumes in the system accessible to hosts through all host ports on both controllers. ULP incorporates Asymmetric Logical Unit Access (ALUA) extensions. Universal Time. A modern time system related to the conventional Greenwich Mean Time (GMT) used for time zones. Uninterruptible Power Supply. Abbreviation for virtual disk. A disk drive that is marked as a spare to support automatic data rebuilding after a disk drive associated with a virtual disk fails. For a vdisk spare to take the place of another disk drive, it must be at least equal in size to the failed disk drive and all of the virtual disks dependent on the failed disk drive must be redundant-RAID 1, 10, 3, 5, 6, or 50. A process that checks the integrity of the redundant data on faulttolerant virtual disks. For RAID 3, 5, 6, and 50, the verify process recalculates the parity of data stripes in each of the virtual disk's RAID stripe sets and compares it with the stored parity. For RAID 1 and 10, the verify process checks for mirror mismatches. The number of inconsistencies found, which can indicate a failing drive, is reported in the event log. For MSA2000 Family storage systems, a set of disk drives that share a RAID level and drive type, and across which host data is spread for redundancy or performance. A logical subdivision of a virtual disk. Multiple LUNs can be assigned to the same volume, one for each host port given access to the volume. See also standard volume. The process by which volume permissions (read only, read/write, or none) and LUNs are assigned to a host port. See SMU. See SMU. 274 HP StorageWorks 2000 Family Modular Smart Array CLI reference guide • May 2008