Compaq HSZ80 Cacheups, Capacity CREATEPARTITION, 5-49INITIALIZE, Chunksize Initialize, Lostdata

write-through caching, 1–21Cache policies

fault-tolerance for write-back caching, 1–22Cache, setting flush timer, 5–93

CACHE_FLUSH_TIMER SET controller, 5–93

CACHE_UPS

SET controller, 5–93Caching techniques

general description, 1–20read caching, 1–20read-ahead caching, 1–20write-back caching, 1–21write-through caching, 1–21

CAPACITY CREATE_PARTITION, 5–49INITIALIZE, 5–63

Change volume serial number utility. See CHVSN utility

Changing switches devices, 3–42initialize, 4–18storagesets, 3–42unit, 4–18

Charging diagnostics battery hysteresis, 1–31general description, 1–31

Chunk size, 3–51

choosing for RAIDsets and stripesets, 3–51controlling stripesize, 3–51

maximum for RAIDsets, 3–54

using to increase data transfer rate, 3–53using to increase request rate, 3–52using to increase write performance, 3–54

CHUNKSIZE, 3–51

INITIALIZE, 5–63

I–3

Chunksize, setting storageset size, 5–63CHVSN utility

general description, 1–17CHVSN, running, 5–86CLCP utility

general description, 1–16CLCP, running, 5–86CLEAR_ERRORS CLI, 5–35CLEAR_ERRORS controller

INVALID_CACHE, 5–36data-retention-policy, 5–36DESTROY_UNFLUSHED_DATA, 5–36NODESTROY_UNFLUSHED_DATA, 5–36

CLEAR_ERRORS device-nameUNKNOWN, 5–38

CLEAR_ERRORS unit-numberLOST_DATA, 5–40

CLI definition, 5–2overview, 5–2

CLI commands abbreviating commands, 5–3ADD DISK, 5–7

ADD MIRRORSET, 5–11ADD PASSTHROUGH, 5–16ADD RAIDSET, 5–19ADD SPARESET, 5–23ADD STRIPESET, 5–24ADD UNIT, 5–27CLEAR_ERRORS CLI, 5–35CLEAR_ERRORS controller

INVALID_CACHE, 5–36CLEAR_ERRORS device-name

UNKNOWN, 5–38CLEAR_ERRORS unit-number

LOST_DATA, 5–40

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide