Jeg er rimeligt sikker på at en 532 IKKE understøtter RAID expansion og/eller RAID level migration.
Grund: 532 er en lavpris udgave af 5300 controlleren. Lavpris udgaverne understøtter IKKE write cache, da de ikke understøtter write cache backup battery. Det er derfor de er billigere.
her er overview:
http://h18004.www1.hp.com/products/servers/proliantstorage/arraycontrollers/smartarray532/index.htmlfølgende er sakset fra Q&A's
Q11. Does the Smart Array 532 support write-back cache?
A11. No, Compaq believes that data integrity is the most important feature of any of our array controller products. Write-back cache is vulnerable to power drops. With higher-end Compaq array controllers (e.g., the Smart Array 5300 family), write-back cache is protected by a unique removable battery backed cache daughter board. Since this is a costly feature to implement, standard with higher end array controllers, the Smart Array 532 does not support battery backed write-back cache.
Hvis du læser overview på SA5300:
http://h18004.www1.hp.com/products/servers/proliantstorage/arraycontrollers/smartarray5300/index.htmlvil du finde dette:
Battery-backed cache protects cached data in the event of a power outage, server failure or controller failure, and redundant batteries take that protection even further.
Online Management Features: Online Capacity Expansion, Online RAID Level Migration, Online Stripe Size Migration, Online Spares (Global), User Selectable Read/Write cache, User Selectable Expand and Rebuild Priority.
Så hvis man vælger at spare penge, så får man jo også lidt mindre.