HP 273914-B21 HP Smart Array Controller technology, 3rd edition - Page 1

HP Smart Array Controller technology technology brief, 3rd edition Abstract...3 Introduction...3 Storage trends...3 Meeting data storage requirements...4 High performance...4 PCI Express technology...4 SAS/SATA technology ...5 SAS-2 standard ...6 Mini SAS 4x cable connectors and receptacles 7 High-performance processor...7 Cache module benefits ...8 Read-ahead caching...8 Write-back caching ...8 Balanced cache size...9 RAID performance enhancements...9 Disk striping...9 Parity data...9 Background RAID creation...9 RAID 5 and RAID 6 read-modify-write 9 Striping across arrays ...10 RAID 1 load balancing ...10 Hardware versus software RAID 10 Smart Array performance...11 Data availability ...14 RAID support ...14 Stripe size migration ...14 RAID migration ...15 Drive roaming ...16 Mirror splitting and recombining...16 Online drive flash ...16 Recovery ROM ...16 Pre-Failure Warranty using S.M.A.R.T technology 16 Automatic data recovery with rapid rebuild technology 17 Online spare ...17 Dynamic sector repair ...18 ECC protection ...18 Battery-backed write cache ...18