Contents
1. Introduction .............................................................. 12
1.1 System Architecture ......................................................... 13
1.1.1 Ultra ATA/133 & SATA 1.0 Host Interface ....................... 13
1.1.2 Ultra 320 Host Interface .............................................. 13
1.1.3 Serial ATA ll Drive Interface ......................................... 13
1.2 RAID subsystem Controller Board ...................................... 14
1.2.1 Cache Memory Subsystem ........................................... 14
1.2.2 User Interface ............................................................. 14
1.2.3 Controller Firmware ..................................................... 15
1.3 RAID Concept .................................................................. 15
1.3.1 RAID Set .................................................................... 15
1.3.2 Volume Set ................................................................. 16
1.3.3 Easy of Use Features .................................................. 16
1.3.3.1 Instant Availability/Background Initialization ............. 16
1.3.3.2 Array Roaming ...................................................... 17
1.3.3.3 Online Capacity Expansion ...................................... 17
1.3.3.4 Online RAID Level and Stripe Size Migration .............. 19
1.3.3.5 Online Volume Expansion ......................................... 19
1.4 High availability ............................................................... 20
1.4.1 Global Hot Spares ....................................................... 20
1.4.2 Hot-Swap Disk Drive Support ........................................ 21
1.4.3 Auto Declare Hot-Spare ............................................... 21
1.4.4 Auto Rebuilding .......................................................... 21
1.4.5 Adjustable Rebuild Priority ............................................ 22
1.5 High Reliability ................................................................. 23
1.5.1 Hard Drive Failure Prediction ......................................... 23
1.5.2 Auto Reassign Sector ................................................... 23
1.5.3 Consistency Check ....................................................... 24
1.6 Data Protection ................................................................ 24
1.6.1 RECOVERY ROM .......................................................... 24
1.7 Understanding RAID ......................................................... 24
1.7.1 RAID 0 ....................................................................... 25
1.7.2 RAID 1 ....................................................................... 26
1.7.3 RAID 10 ..................................................................... 26
1.7.4 RAID 3 ....................................................................... 27
1.7.5 RAID 5 ....................................................................... 28
1.7.6 RAID 6 ....................................................................... 28
Summary of Contents for ARC-5030 Series
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