User`s guide

EK–SMCPO–UG. A01 iii
Contents
Revision Record
..............................................................................................ix
About This Guide
...........................................................................................xi
1 Product Overview
1.1 Product Description...............................................................................1–1
1.2 Pedestal Features...................................................................................1–4
1.3 Pedestal Cabinet....................................................................................1–4
1.4 Pedestal Components ............................................................................1–6
1.4.1 StorageWorks Building Blocks (SBBs)..............................................1–6
1.4.2 RAID Array Controller......................................................................1–6
1.4.3
Pedestal Power Supplies ....................................................................1–7
1.4.4
Uninterruptable Power Supply ...........................................................1–7
1.4.5
Environmental Monitor Unit (EMU)..................................................1–8
1.4.6
UltraSCSI Bus ...................................................................................1–9
1.5 Specifications......................................................................................1–12
2 RAID Array Controller
2.1 Controller Overview..............................................................................2–1
2.2 Controller Features................................................................................2–2
2.3 Controller Reset and LED Indicators.....................................................2–6
2.4 Flexible RAID Set Configuration ..........................................................2–7
2.5 Performance Enhancements ..................................................................2–8
2.5.1 Custom Components..........................................................................2–8
2.5.2 Efficient Write and Read Algorithms.................................................2–8
2.6 RAID Levels Supported ......................................................................2–10
2.6.1 RAID 0............................................................................................2–11
2.6.2 RAID 1............................................................................................2–13
2.6.3 RAID 0+1........................................................................................2–13
2.6.4 RAID 4............................................................................................2–15