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Hitachi Universal Storage Platform V/VM User and Reference Guide
Back-End Directors and Array Domains........................................................ 2-9
Hard Disk Drives...................................................................................... 2-11
Service Processor..................................................................................... 2-11
Power Supplies ........................................................................................ 2-12
Batteries ................................................................................................. 2-12
Control Panel and Emergency Power-Off Switch................................................ 2-13
Control Panel........................................................................................... 2-13
Emergency Power-Off Switch.................................................................... 2-15
Intermix Configurations................................................................................... 2-16
RAID-Level Intermix................................................................................. 2-16
Hard Disk Drive Intermix .......................................................................... 2-17
Device Emulation Intermix........................................................................ 2-17
Functional and Operational Characteristics ............................................. 3-1
RAID Implementation ....................................................................................... 3-2
Array Groups and RAID Levels .................................................................... 3-2
Sequential Data Striping ............................................................................. 3-4
LDEV Striping Across Array Groups.............................................................. 3-5
CU Images, LVIs, and LUs................................................................................. 3-7
CU Images ................................................................................................ 3-7
Logical Volume Images............................................................................... 3-7
Logical Units.............................................................................................. 3-8
Storage Navigator............................................................................................. 3-9
System Option Modes, Host Modes, and Host Mode Options .............................. 3-10
System Option Modes............................................................................... 3-10
Host Modes and Host Mode Options .......................................................... 3-21
Mainframe Operations..................................................................................... 3-22
Mainframe Compatibility and Functionality ................................................. 3-22
Mainframe Operating System Support........................................................ 3-22
Mainframe Configuration .......................................................................... 3-23
Open-Systems Operations............................................................................... 3-24
Open-Systems Compatibility and Functionality............................................ 3-24
Open-Systems Host Platform Support ........................................................ 3-25
Open-Systems Configuration..................................................................... 3-26
Battery Backup Operations.............................................................................. 3-27
Troubleshooting ................................................................................... 4-1
General Troubleshooting ................................................................................... 4-2
Service Information Messages ........................................................................... 4-3
Calling the Hitachi Data Systems Support Center................................................. 4-4