A SERVICE OF

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Contents 3
About this guide 7
Intended audience 7
Disk arrays 7
Related documentation 7
Conventions 8
Getting help 8
HP technical support 9
HP storage website 9
HP authorized reseller 10
Revision history 11
1 Overview 13
Continuous data availability 14
Nondisruptive service and upgrades 15
Connectivity 16
Fibre Channel connectivity 16
ESCON connectivity 17
FICON connectivity 17
iSCSI connectivity 18
Data integrity 19
Summary of features 21
2 XP128 Hardware 25
General safety guidelines 26
Physical components 28
Control panel 31
Emergency power-off 36
Normal operations 38
Contents