HP StorageWorks XP48 - Disk Array User manual

HP SureStore E Disk Array XP512
HP SureStore E Disk Array XP48
H
Owner’s Guide

Notice
© 2000, Hewlett-Packard Company.
Order number A5951-90900
E1100 A5951-96170
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2

3
Revision History 7
Updates 8
1 About the HP SureStore E Disk Array XP512 and XP48 9
Continuous Data Availability 10
Nondisruptive Service and Upgrades 11
Connectivity 12
Fibre Channel Connectivity 12
ESCON Connectivity 13
Data Integrity 14
Comparing the XP512 to the XP48 16
Websites 18
2 The HP SureStore E Disk Array XP512 Hardware 19
General Safety Guidelines 20
Physical Components 22
Disk Control Frame 24
Control Panel 24
Service Processor 25
Disk Array Frames 26
Available Disk Drives 26
RAID Options 26
Remote Console PC (optional) 27
Control Panel 30
CONTENTS

4 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
UNIT EMERGENCY POWER OFF 35
Normal Operations 37
Powering Off the Disk Array 38
UNIT EMERGENCY POWER OFF 38
Planned Power-Off 39
Recovering from a Power Outage to the Disk Array 40
Specifications 42
Temperature 42
Humidity 42
Mechanical Vibration 43
AC Line Voltage 43
3 The HP SureStore E Disk Array XP48 Hardware 45
General Safety Guidelines 46
Physical Components 48
Control Panel 51
UNIT EMERGENCY POWER OFF 55
Normal Operations 57
Powering Off the Disk Array 58
UNIT EMERGENCY POWER OFF 58
Planned Power-Off 59
Recovering from a Power Outage to the Disk Array 60
Specifications 62
Temperature 62
Humidity 62
Mechanical Vibration 63
AC Line Voltage 63
Website 64

Contents 5
4 The HP SureStore E Disk Array XP Family of Optional
Software 65
Web-Based Console 66
HP SureStore E Command View XP 66
Security 67
HP SureStore E Secure Manager XP 67
Core Solutions 68
HP SureStore E Cache LUN XP 68
HP SureStore E LUN Configuration Manager XP 68
HP SureStore E Remote Control XP 68
Disaster Recovery 70
HP SureStore E Continuous Access XP 70
HP SureStore E Continuous Access Extension XP 70
High Availability 71
HP SureStore E Business Copy XP 71
Failover and Load Balancing 72
HP SureStore E Auto LUN XP 72
HP SureStore E Auto Path XP 72
Performance Monitoring 73
HP SureStore E Performance Manager XP 73
HP SureStore E Performance Advisor XP 73
Network Management 74
HP SureStore E OpenView/ITO SPI 74
Mainframe Solutions 75
HP SureStore E Resource Manager XP 75
HP SureStore E Data Exchange XP 75
5 Troubleshooting 77
Monitoring and Reporting 78
Troubleshooting Flow Diagram 79

6 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
6 Regulatory Statements 81
FCC EMC Statement (USA) 82
IEC Statement (Worldwide) 83
EMC Statement (Canada) 84
Spécification ATI Classe A (France) 85
VCCI EMC Statement (Japan) 86
BSMI EMC License Number and Statement (Taiwan) 87
XP512 87
XP48 87
Harmonics Conformance (Japan) 88
German Noise Declaration 89
Laser Safety 90
Declaration of Conformity 91
XP512 Declaration of Conformity 92
XP48 Declaration of Conformity 93
A Raid Technology 95
Using RAID0/1 96
Understanding RAID3 98
Using RAID5 99
Configuring Dynamic Spare Disks 103
Glossary 107
Index 117

7
Revision History
June 1, 2000 Original release for the HP SureStore E Disk Array
XP512
November 7, 2000 Addition of the HP SureStore E Disk Array XP48

8 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
Updates
For the most current information about HP SureStore E XP products, visit
the support web sites at:
www.hp.com/support/xp256
www.hp.com/support/xp512
www.hp.com/support/xp48
For information about product availability, configuration, and connectivity,
consult your HP account representative.

9
1
ABOUT THE HP SURESTORE E DISK
ARRAY XP512 AND XP48
Your new disk array is a refinement of the successful HP SureStore E Disk
Array XP256 from HP. It provides reliable and secure data protection
featuring redundant circuitry and RAID storage options for data security.
The disk array also supports multiple operating systems, platforms, and
RAID groups. The advantages include:
•continuous data availability
•nondisruptive service and upgrades
•connectivity
•scalability
•data integrity

10 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
Continuous Data Availability
The XP family of disk arrays are the first RAID disk arrays to provide truly
continuous data availability. They are designed for nonstop operation and
continuous access to all user data.
HP XP512 and XP48 disk arrays have no single point of component failure,
which enables uninterrupted access to data.
The disk array has component and function redundancy, providing full fault
tolerance for disk array microprocessors, control storage, control and data
buses, power supplies, and cooling fans. The disk array can sustain multiple
component failures and still continue to provide full access to your stored
data.
While access to your data is never compromised, the failure of a key
component can cause a temporary reduction in disk array performance.

About the HP SureStore E Disk Array XP512 and XP48 11
Nondisruptive Service and Upgrades
Monitoring software detects failed disk drives or internal hardware and
notifies the HP Stress Free Central support center automatically so an HP
service representative can replace the faulty hardware. There is no need to
be concerned with user serviceable components. Only an HP Service
Representative should open the cabinets.
All hardware subassemblies can be removed, serviced, repaired, or
replaced nondisruptively during disk array operation. All microcode
upgrades can be performed during normal disk array operations, using your
disk array’s built-in service processor (SVP) or the facilities of the host.
Alternate paths can be set by host failover software or alternate Fibre
Channel paths.

12 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
Connectivity
To connect the XP512 or the XP48 disk array to a host system, these two
types of connections are available:
•Fibre Channel
•ESCON (Enterprise System Connection)
Fibre Channel Connectivity
XP512
The XP512 supports a maximum of four pairs of channel adapters that can
support up to 32 Fibre Channel ports. Each port is assigned a unique target
ID (TID) and can support 256 logical units (LUs). Your disk array can
support up to 8,192 LUNs attached through the Fibre Channel, which
provides data transfer rates up to 100 MB/sec. The disk array can support
Fibre Channel arbitrated loop (FC-AL) and Fabric Fibre Channel
topologies.
XP48
The XP48 supports a maximum of three pairs of channel adapters that can
support up to 24 Fibre Channel ports. Each port is assigned a unique TID
and can support 256 LUs. Your disk array can support up to 6,144 LUNs
attached through the Fibre Channel, which provides data transfer rates up to
100 MB/sec. The disk array can support FC-AL and Fabric Fibre Channel
topologies.

About the HP SureStore E Disk Array XP512 and XP48 13
ESCON Connectivity
XP512
The XP512 supports a maximum of four pairs of channel adapters that can
support 32 ESCON ports.
XP48
The XP48 supports a maximum of three pairs of channel adapters that can
support 24 ESCON ports.

14 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
Data Integrity
The highest levels of data integrity are provided by HP disk arrays. This is
accomplished by using RAID technologies, along with redundant hardware
throughout your disk array. Refer to the Appendix for more information
about RAID technology. Below is a list of the hardware features that allow
the XP512 and XP48 to achieve their high availability and data integrity:
•RAID0/1, RAID5
•mirrored write cache
•dual channel adapters (CHAs) and array control processors (ACPs)
•dual and concurrently active data and control paths through the disk
array
•split power domains on internal data paths
•hot-pluggable boards
•hot-pluggable fans, power supplies, and controllers
•upgradable online firmware
Following are some of the software features/products that complement your
disk array hardware to ensure that the array meets your requirements for
high reliability:
•HP SureStore E support
“Phone Home”capability to multidisciplinary “Stress-Free”Center
advanced remote diagnostics
full-solution (Host-SAN-Storage) support

About the HP SureStore E Disk Array XP512 and XP48 15
•Full software and solution integration
local and remote mirroring for online backup and disaster recovery
(HP SureStore E Business Copy XP and Continuous Access XP)
security for multiple-serve consolidation (HP SureStore E Secure
Manager XP)
zero downtime backup (HP OmniBack, Exchange, Oracle, or SAP)
centralized resource management (HP SureStore E SAN Manager
LM/DM, Performance Manager XP, Performance Advisor XP, and
Auto LUN XP)
easy to use interface to access your disk array resources (HP SureStore
E Remote Control XP)
•I/O path failover and load balancing (HP SureStore E AutoPath XP)
To obtain updates to the software, go to the following websites:
www.hp.com/support/xp512
www.hp.com/support/xp48

16 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
Comparing the XP512 to the XP48
The XP512 and the XP48 are members of the same product family. The
main differences are in configuration capacities. Except as limited by the
configuration limitations, the XP512 and XP48 provide identical
functionality.
There are some additional differences. For example, the XP48 ACP is an
integral part of the XP48 and cannot be removed or interchanged. The
following table describes the differences between the XP512 and XP48
disk arrays.
Table 1. Comparing the XP512 to the XP48
Feature XP512 XP48
Power Single-phase or 3-phase Single-phase only
DKC/DKU One DKC
Up to 6 DKUs Single cabinet unit only (no expansion)
Maximum hard
disk drives 512 48
Maximum spare
disk drives 16 4
Maximum parity
groups/subsystem 126 11
Maximum disk
drive capacity 37 TB 3.5 TB
Maximum cache 32 GB 16 GB
Cache expansion
board Yes No
(continued)

About the HP SureStore E Disk Array XP512 and XP48 17
Available hard
disk drives 73GB 10K rpm Fibre Channel disk drive
47GB 10K rpm Fibre Channel
disk drive
18 GB 10K rpm Fibre Channel
disk drive
73GB 10K rpm Fibre
Channel disk drive
18 GB 10K rpm Fibre
Channel disk drive
Max shared
memory 1.28GB 1.0GB
ACP pairs 4 1
CHIP pairs 4 3
Configuration
disk XP512-specific XP48-specific
SVP code XP512-specific XP48-specific
RAID level RAID 0/1 (3D + 1P)
RAID 5 (2D + 2D) RAID 0/1 (3D + 1P) RAID 5 (2D + 2D)
Maximum LDEV
#4096 4096
Available LUNs 8192 6144
Maximum LU
#/port 256 256
Table 1. Comparing the XP512 to the XP48 (continued)
Feature XP512 XP48

18 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
Websites
For the most current information about the XP family of disk arrays, visit
these websites:
www.hp.com/support/xp256
www.hp.com/support/xp512
www.hp.com/support/xp48

19
2
THE HP SURESTORE E DISK ARRAY
XP512 HARDWARE

20 HP SureStore E Disk Array XP512/XP48: Owner’s Guide
General Safety Guidelines
Read the following safety guidelines carefully and follow them when you
work with your XP512 disk array.
•Remember that the maintenance of your machine must be done only
by trained and qualified HP field engineers. Only an HP Service
Representative can power off the disk array.
•Please read and follow the safety guidelines and procedures in this
manual and any of your related manuals.
•In this manual and on the machine, hazard warnings are provided to
aid you in preventing or reducing the risk of death, personal injury, or
product damage. Understand and follow these hazard warnings fully.
•The hazard warnings that appear on the warning labels on the machine
or in the manual have one of the following alert headings consisting of
an alert symbol and a signal word, “Warning”or “Caution”:
Warning
This indicates a potentially hazardous situation which, if not avoided, can
result in death or serious injury.
The alert symbol shown left precedes every signal word for hazard
warnings and appears in safety-related descriptions in the manual.
Caution
This indicates a hazardous situation which, if not avoided, will or can result
in serious damage of product or loss of data.
•The signal word “NOTICE”is used to present warnings that are not
directly related to personal injury hazards.
•When warning labels become dirty or start peeling off, replace them.