IBM Enterprise Storage Server 2105 E10, Enterprise Storage Server 2105 E20, Enterprise Storage Server 2105 F10, Enterprise Storage Server 2105 F20 Introduction And Planning Manual
IBM Enterprise Storage Server
™
Introduction and Planning Guide
2105 Models E10, E20, F10, and F20
IBM
GC26-7294-05
IBM Enterprise Storage Server
™
Introduction and Planning Guide
2105 Models E10, E20, F10, and F20
IBM
GC26-7294-05
Note!
Before using this information and the product it supports, read the information in “Notices” on page 95.
Sixth Edition (December 2000)
This edition replaces GC26–7294–04.
|
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© Copyright International Business Machines Corporation 1999, 2000. All rights reserved.
US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
Contents
Figures ...........................vii
Tables ............................ix
Safety and environmental notices .................xi
Product recycling ........................xi
Disposing of products.......................xi
About this guide .......................xiii
Who should use this guide ....................xiii
Frequently used terms ......................xiii
Publications ..........................xvi
The ESS product library ....................xvi
Ordering publications .....................xvii
Related publications......................xvii
Web sites...........................xix
Summary of Changes .....................xxi
Chapter 1. Introduction......................1
IBM Enterprise Storage Server overview ................1
Host systems supported by the ESS ................2
Web interfaces ........................4
Service interface........................9
Fibre-channel connection ....................10
Introducing the IBM Subsystem Device Driver ............12
IBM Enterprise Storage Server availability features ...........14
Redundant array of independent disks implementation .........14
Non-RAID disk group support ..................15
Predictive failure analysis ....................15
Failover protection ......................15
Sparing...........................15
Fibre-channel support .....................15
Cache ...........................16
Nonvolatile storage ......................16
Concurrent maintenance ....................16
FlashCopy .........................16
Peer-to-Peer Remote Copy ...................17
FlashCopy and PPRC restrictions for open system hosts ........18
UNIX, Windows NT, and Windows 2000 availability features .......18
System/390 availability features..................19
Descriptions and comparisons of the IBM Enterprise Storage Server models 20
Power differences between models ................21
Features ..........................21
Logical subsystems .......................23
Chapter 2. Planning the physical configuration ............25
United States-government orders ..................25
Power features .........................25
Power outlets ........................25
Uninterruptible power system...................26
Power supply input voltage ...................26
Power cables ........................26
© Copyright IBM Corp. 1999, 2000 iii
Remote support features ....................26
Extension cords .......................28
Adapter features ........................29
SCSI host adapters ......................30
Fibre-channel host adapters ...................30
ESCON host-adapters .....................30
Device adapters .......................30
Reserved loops........................31
Memory capacity features .....................31
Physical configuration features and options ..............31
DDM cages and 8 packs ....................32
Physical configuration options ..................32
ESS storage on demand ....................34
Feature codes and requirements for attaching 7133 drawers ........36
Connection hardware ......................37
SCSI host cables .......................37
Fibre-channel cables......................38
ESCON host cables ......................38
Remote-power-control attachment cables ..............39
Language for the operator panel ..................39
Configuration changes ......................40
Optional one-year warranty ....................40
Licensed internal code and optional software ..............40
Parallel Access Volumes (PAV) ..................40
ESS Copy Services ......................40
Guidelines for enabling and using ESS Web Copy Services .......41
Planning ESS Copy Services configuration .............45
IBM Subsystem Device Driver ..................46
Chapter 3. Installation planning ..................49
Equipment requirements .....................49
Engineering changes.......................50
Site requirements for the ESS ...................50
Service clearance and floor-loading requirements for the ESS ......55
Planning for installation of the ESSNet ...............57
Power requirements .......................58
Input voltages and frequencies ..................58
Power consumption and environmental information ..........58
Cooling requirements .....................59
Operating environment ......................59
Power on environment .....................59
Power off and storage environments ................60
Recommended storage points or ranges ..............60
Energy saving law.......................60
Power cable and power connector requirements ............60
Power cable connectors ....................61
Outlet power for the extension cord ................63
Remote service connection ...................63
Chapter 4. Planning for communication ...............65
Communication overview .....................65
Guidelines for completing the Communication Resources work sheet .....65
Communications for ESS Web Copy Services .............73
Disaster Recovery Considerations for Copy Services ..........76
Chapter 5. Planning data migration ................79
iv ESS Introduction and Planning
UNIX, Windows NT, Windows 2000 and OS/400 host systems .......79
Replacing existing storage.....................80
Reformatting existing disk drive modules ..............80
524-byte sector format .....................80
Open system host views of the IBM Enterprise Storage Server .......81
OS/400 operating systems ...................81
UNIX systems ........................81
System/390 hosts ........................82
Data migration planning ....................82
IBM data migration and other services ...............82
Appendix A. Communication Resources work sheet ..........85
Appendix B. Communication Resources (ESS Web Copy Services) work
sheet ...........................89
Appendix C. Adding and Removing Drawers and Racks ........91
Drawer Placement .......................91
7133 Model 20 Requirements ..................91
Model D40 Requirements ....................92
7133 Model 020 and D40 Requirements for 2105 Installations .......93
Notices ...........................95
Trademarks ..........................95
Electronic emission notices ....................96
Federal Communications Commission (FCC) statement .........96
Industry Canada compliance statement ...............97
European community compliance statement .............97
Japanese Voluntary Control Council for Interference (VCCI) class A statement 98
Korean government Ministry of Communication (MOC) statement .....98
Taiwan class A compliance statement ...............98
IBM agreement for licensed internal code ...............98
Actions you must not take ....................99
Statement of Limited Warranty...................100
Part 1 – General Terms ....................100
Part 2 - Country-unique Terms..................102
Glossary ..........................107
Index ............................119
Contents v
vi ESS Introduction and Planning
Figures
1. Models E10, E20, F10, and F20; front and rear views..................2
2. Expansion enclosure, front and rear views ......................2
3. Connecting to ESS Web Copy Services server groups .................8
4. Point-to-point topology .............................10
5. Switched fabric topology ............................11
6. Arbitrated loop topology ............................12
7. Multipath connections between a host server and ESS LUNs ..............13
8. Reserved loops ...............................31
9. Cable cutout and door clearance for Models E10, F10, E20, and F20 ...........53
10. Cable cutout and door clearance for Model 100 ...................54
11. ESS Web Copy Services configuration with DNS ...................74
© Copyright IBM Corp. 1999, 2000 vii
viii ESS Introduction and Planning
Tables
1. Power differences between ESS models ......................21
2. IBM Enterprise Storage Server feature comparison ..................21
3. IBM Enterprise Storage Server physical features ...................22
4. Ultra-high-performance configuration .......................33
5. High-performance configurations .........................33
6. Capacity configurations ............................34
7. High-performance Configurations with 18.2 GB DDMs .................35
8. Capacity Configurations with 36.4 GB DDMs ....................36
9. ESCON cable connectors ...........................38
10. Remote-power-control attachment cable connectors ..................39
11. ESS dimensions and weights ..........................51
12. Cable cutout dimensions (maximum size) ......................52
13. Clearance and floor-loading requirements......................55
14. ESS input voltages and frequencies ........................58
15. Power consumption and environmental information for the ESS .............58
16. Operating extremes with the power on .......................59
17. Recommended operating points with the power on ..................59
18. Recommended operating ranges with the power on ..................60
19. Recommended temperatures and humidity with the power off ..............60
20. Recommended temperatures and humidity while in storage ...............60
21. ESS power cable connectors ..........................61
22. Communication Resources work sheet.......................85
23. Enable ESS Web Copy Services work sheet ....................89
24. Enable ESS Web Copy Services without DNS work sheet................89
© Copyright IBM Corp. 1999, 2000 ix
x ESS Introduction and Planning
Safety and environmental notices
This section contains information about:
v Safety notices that are used in this guide
v Environmental guidelines for this product
To find the translated text for a danger or caution notice:
1. Look for the identification number at the end of each danger or caution notice.
In the following examples, look for the numbers 1000 and 1001.
DANGER
A danger notice indicates the presence of a hazard that has the
potential of causing death or serious personal injury.
1000
CAUTION:
A caution notice indicates the presence of a hazard that has the potential
of causing moderate or minor personal injury.
1001
2. Find the number that matches in the
GC26-7229.
IBM Storage Solution Safety Notices
book,
Product recycling
This unit contains recyclable materials. Recycle these materials at your local
recycling sites. Recycle the materials according to local regulations. In some areas,
IBM provides a product take-back program that ensures proper handling of the
product. Contact your IBM representative for more information.
Disposing of products
This unit may contain batteries. Remove and discard these batteries, or recycle
them, according to local regulations.
© Copyright IBM Corp. 1999, 2000 xi
xii ESS Introduction and Planning
About this guide
This publication introduces the IBM®Enterprise Storage Server™(ESS) and lists
the features you can order. It also gives guidelines for the following tasks:
v Planning for installation
v Planning communications
v Planning data migration
Who should use this guide
This publication is for storage administrators, system programmers, and
performance and capacity analysts.
Frequently used terms
The following terms appear in this publication to describe the IBM Enterprise
Storage Server (ESS) and its configuration. Also see the “Glossary” on page 107 for
additional terms and definitions.
Term Definition
array An arrangement of related disk drive modules
(DDMs) that you have assigned to a group. Also
referred to as a rank. For the ESS, an array is a
group of up to eight DDMs.
cluster A partition of a storage server that is capable of
performing all functions of a storage server. When a
cluster fails in a multiple-cluster storage server, the
cluster that remains in the configuration takes over
the processes of that cluster.
®
controller image A System/390
you access with an ESCON
more controller images exist in each controller.
Each image appears to be an independent
controller, but all images share a common set of
hardware facilities. The ESS can emulate 3990-3,
3990-6, or 3990-3 TPF controller images.
count key data (CKD) A System/390 term for a logical device that
specifies the format of the logical data units on the
device. The logical data unit is a track that contains
one or more records, consisting of a count field, a
key field (optional), and a data field (optional).
device adapter A physical component of a storage controller that
attaches to one or more interfaces. It enables
communication between the interfaces and the
associated storage devices.
destage The process of writing modified storage from cache
to the disk drive module (DDM).
term for a logical subsystem that
®
I/O interface. One or
disk drive module (DDM) The primary, nonvolatile storage medium that you
© Copyright IBM Corp. 1999, 2000 xiii
use for any host data that is stored within a storage
server. The number and type of storage devices
within a storage server may vary.
Enterprise Systems Connection architecture (ESCON)
1. An ESA/390 computer-peripheral interface. The
I/O interface uses ESA/390 logical protocols
over a serial interface.
2. A set of IBM products and services that provide
a dynamically connected environment within an
enterprise.
ESCON See
Enterprise Systems Connection architecture
.
ESCON channel A channel that has an ESCON channel-to-controller
I/O interface that uses optical cables as a
transmission medium.
ESCON host systems System/390 hosts that you attach to the ESS with
an ESCON adapter. Such host systems run on
Multiple Virtual Storage (MVS), virtual machine
(VM), VSE, or TPF operating systems.
fabric In fibre-channel technology, a routing structure,
such as a switch, receives addressed information
and routes to the appropriate destination. A fabric
can consist of more than one switch. When multiple
fibre-channel switches are interconnected, they are
cascaded
.
fibre-channel Fibre-channel is an architecture that supports
full-duplex communication over a serial interface
that configures attached units to a communication
fabric.
The ESS supports fibre-channel communications for
open system hosts through its fibre-channel
adapters.
fixed-block (FB) devices An architecture for logical devices that specifies the
format of the logical data units on the device. The
logical data unit is a block. All blocks on the device
are the same size (fixed size); the subsystem can
access them independently. This is the required
format of the logical data units for host systems that
you attach with a small computer system interface
(SCSI) or fibre-channel interface.
gigabyte (GB) When referring to hard-disk-drive capacity, GB
host adapter A physical component in a storage server that
IBM Enterprise Storage Server (ESS)
xiv ESS Introduction and Planning
means 1 000 000 000 bytes; total user-accessible
capacity may vary depending on operating
environment.
enables the server to attach to one or more host
I/O interfaces.
™
A member of the Seascape
product family of
storage servers and attached storage devices (disk
drive modules). The ESS provides integrated
caching and RAID support for the disk drive
modules (DDMs). The DDMs are attached through
a serial storage architecture (SSA) interface.
logical device A pointer to a logical volume on a storage server.
The pointer enables a host system to access the
logical volume. For the ESS, the logical device
represents a logical volume.
logical subsystem (LSS) The LSS is a logical “container” for RAID-5 arrays,
disk groups, and the volumes that are located on
those arrays or disk groups. One SSA Adapter
accesses an LSS primarily. One or more logical
subsystems can exist on the ESS. In general, the
ESS associates a given set of devices with only
one logical subsystem.
For System/390 hosts, a logical subsystem
represents a controller.
logical unit The Small Computer System Interface (SCSI) term
for a logical disk drive.
logical unit number (LUN) LUN is a SCSI term for the field in an identifying
message that is used to select a logical unit on a
given target.
logical volume The storage medium associated with a logical disk
drive. A logical volume typically resides on one or
more storage devices. For the ESS, you define this
unit of storage; the logical volume resides on a
RAID-5 array, and is spread over6+Por7+P
drives, where P is parity. A logical volume can also
reside on a non-RAID array on one storage device.
For CKD, you can define the logical volume size by
the device emulation mode (3390 or 3380 track
format). For UNIX
Microsoft Windows 2000
fixed-block format, the size is 0.5 GB to 224 GB.
For AS/400
®
, Microsoft®Windows NT®, and
®
operating systems in the
®
operating systems in the fixed-block
format, the size is 4.19, 8.59, 17.55, or 36 GB.
®
Note: The AIX
operating system views a logical
volume as a logical disk or a hard disk
(hdisk).
SCSI See
small computer system interface
.
SCSI host systems Identifies host systems that you attach to the ESS
with a SCSI interface. Such host systems run on
UNIX, OS/400, Windows NT, Windows 2000, or
Novell NetWare operating systems.
SCSI ID A unique identifier (ID) assigned to a SCSI device
that is used in protocols on the SCSI interface to
identify or select the device. The number of data
bits on the SCSI bus determines the number of
available SCSI IDs. A wide interface has 16 bits,
with 16 possible IDs. A SCSI device is either an
initiator or a target.
service personnel Individuals or a company that you have authorized
to service your ESS. This term also refers to a
About this guide xv
service provider, a service representative, or an
IBM service support representative (SSR). An IBM
SSR installs your ESS.
Small Computer System Interface
An American National Standards Institute (ANSI)
standard for a logical interface to computer
peripherals and for a computer-peripheral interface.
The interface uses a SCSI logical protocol.
staging To move data from an offline or low-priority device
to an online or higher priority device is called
staging.
storage server A unit that manages attached storage devices and
provides access to the storage or storage-related
functions for one or more attached hosts.
terabyte (TB) When referring to hard-disk-drive capacity, TB
means 1 000 000 000 000 bytes; total
user-accessible capacity may vary depending on
operating environment.
volume Refers to a
Publications
This section describes the ESS library and publications for related products. It also
gives ordering information for these publications.
The ESS product library
The ESS is an IBM Seascape architecture-based product. See the following
publications for more information on the ESS:
v
IBM Enterprise Storage Server Introduction and Planning Guide
This guide introduces the product and lists the features you can order. It also
provides guidelines on planning for the installation and configuration of the ESS.
IBM Enterprise Storage Server User’s Guide
v
|
|
This guide provides instructions for setting up and operating the ESS and for
analyzing problems.
IBM Enterprise Storage Server Host Systems Attachment Guide
v
This book provides guidelines for attaching the ESS to your host system and for
migrating from SCSI to fibre-channel attachment.
v
IBM Enterprise Storage Server SCSI Command Reference
This book describes the functions of the ESS. It provides reference information
for UNIX and Application System/400
commands, sense bytes, and error recovery procedures.
v
IBM Enterprise Storage Server System/390 Command Reference
This book describes the functions of the ESS and provides reference information
for System/390 hosts, such as channel commands, sense bytes, and error
recovery procedures.
IBM Storage Solutions Safety Notices
v
This book provides translations of the danger notices and caution notices that
IBM uses in ESS publications.
IBM Enterprise Storage Server Web Interface User’s Guide
v
logical
®
(AS/400®) hosts, such as channel
, GC26-7229
volume.
, GC26-7294
, SC26-7295
, SC26-7296
, SC26-7297
, SC26-7298
, SC26-7346
xvi ESS Introduction and Planning
This book provides instructions for using the IBM StorWatch™Enterprise Storage
Server Web interfaces, ESS Specialist and ESS Web Copy Services.
IBM Enterprise Storage Server Configuration Planner
v
This book provides work sheets for planning the logical configuration of the ESS.
This book is not available in hardcopy. This book is only available on the
following Web site:
www.storage.ibm.com/hardsoft/products/ess/refinfo.htm
IBM Enterprise Storage Server Quick Configuration Guide
v
This booklet provides flow charts for using the StorWatch Enterprise Storage
Server Specialist. The flow charts provide a high-level view of the tasks the IBM
service support representative performs during initial logical configuration. You
can also use the flow charts for tasks that you might perform during modification
of the logical configuration.
The hardcopy of this booklet is a 9-inch × 4-inch fanfold.
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IBM Enterprise Storage Server Service Guide
v
This service guide is for the service support representatives who are trained to
install and repair the IBM 2105 Models E10/E20 and F10/F20. This service guide
is broken into three volumes that contain the following chapters:
– Volume 1: Information, Start, and Isolation
– Volume 2: Repair, Install, and Configure
– Volume 3: Locations, Service Terminal, Codes, Power
, SY27–7605
, SC26-7353
, SC26-7354
Ordering publications
|
All of the publications that are listed in “The ESS product library” on page xvi are
available on a compact disc that comes with the ESS, unless otherwise noted. You
can also order a hardcopy of each publication. For publications on compact disc,
order
All the customer documents listed above are available on the following ESS Web
site:
Related publications
The following related publications are also available:
v
DFSMS/MVS®Version 1 Release 5 Software Support for the IBM Enterprise
Storage Server
This book describes the changes you need to make to operating systems for
System/390 hosts to support the ESS functions.
v
IBM Storage Area Network Data Gateway Installation and User’s Guide, 2108
Model G07
This book introduces the IBM Storage Area Network (SAN) Data Gateway and
provides the procedures for installing and using it.
v
IBM Subsystem Device Driver
This book describes how to use the IBM Subsystem Device Driver on
open-systems hosts to enhance performance and availability on the ESS. The
Subsystem Device Driver creates redundant paths for shared logical unit
numbers. The Subsystem Device Driver permits applications to run without
interruption when path errors occur. It balances the workload across paths, and it
transparently integrates with applications.
IBM Enterprise Storage Server Customer Documents
www.storage.ibm.com/hardsoft/products/ess/refinfo.htm
, SC26-7318
, SC26-7304
, SK2T-8770.
About this guide xvii
This publication is not available in hardcopy. However, it is available on the
compact disc that is delivered with your ESS. You can also view and copy this
publication from the Web site:
www.ibm.com/storage/support/techsup/swtechsup.nsf/support/sddupdates/
DFSMS Advanced Copy Services
v
, SC35-0355
This book provides detailed information about Copy Services functions such as
Peer-to-Peer Remote Copy (PPRC), Extended Remote Copy (XRC), and
FlashCopy.
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OS/390 MVS System Messages Volume 1 (ABA - ASA)
v
This publication helps you understand and use IBM Advanced Copy Services
functions on an IBM System/390. It describes two dynamic-copy functions and
several point-in-time copy functions. These functions provide backup and
recovery of data should a disaster occur to your data center. The dynamic-copy
functions are Peer-to-Peer Remote Copy and Extended Remote Copy, and are
known collectively as remote copy. FlashCopy, SNAPSHOT
Copy are the point-in-time copy functions.
v
IBM Enterprise Storage Server
, SG24-5465
, SG24-5465
®
, and Concurrent
This book, from the IBM International Technical Support Organization, introduces
the IBM Enterprise Storage Server (ESS) and provides an understanding of its
benefits. It also describes in detail the architecture, hardware and functions of the
ESS.
Implementing the IBM Enterprise Storage Server
v
, SG24-5420
This book, from the IBM International Technical Support Organization, can help
you install, tailor, and configure the IBM Enterprise Storage Server (ESS) in your
environment.
IBM Enterprise Storage Server Performance Monitoring and Management
v
,
SG24-5656.
This book, from the IBM International Technical Support Organization, provides
guidance on the best way to configure, monitor, and manage your Enterprise
Storage Server (ESS) to ensure optimum performance.
v
IBM System/360™and System/370™I/O Interface Channel to Control Unit
Original Equipment Manufactures’ Information
, GA22-6974
This publication provides a description of the interface between System/360,
System/370, and System/390 channels and controllers that are designed to
operate with this interface. This publication covers the parallel I/O interface. It
does not cover the interface between the controller and the I/O device, nor does
it cover the ESCON-I/O interface for the System/390.
This publication is for designers of programs and equipment that are associated
with parallel I/O interfaces and for service personnel that maintain the equipment.
Anyone concerned with the functional details of this interface will also find it
useful.
Fibre Transport Services (FTS) Direct Attach, Physical and Configuration
v
Planning
, GA22-7234
This publication provides information about fibre-optic and ESCON-trunking
systems.
v
DFSMS/MVS Version 1 Remote Copy Guide and Reference
, SC35-0169
This publication provides guidelines for using remote copy functions with
System/390 hosts.
Implementing ESS Copy Services on S/390
v
, SG24-6480
This publication tells you how to install, customize and configure Copy Services
on IBM Enterprise Storage Server on a S/390 host system. Copy Services
xviii ESS Introduction and Planning
Web sites
functions include, Peer-to-Peer Remote Copy, Extended Remote Copy,
FlashCopy, and Concurrent Copy. This publication describes the functions,
pre-requisites and co-requisites. The publication also describes how to implement
each of the functions into your environment.
Implementing ESS Copy Services on UNIX and Windows NT
v
This publications tells you how to install, customize, and configure Copy Services
on an IBM Enterprise Storage Server on the UNIX and Windows NT host system.
Copy Services functions include, Peer-to-Peer Remote Copy, FlashCopy,
Extended Remote Copy, and Concurrent Copy. Extended Remote Copy and
Concurrent Copy are not available for UNIX and Windows NT host systems.
They are only available on System/390. This publication describes the functions,
pre-requisites and co-requisites. The publications also shows you how to
implement each of the functions into your environment. This publications also
shows how to implement these solutions in an HACMP cluster.
NUMA-Q ESS Integration Release Notes
v
This publication contains information about special procedures and limitations
involved in running ESS with Copy Services on a NUMA-Q host system. It is not
available through IBM ordering systems. Contact your IBM NUMA-Q sales
representative to obtain this document
For general information about IBM storage servers, see the following Web site:
v www.storage.ibm.com/hardsoft/products/ess/ess.htm
, Part Number 1003-80094-01
, SG24-5757
To view and print the IBM Enterprise Storage Server publications, see the following
Web site:
v www.storage.ibm.com/hardsoft/products/ess/refinfo.htm
To get current information about the host system models, operating systems, and
adapters that the ESS supports, see the following Web site:
v www.storage.ibm.com/hardsoft/products/ess/supserver.htm
For information about the IBM Subsystem Device Driver, see the following Web site:
www.ibm.com/storage/support/techsup/swtechsup.nsf/support/sddupdates/
To attach a SAN or host system that uses an industry-standard, fibre-channel
arbitrated loop (FC-AL) through the IBM 2108 SAN Data Gateway Model G07, see
the following Web site:
www.storage.ibm.com/hardsoft/products/sangateway/sangateway.htm
For information about the latest updates to Copy Services components XRC,
PPRC, SnapShot, Concurrent Copy, and FlashCopy for S/390, see the following
Web site:
www.storage.ibm.com/software/sms/sdm/sdmtech.htm
About this guide xix
xx ESS Introduction and Planning
Summary of Changes
Revision bars in the left margin indicate technical changes to this publication. Minor
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editorial changes are not marked. This edition includes the following major changes:
v Support for the new IBM System/390 eserver zSeries 900 (z900 server)
v Feature codes for a SCSI cable with an additional interposer
v Feature codes for step-ahead storage planning
v Modification to the ESS weight information
v Additional information about the environment for storing an ESS
v Modifications to the information about planning for ESS Copy Services
v New fields for the Communication Resources work sheet:
– Support Catcher Telephone Number
– Enable ESS Copy Services commands for IBM System/390 volumes
v A new work sheet for Network Communications for ESS Copy Services
© Copyright IBM Corp. 1999, 2000 xxi
xxii ESS Introduction and Planning
Chapter 1. Introduction
This book provides an overview of the IBM Enterprise Storage Server (ESS) and
lists the features that you can order. It also provides guidelines for these tasks:
v Installation planning
v Communications planning
v Data migration planning
For guidelines and work sheets for logical configuration, see the
Storage Server Configuration Planner
http://www.storage.ibm.com/hardsoft/products/ess/refinfo.htm
IBM Enterprise Storage Server overview
This section provides an overview of the IBM Enterprise Storage Server (ESS) and
describes its interfaces and components.
The ESS is a member of the Seascape family of storage servers. The ESS
provides integrated caching and support for redundant arrays of independent disks
(RAID) for the disk drive modules (DDMs). The DDMs are attached through a serial
storage architecture (SSA) interface.
The ESS uses peripheral component interconnect (PCI) architecture that is
designed to provide high availability and to avoid single points of failure.
|
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The ESS Models E10 and E20 provide 6 GB of cache. The ESS Models F10 and
F20 provide 8 GB of cache; an optional 16 GB of cache; and faster PCI
architecture.
The ESS provides the following features:
v RAID 5 or non-RAID disk groups
v Fast SSA drives
v Fast reduced instruction-set computer (RISC) processors
v A fault-tolerant system
v Sharing of storage between open-systems hosts
®
v OS/390
v Instant copy solutions
v Disaster recovery solutions
parallel input/output (I/O) interface
IBM Enterprise
on the product Web site:
Models E20 and F20, with expansion enclosures, can provide up to 11 terabytes
(TB) of storage capacity, with a choice of 9.1, 18.2, or 36.4 GB DDMs. When IBM
refers to DDM capacity, TB means 1 000 000 000 000 bytes. For processor
storage, real and virtual, a TB equals 2⁴⁰ or 1 099 511 627 766 bytes. Total
user-accessible capacity may vary depending on the operating environment.
See Figure 1 on page 2 and Figure 2 on page 2 for illustrations of the ESS models
and the expansion enclosure. ESS Models E10 and F10 do not support an
expansion enclosure.
© Copyright IBM Corp. 1999, 2000 1
Front view
Figure 1. Models E10, E20, F10, and F20; front and rear views
Rear view
Each ESS expansion enclosure has dual power cables and redundant power. The
redundant power system allows both the storage controller and DDMs to continue
normal operation when one of the power cables is inactive. Redundancy also
ensures continuous data availability.
Figure 2. Expansion enclosure, front and rear views
ESS Models E10 and F10 support a maximum of 64 DDMs. The minimum
configuration for a Model E10 or F10 base enclosure is 16 DDMs. ESS Models E20
and F20 support a maximum of 128 DDMs. With the expansion enclosure, Models
E20 and F20 support a maximum of 384 DDMs.
Host systems supported by the ESS
The ESS provides heterogeneous data storage that you can share between
workloads for open-systems hosts. The following sections contain information about:
v Open-systems hosts with small computer system interface (SCSI) adapters
2 ESS Introduction and Planning
Front view
Rear view
v Open-systems hosts with fibre-channel adapters
Note: Because of possible interactions between host bus adapters in switched
configurations, IBM recommends that you establish zones that contain a
single port attached to a host bus adapter with the desired number of ports
attached to ESS. You can establish the zones by using either the hard (by
port) or soft (by WWN) zoning method. You can configure ports that are
attached to the ESS in more than one zone, which allows multiple host bus
adapters to share access to the ESS fibre-channel ports. Shared access to
an ESS fibre-channel port might be from host platforms that use a
combination of supported host bus adapter types and operating systems.
SCSI host systems
Each SCSI adapter has two ports. With SCSI adapters you can connect up to 128
host systems when you serially interconnect them. The ESS supports the following
host systems for SCSI attachment:
v Hewlett Packard with the HP-UX operating system
®
v IBM RISC System/6000
system
v IBM AS/400 with the IBM Operating System/400 (OS/400) Version 3 or Version 4
v Personal computer servers with Microsoft Windows NT 4.0 operating systems
v Personal computer servers with Microsoft Windows 2000 operating systems
v Sun with the Solaris operating system
v Data General with the DG UX operating system
v Personal computer servers with Novell Netware
and RISC System/6000 SP with the IBM AIX operating
See the following ESS Web site for details about types, models, adapters, and the
operating systems that the ESS supports for SCSI-attached host systems:
www.storage.ibm.com/hardsoft/products/ess/supserver.htm
Fibre-channel host systems
Each ESS fibre-channel adapter has one port. With fibre-channel adapters you can
connect up to 127 host systems. See “Fibre-channel connection” on page 10 for
information on the fibre-channel protocols that the ESS supports. The ESS supports
the following host systems for fibre-channel attachment:
v IBM RISC System/6000 and RISC System/6000 SP with the IBM AIX operating
system
v Personal computer servers with Microsoft Windows NT 4.0 operating systems
v Personal computer servers with Windows 2000 operating systems
v IBM NUMA-Q with DYNIX/ptx
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v Hewlett Packard with the HP-UX operating system
v Personal computer servers with Novell NetWare
v Sun with the Solaris operating system
See the following ESS Web site for details about types, models, adapters, and the
operating systems that the ESS supports for fibre-channel attached host systems:
www.storage.ibm.com/hardsoft/products/ess/supserver.htm
Chapter 1. Introduction 3
System/390 host systems
With ESCON adapters, the ESS supports up to 32 connections for System/390 host
systems, each with up to 64 logical paths. IBM attaches an ESS to a System/390
server for fibre-channel connection (FICON
9032 Model 005 ESCON Director.
The ESS supports the following operating systems:
v OS/390
v Multiple Virtual Storage/Enterprise Storage Architecture (MVS/ESA
v Virtual Machine/Enterprise Storage Architecture (VM/ESA®)
v Virtual Storage Extended/Enterprise Storage Architecture (VSE/ESA™)
v Transaction Processing Facility (TPF)
The ESS also supports the following operating systems for the new IBM eserver
zSeries 900 (z900 server):
v z/OS Version 1 Release 1
v OS/390 Version 2 Release 6 or higher
v VM
– z/VM Version 3 Release 1
– VM/ESA Version 2 Release 2
– VM/ESA Version 2 Release 3
– VM/ESA Version 2 Release 4
v VSE/ESA Version 2 Release 3 and higher
v Transaction Processing Facility (TPF) Version 4 Release 1
™
) through the bridge card on the IBM
™
)
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Web interfaces
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See the preventive service planning (PSP) bucket for operating system support and
planning information that includes APARs and programming temporary fixes (PTFs).
For additional information about the changes you need to make to System/390
hosts to support ESS functions, see
Support for the IBM Enterprise Storage Server
DFSMS/MVS Version 1 Release 5 Software
.
For information about the latest updates to Copy Services components XRC,
PPRC, SnapShot, Concurrent Copy, and FlashCopy for S/390, see the following
Web site:
www.storage.ibm.com/software/sms/sdm/sdmtech.htm
This section describes the Web security, the ESSNet, and the Web interfaces for
ESS. The Web interfaces include:
v StorWatch Enterprise Storage Server Specialist (ESS Specialist)
v StorWatch Enterprise Storage Server Web Copy Services (ESS Web Copy
Services) that supports Web Interfaces to manager peer-to-peer remote copy or
FlashCopy.
v StorWatch Expert, an optional software product
See your IBM Field office for information about how to order StorWatch Expert. See
IBM Enterprise Storage Server Web Interface User’s Guide
the
which provides
detailed descriptions of the ESS Specialist and the ESS Web Copy Services
interfaces and how to use them.
4 ESS Introduction and Planning
Web connection security
You connect to the ESS through the ESSNet.
All data that is sent between the ESS and the Web browser through the ESSNet is
encrypted to avoid unauthorized modification of configuration commands.
Passwords and authorization levels protect access to the interface.
You control user access by assigning levels of access and passwords.
IBM Enterprise Storage Server Network
The IBM Enterprise Storage Server Network (ESSNet) is a private network resident
on an IBM workstation. It is a required feature. IBM installs the ESSNet when they
install your IBM Enterprise Storage Server. The ESSNet hardware includes:
v The IBM workstation (a PC) and monitor
v An external Ethernet hub that provides cable connections from the ESSNet to the
IBM Enterprise Storage Server. The hub speed is 10 megabits per second
(Mbps) or 10/100 megabits per second, depending on your system.
Note: You can attach your Ethernet LAN to the external hub. You provide any
hardware that is needed for this connection.
v A modem and a modem expander that allow your ESS to communicate between
you and IBM
Note: The feature code for Remote Service Support includes the modem and
modem expander.
The ESSNet includes the following software on the workstation:
v Windows NT 4.0 operating system
v Browser software (Microsoft Internet Explorer and Netscape Navigator) that
allows access to the ESS Specialist
v The ESSNet application for installation and configuration. The ESSNet
workstations includes an HTML page that provides links to all ESS connected to
the ESSNet for Specialist access.
The ESSNet provides the following features:
v Support for multiple ESSs. A hub with 16 ports will support 7 ESSs.
v Connectivity between your ESS and the ESS Specialist Web interface. The
ESSNet provides browser software at the appropriate level for this connection.
v Improvements in Web performance compared to previous Web browser
connections.
v Faster network connectivity and elimination of network setup problems when
using previous Web connections.
v Ethernet connectivity through an Ethernet hub to the ESSNet.
v An independent platform that facilitates installation and configuration of the ESS.
v Software for maintenance and configuration.
IBM installs the ESSNet when they install your first IBM Enterprise Storage Server.
Accessing ESS Specialist and ESS Web Copy Services
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You access the IBM StorWatch Enterprise Storage Server Specialist (ESS
Specialist) from the ESSNet. The ESSNet includes browser software for this
access. You access ESS Web Copy Services from the ESS Specialist Navigation
frame.
Chapter 1. Introduction 5
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You can access ESS Specialist from your own workstation if you connect the
ESSNet into your intranet by using one of the ports on the ESSNet hub. If you use
your own workstation IBM recommends at least 128MB of memory in the
workstation. You can access the ESS Specialist by using a browser that is fully
enabled for Java(TM) 1.1.x. The ESS Specialist supports the following browsers:
v Netscape Navigator Version 4.04 or greater, which supports Windows NT and
Windows 95.
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Note: Version 4.04 requires Java 1.1 fixpack; later versions such as 4.5 may not
require this fixpack.For better web performance, IBM recommends using
Netscape Navigator Version 4.5.1 or greater.
v Microsoft Internet Explorer (MSIE) Version 4.0 or greater, which supports
Windows NT and Windows 95.
Note: Version 4.0 requires Service Pack 1.
The ESSNet PC is pre-loaded with current release levels of Microsoft Internet
Explorer and Netscape Navigator.
If you do not choose to attach ESSNet into your intranet, you can only access ESS
Specialist from a browser on the ESSNet workstation.
You must provide another network connection to the remote ESS through ESSNet
hubs for Copy Services support.
IBM updates ESS Specialist and ESS Copy Services through engineering changes
(ECs).
ESS Specialist
The ESS includes the ESS Specialist. The ESS Specialist is a Web-based interface
that allows you to configure the ESS.
From the Web interface, you can perform the following tasks:
v Monitor error logs
v View and change the configuration:
– Add or delete SCSI and fibre-channel host systems
– Configure SCSI host ports and fibre-channel host ports on the ESS
– Define controller images for System/390
– Define fixed-block (FB) and count-key-data (CKD) disk groups
– Add FB and CKD volumes
– Assign volumes to be accessible to more than one host system
– Change volume assignments
v Change and view communication resource settings, such as electronic mail
(e-mail) addresses and telephone numbers
v Authorize user access
With the ESS Specialist, you can view the following information:
v The external connection between a host system and an ESS port
v The internal connection of SCSI ports and fibre-channel ports to cluster 1 or
cluster 2
v The allocation of storage space to FB and CKD volumes
IBM updates the ESS Specialist through licensed internal code (LIC) updates.
6 ESS Introduction and Planning
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