Specifications

Contents
Figures............................ix
Tables ............................xi
Safety and environmental notices .................xiii
Product recycling ........................xiii
Disposing of products ......................xiii
About this guide ........................xv
Who should use this guide.....................xv
Summary of changes.......................xv
Prerequisites .........................xvi
Publications ..........................xvi
The IBM TotalStorage ESS library .................xvi
Other IBM publications ....................xviii
Other non-IBM publications ...................xxi
Web sites ..........................xxii
How to send your comments ...................xxii
Chapter 1. Introduction ......................1
Finding attachment information in this guide...............1
Overview of the IBM TotalStorage Enterprise Storage Server (ESS) ......2
Host systems that the ESS supports .................3
SCSI-attached open-systems hosts .................4
Fibre-channel (SCSI-FCP) attached open-systems hosts .........4
ESCON-attached S/390 and zSeries hosts ..............5
FICON-attached S/390 and zSeries hosts ..............6
General information about attaching to an open-systems host with SCSI adapters 7
Cable interconnections .....................7
Cable lengths .........................9
SCSI initiators and I/O queuing ..................9
Connecting the SCSI cables ...................9
Handling electrostatic discharge-sensitive components .........10
Checking the attachment ....................10
Solving attachment problems...................10
LUN affinity .........................11
Targets and LUNs .......................11
FlashCopy and PPRC restrictions .................11
SCSI host system limitations ...................11
General information about attaching to an open-systems hosts with
fibre-channel adapters .....................12
Fibre-channel architecture ....................13
Fibre-channel cables and adapter types...............15
Fibre-channel node-to-node distances ...............15
LUN affinity .........................15
Targets and LUNs.......................15
FlashCopy and PPRC restrictions for open-systems hosts ........16
LUN access modes ......................16
Fibre-channel storage area networks (SANs) .............17
Chapter 2. Attaching to a Compaq host ...............19
Attaching with SCSI adapters ...................19
Attachment requirements ....................19
© Copyright IBM Corp. 1999, 2001 iii
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