User`s guide

Contents

Preface ............................................................ xv

1 Introduction to HS Array Controllers

1.1 Overview of HS Array Controllers ............................... 1–1

1.2 Housing for HS Array Controllers ............................... 1–2

1.3 Physical Description of HS Array Controllers ...................... 1–2

1.3.1 HSJ30 and HSJ40 Array Controllers Physical Description . . ....... 1–2

1.3.2 HSD30 Array Controller Physical Description ................... 1–4

1.3.3 HSZ Array Controller Physical Description ..................... 1–6

1.4 Controller Host Interface Protocols .............................. 1–7

1.5 Addressing Storage Within the Subsystem . ....................... 1–8

1.5.1 Controller Storage Addressing ............................... 1–8

1.5.2 Host Storage Addressing . . . ................................ 1–10

1.5.3 Host Storage Addressing (HSZ Array Controllers) . ............... 1–11

1.6 HSJ Array Controller Dual Data Link ............................ 1–12

1.7 HS Array Controller Features . . ................................ 1–12

1.8 Controllers and Cache Modules Speciﬁcations ...................... 1–14

1.9 Ordering HS Array Controller Cache Modules ...................... 1–15

1.10 StorageWorks Controller Subsystem Products ...................... 1–16

1.10.1 Controller Shelf . . ........................................ 1–17

1.10.2 BA350–SB SBB Shelf ...................................... 1–18

1.11 MSCP and TMSCP Protocols (to Hosts) ........................... 1–19

1.12 SCSI Protocol (to Hosts) ....................................... 1–19

1.13 SCSI Protocol (to Devices) ..................................... 1–19

2 Controller Technical Description

2.1 HS Array Controller Hardware Functional Overview . ............... 2–1

2.1.1 Policy Processor Hardware . . ................................ 2–2

2.1.2 Bus Exchangers . . ........................................ 2–2

2.1.3 CI, DSSI, or SCSI–2 Interfaces (Host Ports) .................... 2–3

2.1.4 SCSI–2 Device Ports (Buses) ................................ 2–3

2.1.5 Read Cache Module ....................................... 2–3

2.1.6 Write-Back Cache Module . . ................................ 2–3

2.1.6.1 Battery Discharging .................................... 2–4

2.1.6.2 Battery Charging ...................................... 2–5

2.1.7 Operator Control Panel .................................... 2–6

2.1.7.1 HSJ40 and HSJ30 Array Controller OCP ................... 2–6

2.1.7.2 HSD30 Array Controller OCP ............................ 2–7

2.1.7.3 HSZ Array Controller OCP .............................. 2–8

2.1.8 Program Card (PCMCIA) . . . ................................ 2–9

2.1.9 Nonvolatile Memory (NVMEM) .............................. 2–10

2.1.10 Maintenance Terminal Port . ................................ 2–10

iii