Digital Equipment EK-SFXXS-SG-003 User manual


DECarray Service Guide
EK–SFXXS–SG–003
Digital Equipment Corporation

Second Edition, May 1992
Third Edition, June 1993
The information in this document is subject to change without notice and should not
be construed as a commitment by Digital Equipment Corporation. Digital Equipment
Corporation assumes no responsibility for any errors that may appear in this document.
Copyright © Digital Equipment Corporation 1993
All Rights Reserved.
Printed in U.S.A.
The postpaid Reader’s Comment Card included in this document requests the user’s
critical evaluation to assist in preparing future documentation.
The following are trademarks of Digital Equipment Corporation: DEC, DECUS, DSSI,
KFMSA, KFQSA, MicroVAX, MicroVAX II, MicroVAX 3xxx, MicroVMS, MSCP, PDP, Q-
BUS, TMSCP, UNIBUS, VAX, VAX 4000, VAX 6000, VAX 9000, VAXserver 3xxx, VMS,
XMI, and the DIGITAL logo.
All other trademarks and registered trademarks are the property of their respective
holders.

Contents
About This Guide ix
1 Introduction
1.1 DECarray Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
1.2 Storage Enclosure Overview . . . . . . . . . . . . . . . . . . . . . . . . . 1–6
1.3 Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–13
2 Theory of Operation
2.1 Overview ........................................ 2–1
2.2 SF3x Series Storage Enclosure . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.2.1 DSSINodeID .................................. 2–2
2.2.2 SF3x Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
2.2.2.1 Through-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
2.2.2.2 Split-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
2.2.3 Front Panel Controls, Labels, and Indicators . . . . . . . . . . . 2–6
2.2.3.1 Operator Control Panel (OCP) . . . . . . . . . . . . . . . . . . . . 2–8
2.2.3.2 DC Power Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
2.2.4 Rear Panel Controls and Indicators . . . . . . . . . . . . . . . . . . 2–11
2.3 SF7x Series Storage Enclosure . . . . . . . . . . . . . . . . . . . . . . . 2–14
2.3.1 DSSINodeID .................................. 2–14
2.3.2 SF7x Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–17
2.3.2.1 Through-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–17
2.3.2.2 Split-Bus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–17
2.3.3 Front Panel Controls, Labels, and Indicators . . . . . . . . . . . 2–18
2.4 Service Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–19
iii

iv Contents
3 Troubleshooting
3.1 Subsystem Fault Verification . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
3.2 FaultIsolation.................................... 3–2
3.2.1 Troubleshooting the DECarray . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.1.1 Introduction.................................. 3–5
3.2.1.2 Configuration Verification . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.2 Troubleshooting the Storage Enclosure . . . . . . . . . . . . . . . 3–6
3.2.2.1 Introduction.................................. 3–6
3.2.2.2 Configuration Verification . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.2.3 Optional Fault Isolation Steps with the DSSI Bus Meter . 3–7
3.3 Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8
4 DECarray FRU Removal and Replacement
4.1 Doors........................................... 4–1
4.2 PowerController .................................. 4–4
4.3 DSSI Interconnect Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–7
5 SF3x Storage Enclosure FRU Replacement
5.1 Warm Swap of Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–5
5.1.1 Obtaining Current Disk ISE Parameters . . . . . . . . . . . . . . 5–6
5.1.2 Warm Swap and Repair Procedures . . . . . . . . . . . . . . . . . . 5–10
5.1.3 Restoring the Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–14
5.1.4 Testing the Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–17
5.1.5 Mounting the Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–19
5.2 Replacing the Operator Control Panel . . . . . . . . . . . . . . . . . . 5–19
5.3 Replacing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 5–20
5.4 Replacing the Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 5–22
5.5 Replacing the Transition Module . . . . . . . . . . . . . . . . . . . . . . 5–25
5.6 Replacing the Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–27
5.7 Cable Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . 5–28
5.7.1 Replacing the AC Power Cord . . . . . . . . . . . . . . . . . . . . . . 5–29
5.7.2 Replacing the OCP to TM Cable . . . . . . . . . . . . . . . . . . . . 5–31
5.7.3 Replacing the Power Harness . . . . . . . . . . . . . . . . . . . . . . 5–34
5.7.4 Replacing the Internal DSSI Cables . . . . . . . . . . . . . . . . . . 5–36
5.8 Replacing the DC Switch Module . . . . . . . . . . . . . . . . . . . . . . 5–39

Contents v
5.9 Postrepair Checkout and Power-Up . . . . . . . . . . . . . . . . . . . . 5–41
5.9.1 From the Rear of the Storage Array . . . . . . . . . . . . . . . . . 5–41
5.9.2 From the Front of the Storage Array . . . . . . . . . . . . . . . . . 5–42
6 SF7x Storage Enclosure FRU Replacement
6.1 Warm Swap of Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–4
6.1.1 Obtaining Current Disk ISE Parameters . . . . . . . . . . . . . . 6–5
6.1.2 Warm Swap and Repair Procedures . . . . . . . . . . . . . . . . . . 6–9
6.1.3 Restoring the Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–19
6.1.3.1 HDA Replaced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–19
6.1.3.2 Drive Module Replaced . . . . . . . . . . . . . . . . . . . . . . . . . 6–20
6.1.3.3 Restoring the Disk ISE Parameters . . . . . . . . . . . . . . . . 6–21
6.1.3.4 Testing the Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–23
6.1.3.5 Mounting the Disk ISE . . . . . . . . . . . . . . . . . . . . . . . . . 6–25
6.2 ReplacingtheOCP................................. 6–26
6.3 Replacing the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 6–29
6.4 Replacing the Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 6–32
6.5 Replacing the Transition-Termination Module . . . . . . . . . . . . 6–35
6.6 Replacing the Drive DC Power Switch . . . . . . . . . . . . . . . . . . 6–38
6.7 Cable Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . 6–42
6.7.1 Replacing the AC Power Cord . . . . . . . . . . . . . . . . . . . . . . 6–43
6.7.2 Replacing the OCP to TTM Cable . . . . . . . . . . . . . . . . . . . 6–45
6.7.3 Replacing the Power Harness . . . . . . . . . . . . . . . . . . . . . . 6–48
6.7.4 Replacing the OCP Cables . . . . . . . . . . . . . . . . . . . . . . . . . 6–53
6.7.5 Replacing the Internal DSSI Cables . . . . . . . . . . . . . . . . . . 6–57
6.8 Postrepair Checkout and Power-Up . . . . . . . . . . . . . . . . . . . . 6–64
6.8.1 From the Rear of the Storage Array . . . . . . . . . . . . . . . . . 6–64
6.8.2 From the Front of the Storage Array . . . . . . . . . . . . . . . . . 6–66
A Recommended Spare Parts

vi Contents
B DECarray Cabling Information
B.1 Single-System Configurations for DECarray with SF7x
Enclosures ....................................... B–1
B.2 DSSI VAXcluster Configurations . . . . . . . . . . . . . . . . . . . . . . B–16
B.3 Stripe Set Configurations with SF7x Enclosures . . . . . . . . . . B–28
B.4 DECarray Configurations with SF3x Enclosures in
Through-BusMode................................. B–29
B.5 DECarray Configurations with SF3x Enclosures in Split-Bus
Mode ........................................... B–36
Glossary
Index
Examples
5–1 SHOWDEVICE................................... 5–6
5–2 SHOWCLUSTER ................................. 5–7
5–3 SETHOST/DUP................................... 5–8
5–4 ANALYZE/SYSTEM................................ 5–9
5–5 PARAMS Dialog Restoring Disk ISE Parameters . . . . . . . . . . 5–15
5–6 RunningDRVTST ................................. 5–17
6–1 SHOWDEVICE................................... 6–5
6–2 SHOWCLUSTER ................................. 6–6
6–3 SETHOST/DUP................................... 6–7
6–4 ANALYZE/SYSTEM................................ 6–8
6–5 PARAMS Dialog Restoring Disk ISE Parameters . . . . . . . . . . 6–22
6–6 RunningDRVTST ................................. 6–24
Figures
1–1 Front View of the DECarray . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
1–2 SF3x Series Storage Enclosure . . . . . . . . . . . . . . . . . . . . . . . 1–7
1–3 SF7x Series Storage Enclosure . . . . . . . . . . . . . . . . . . . . . . . 1–8
2–1 SF3x DSSI Node ID Switches . . . . . . . . . . . . . . . . . . . . . . . . 2–5
2–2 Front View of the SF3x Storage Enclosure (with cover
removed) ........................................ 2–7

Contents vii
2–3 SF3x Operator Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . 2–8
2–4 Rear Panel of the Storage Enclosure (with cover removed) . . 2–12
2–5 SF7x Operator Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . 2–16
4–1 Removing DECarray Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3
4–2 PowerController .................................. 4–6
5–1 SF3x Storage Enclosure Front View . . . . . . . . . . . . . . . . . . . . 5–3
5–2 SF3x Storage Enclosure Rear View . . . . . . . . . . . . . . . . . . . . 5–4
5–3 DiskISERemoval ................................. 5–11
5–4 Disk ISE Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–12
5–5 Removing and Replacing the Fan Assembly . . . . . . . . . . . . . . 5–23
5–6 Removing and Replacing the Transition Module . . . . . . . . . . 5–26
5–7 AC Power Cord Retainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–30
5–8 Removing and Replacing the OCP to TM Cable . . . . . . . . . . . 5–33
6–1 Storage Enclosure Exploded View . . . . . . . . . . . . . . . . . . . . . 6–3
6–2 Storage Enclosure Front View . . . . . . . . . . . . . . . . . . . . . . . . 6–10
6–3 Removing and Replacing a Disk ISE . . . . . . . . . . . . . . . . . . . 6–12
6–4 Disk ISE Skid Plate and Wedges . . . . . . . . . . . . . . . . . . . . . . 6–13
6–5 Separating the HDA from the Drive Module . . . . . . . . . . . . . 6–15
6–6 Disconnecting the Flex Circuit . . . . . . . . . . . . . . . . . . . . . . . . 6–16
6–7 Storage Enclosure OCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–19
6–8 OCPMSCPSwitch................................. 6–20
6–9 RemovingtheOCP................................. 6–28
6–10 Storage Enclosure Rear View . . . . . . . . . . . . . . . . . . . . . . . . . 6–30
6–11 Removing and Replacing the Fan Assembly . . . . . . . . . . . . . . 6–33
6–12 Removing and Replacing the Transition-Termination Module 6–36
6–13 Removing and Replacing the Drive DC Power Switches . . . . 6–40
6–14 AC Power Cord Retainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–44
6–15 Removing and Replacing the OCP to TTM Cable . . . . . . . . . . 6–47
6–16 Storage Enclosure Power Harness . . . . . . . . . . . . . . . . . . . . . 6–50
6–17 Removing the Acoustic Panels . . . . . . . . . . . . . . . . . . . . . . . . 6–56
6–18 Enclosure Internal DSSI Cables . . . . . . . . . . . . . . . . . . . . . . . 6–60
6–19 Enclosure Internal DSSI Cables (cont.) . . . . . . . . . . . . . . . . . 6–61
6–20 Enclosure Internal DSSI Cables (cont.) . . . . . . . . . . . . . . . . . 6–62
6–21 Storage Enclosure Rear View . . . . . . . . . . . . . . . . . . . . . . . . . 6–65
6–22 Storage Enclosure Front View . . . . . . . . . . . . . . . . . . . . . . . . 6–67

viii Contents
Tables
1–1 DECarray Storage Positions . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1–2 DECarray Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1–3 SF3x Storage Enclosure Specifications . . . . . . . . . . . . . . . . . . 1–9
1–4 SF7x Storage Enclosure Specifications . . . . . . . . . . . . . . . . . . 1–11
1–5 Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–13
2–1 SF3x Factory-set DSSI Node IDs . . . . . . . . . . . . . . . . . . . . . . 2–2
2–2 DSSI Node ID Switch Settings for SF3x Storage Enclosure . . 2–3
2–3 Operator Control Panel Functions . . . . . . . . . . . . . . . . . . . . . 2–9
2–4 Summary of Rear Panel Control/Indicator Functions . . . . . . . 2–11
2–5 DSSI ID Switch Settings (DSSI VAXcluster) . . . . . . . . . . . . . 2–14
2–6 DSSI ID Switch Settings (Single-System and Stripe Set) . . . . 2–15
3–1 Subsystem Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . 3–2
3–2 DECarray and Storage Enclosure Checklist . . . . . . . . . . . . . . 3–3
3–3 Storage Enclosure Troubleshooting Chart . . . . . . . . . . . . . . . 3–8
3–4 Disk ISE Fault Codes (for SF7x only) . . . . . . . . . . . . . . . . . . 3–11
4–1 DSSI Label Color Codes (Single-System Configurations) . . . . 4–8
4–2 DSSI Label Color Codes (DSSI VAXcluster Configurations) . . 4–9
4–3 DSSI Label Color Codes (Stripe Set Configurations) . . . . . . . 4–10
5–1 DRVTST Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–18
6–1 Disk ISE OCP Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . 6–9
6–2 DRVTST Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–25
A–1 DECarray Recommended Spare Parts . . . . . . . . . . . . . . . . . . A–1
A–2 SF3x Recommended Spare Parts . . . . . . . . . . . . . . . . . . . . . . A–2
A–3 SF7x Recommended Spare Parts . . . . . . . . . . . . . . . . . . . . . . A–2
B–1 Cabling SF7x in DECarray Single-System Configurations . . . B–2
B–2 Cabling SF7x in DECarray DSSI VAXcluster Configurations B–17
B–3 Cabling SF7x in DECarray Stripe Set Configurations . . . . . . B–28
B–4 Cabling SF3x in DECarray Through-Bus Configurations . . . . B–29
B–5 Cabling SF3x in DECarray Split-Bus Configurations . . . . . . . B–36

AboutThisGuide
This guide provides information and procedures for servicing the SF7x
series storage enclosures in DECarray cabinets.
Chapter 1, Introduction, contains a product description and
specifications for the SF7x series storage enclosures and the DECarray
cabinets.
Chapter 2, Theory of Operation, describes the normal operation of the
SF7x series storage enclosures and the DECarray cabinets. This chapter
includes service guidelines.
Chapter 3, Troubleshooting, contains information for isolating
and troubleshooting faulty FRUs internal to the SF7x series storage
enclosures and the DECarray cabinets.
Chapter 4, DECarray FRU Removal and Replacement, contains the
step-by-step procedures for removing and replacing DECarray cabinet
FRUs.
Chapter 5, SF3x Storage Enclosure FRU Replacement, contains the
step-by-step procedures for removing and replacing FRUs internal to the
SF3x series storage enclosures and the DECarray cabinets.
Chapter 6, SF7x Storage Enclosure FRU Replacement, contains the
step-by-step procedures for removing and replacing FRUs internal to the
SF7x series storage enclosures and the DECarray cabinets.
The appendices provide a list of recommended spare parts, and cabling
information for the DECarray cabinets and SF-series storage enclosures.
ix