EMC Symmetrix DMX-3 Product Manual
EMC® Symmetrix
DMX-3
Product Guide
P/N 300-002-197
REV A09
EMC Corporation
Corporate Headquarters:
Hopkinton, MA 01748
1
-508-435-1000
www.EMC.com
-9103
®
Copyright © 2005-2008 EMC Corporation. All rights reserved.
Published December, 2008
EMC believes the information in this publication is accurate as of its publication date. The information is
subject to change without notice.
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REPRESENTATIONS OR WARRANTIES OF ANY KIND WITH RESPECT TO THE INFORMATION IN THIS
PUBLICATION, AND SPECIFICALLY DISCLAIMS IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
Use, copying, and distribution of any EMC software described in this publication requires an applicable
software license.
For the most up-to-date regulatory document for your product line, go to the Technical Documentation and
Advisories section on EMC Powerlink.
For the most up-to-date listing of EMC product names, see EMC Corporation Trademarks on EMC.com.
All other trademarks used herein are the property of their respective owners.
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EMC Symmetrix DMX-3 Product Guide
Contents
Warnings and Cautions.......................................................................... 17
Preface .................................................................................................... 21
Chapter 1 Introducing the Symmetrix DMX-3
Symmetrix DMX-3............................................................................ 26
Symmetrix DMX-3 configurations .......................................... 27
Symmetrix platform and Enginuity operating environment..... 29
Enginuity operating environment........................................... 29
EMC Solutions Enabler APIs ................................................... 30
Storage capacities and global memory requirements.................. 31
Storage capacities....................................................................... 31
Factors affecting storage capacity............................................ 31
Global memory requirements.................................................. 32
Performance features........................................................................ 33
Availability and integrity features.................................................. 35
Serviceability features ...................................................................... 37
Supported software applications.................................................... 38
Tiered Storage Optimization.................................................... 38
Storage management................................................................. 39
Symmetrix local and remote replication software solutions 39
Information mobility................................................................. 40
Hardware options............................................................................. 41
DMX-3 Silencer .......................................................................... 41
DMX-3 Silencer specifications ................................................. 42
DMX-3 systems securing kits................................................... 43
EMC Symmetrix DMX-3 Product Guide
3
Contents
Chapter 2 Symmetrix DMX-3 Hardware
Major components............................................................................ 46
Symmetrix DMX-3 and component scaling attributes......... 50
DMX-3 configuration rules and guidelines........................... 51
Symmetrix DMX-3 architecture...................................................... 53
DMX-3 block diagram............................................................... 53
DMX-3 point-to-point message matrix................................... 55
DMX-3 midplane slot configuration....................................... 56
DMX-3 slot configuration......................................................... 57
Symmetrix channel connectivity and host integration ............... 59
Channel connectivity ................................................................ 59
Symmetrix channel configurations......................................... 60
Supported Fibre Channel interfaces ....................................... 60
Supported cluster hosts............................................................ 60
Mainframe serial channel interfaces....................................... 60
Supported mainframe operating systems.............................. 61
Fibre Channel disk subsystem........................................................ 62
Disk drives.................................................................................. 62
Link control cards (LCC).......................................................... 63
Power supply/ cooling module.............................................. 63
Symmetrix DMX disk drive capacities................................... 64
Symmetrix DMX-3 logical volume capacities ....................... 66
Configuration rules for vault devices..................................... 68
Symmetrix DMX disk drive emulations ................................ 68
Deleting (and then adding) devices online............................ 69
Open system disk emulation ................................................... 69
IBM CKD DASD disk emulation............................................. 71
Channel, disk, and global memory directors ............................... 75
Channel director connectivity ................................................. 75
Channel director descriptions.................................................. 76
Fibre Channel directors (front-end)........................................ 77
Fibre Channel adapters (front-end) ........................................ 78
ESCON channel directors......................................................... 79
Multiprotocol Channel Directors ............................................ 80
FICON channel director ........................................................... 80
Gigabit Ethernet (GigE) remote directors.............................. 81
GigE IPv4/v6 (IPsec capable) director................................... 82
iSCSI channel directors............................................................. 82
Fibre Channel disk directors (back-end)................................ 83
Global memory directors.......................................................... 83
Global memory director configuration .................................. 85
Symmetrix DMX-3 power subsystems.......................................... 86
System bay power subsystem components........................... 86
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EMC Symmetrix DMX-3 Product Guide
Storage bay power subsystem components........................... 87
DMX-3 communications and environmental control.................. 89
Communications control functions......................................... 89
Environmental control functions............................................. 90
Channel attachments ........................................................................ 92
FICON channel interface connections .................................... 92
ESCON channel interface connections ................................... 95
Mainframe serial channel extenders ....................................... 97
Open systems Fibre Channel interface connections ............. 98
Chapter 3 Symmetrix DMX-3 Input/Output Operations
Symmetrix DMX-3 operation ........................................................ 102
Symmetrix global memory management............................. 103
Elements of a Symmetrix I/O operation ..................................... 105
I/O response time: Mainframe environment....................... 105
I/O response time: Open systems environment ................. 106
Symmetrix I/O operations ..................................................... 106
Read operations........................................................................ 108
Write operations....................................................................... 110
Write destaging operation ...................................................... 112
I/O performance enhancements................................................... 113
Contents
Chapter 4 Performance and Optimization
Overview.......................................................................................... 116
Global memory performance features ......................................... 117
Global memory ASICs............................................................. 118
Tag Based Caching (TBC)........................................................ 119
Fast write capabilities.............................................................. 120
Dynamic Mirror Service Policy (DMSP) algorithm ............ 120
Disk Rotational Position Ordering (RPO) ............................ 120
Disk Multiple Priority Queues (DMPQ)............................... 120
PermaCache option.................................................................. 121
Symmetrix file system performance features.............................. 122
Dynamically adjusting performance algorithms................. 122
Enhancement of dynamic mirror service policy ................. 122
Enhancement of Symmetrix Optimizer ................................ 122
Enhanced system audit and investigation ........................... 123
Multiple channel directors............................................................. 124
Channel speeds and cable lengths......................................... 124
Host connectivity ..................................................................... 126
Open systems hypervolumes ....................................................... 127
EMC Symmetrix DMX-3 Product Guide
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Contents
Hypervolume extension feature............................................ 127
Disk drive cylinders................................................................ 127
Logical volume mapping ....................................................... 128
Metavolumes............................................................................ 128
Mainframe systems hypervolumes ............................................. 132
Hypervolume extension options........................................... 132
Split-volume capability........................................................... 132
Extended cylinder addressing option................................... 133
Determining cylinders for hypervolume user data............ 134
Tiered Storage Optimization......................................................... 136
Symmetrix Priority Controls.................................................. 136
Dynamic Cache Partitioning.................................................. 137
Optimizing Symmetrix system performance ............................. 139
Performance guidelines for open system devices............... 139
Virtual LUN technology......................................................... 140
Virtual LUN management...................................................... 140
Dynamic Host Addressing............................................................ 145
Virtual Provisioning ....................................................................... 146
Virtual Provisioning description ........................................... 146
Benefits of Virtual Provisioning ............................................ 147
Virtual Provisioning features................................................. 147
Multiport volume access for open systems environments ....... 149
Software options overview............................................................ 150
EMC ControlCenter family of products............................... 150
Symmetrix Optimizer ............................................................. 153
TimeFinder family of products.............................................. 154
Solutions Enabler..................................................................... 155
Symmetrix Management Console......................................... 155
Chapter 5 Data Integrity, Availability, and Protection
Overview.......................................................................................... 158
Symmetrix reliability and availability features................... 158
Symmetrix data integrity protection features ..................... 158
Data protection options .......................................................... 159
Reliability and availability features ............................................. 162
Reliable components............................................................... 162
Global memory director data integrity ................................ 162
Redundant global memory .................................................... 162
Channel director redundancy................................................ 163
Internal control data path redundancy ................................ 164
Fibre Channel back-end redundancy ................................... 164
Fibre Channel arbitrated loop design................................... 165
Dual-initiator feature ............................................................. 168
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EMC Symmetrix DMX-3 Product Guide
Contents
Redundant power subsystem ................................................ 169
Vaulting ..................................................................................... 170
Power loss to one power zone................................................ 170
Battery backup units ............................................................... 171
Nondisruptive component replacement............................... 172
Nondisruptive Enginuity upgrades...................................... 173
Nondisruptively change or remove FBA devices ............... 174
Deleting (and then adding) devices online.......................... 174
Maintaining data integrity ............................................................ 175
Remote support........................................................................ 175
Error Checking and Correction, and data integrity
protection .................................................................................. 176
Disk error correction and error verification......................... 177
Global memory director data integrity logic ....................... 178
Global memory error correction and error verification...... 178
Global memory chip-level redundancy................................ 179
Redundant global memory..................................................... 179
Longitude redundancy code (LRC)....................................... 179
Byte-level parity checking ...................................................... 179
Global memory access path protection................................. 180
DMX-3 security features................................................................. 181
Security overview .................................................................... 182
Symmetrix Service Credential, Secured by RSA ................. 182
Access control and user authorization.................................. 183
Symmetrix Audit Log.............................................................. 185
RSA enVision log security ...................................................... 185
EMC Certified Data Erasure for Symmetrix Disks ............. 186
IPsec security features............................................................. 187
Data protection guidelines............................................................. 189
Disk mirroring (RAID 1) concepts................................................ 191
Advantages of mirroring ........................................................ 191
Write operations with mirroring............................................ 191
Read operations with mirroring ............................................ 192
Error recovery with mirroring ............................................... 192
Dynamic Mirror Service Policy (DMSP)............................... 193
Business Continuance Volumes (BCV) ................................. 193
Virtual devices.......................................................................... 194
Symmetrix RAID 1/0 for open systems....................................... 195
Symmetrix RAID 10 for mainframe systems .............................. 196
Symmetrix DMX RAID 5 ............................................................... 198
RAID 5 overview...................................................................... 198
RAID 5 attributes ..................................................................... 198
RAID 5 device (volume).......................................................... 198
RAID 5 (3+1) ............................................................................. 199
EMC Symmetrix DMX-3 Product Guide
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Contents
RAID 5 (7+1)............................................................................. 199
RAID 5 modes of operation ................................................... 199
Normal mode........................................................................... 200
Regeneration ............................................................................ 202
RAID 5 performance optimization ....................................... 204
RAID 5 configuration guidelines .......................................... 205
RAID 5 configuration rules.................................................... 205
Symmetrix DMX RAID 6............................................................... 206
RAID 6 overview ..................................................................... 206
RAID 6 attributes..................................................................... 206
RAID 6 device (volume)......................................................... 206
Even-Odd algorithm ............................................................... 207
RAID 6 (6+2)............................................................................. 208
RAID 6 (14+2)........................................................................... 208
Rebuilding data and parity members................................... 209
RAID 6 configuration guidelines .......................................... 210
Comparing RAID 5 and RAID 6 ........................................... 210
Sparing in Symmetrix systems ..................................................... 211
Sparing configuration rules and guidelines........................ 211
Special DMX-3 sparing considerations ................................ 211
Sparing benefits ....................................................................... 213
Permanent sparing .................................................................. 213
Dynamic sparing ..................................................................... 216
SRDF family of products ............................................................... 221
Base SRDF family products.................................................... 221
SRDF family options ............................................................... 222
SRDF/A resiliency features ................................................... 222
Chapter 6 Mainframe Features and Support
Introduction..................................................................................... 226
Supported mainframe features..................................................... 227
EMC z/OS Storage Manager................................................. 227
Dynamic Channel Management............................................ 228
Dynamic Path Reconnection ................................................. 228
Concurrent Copy..................................................................... 228
Compatible Native Flash for Mainframe............................. 229
Multi-Path Lock Facility/Concurrent Access...................... 230
MultiSubsystem Imaging ....................................................... 230
Sequential Data Striping......................................................... 230
Partitioned Data Set (PDS) Assist ........................................ 230
Multiple Allegiance (MA) ...................................................... 231
Parallel Access Volumes ......................................................... 231
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EMC Symmetrix DMX-3 Product Guide
Contents
Compatible HyperPAV............................................................ 231
Dynamic Parallel Access Volumes......................................... 231
RAID 10 striping ...................................................................... 233
Supported ESCON devices and logical paths...................... 234
Supported FICON devices and logical paths .......................235
IBM MetroMirror (PPRC) ....................................................... 235
XRC support ............................................................................. 236
Configuring CKD volumes..................................................... 237
Deleting (and then adding) devices online.......................... 238
Support for 64 K cylinders...................................................... 238
FICON Cascading and Open Systems Intermix
configurations........................................................................... 238
Error reporting and recovery......................................................... 240
Types of errors.......................................................................... 240
Error reporting.......................................................................... 242
Operator messages................................................................... 246
EREP reports............................................................................. 248
Error handling.......................................................................... 249
Detecting the error................................................................... 250
Sense byte information................................................................... 251
Console error messages........................................................... 251
Host sense byte data formats ................................................. 253
Appendix A Symmetrix DMX-3 Specifications
Storage control................................................................................. 256
Physical data .................................................................................... 264
Environmental data ........................................................................ 266
Environmental Acclimation ................................................... 266
Power and cooling data.................................................................. 269
Electrical specifications and power requirements...................... 270
North American power specifications.................................. 271
North American extension cords and
mating connectors.................................................................... 271
International power specifications ........................................ 274
International extension cords
and mating connectors............................................................ 274
Appendix B Power Sequences
Vaulting............................................................................................. 278
Routinely powering up the Symmetrix DMX-3 ......................... 279
Powering down the Symmetrix DMX-3 ...................................... 281
EMC Symmetrix DMX-3 Product Guide
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Contents
Appendix C Planning and Installation
Planning overview.......................................................................... 284
Symmetrix DMX-3 presite considerations........................... 284
Layout and space recommendations.................................... 286
Securing the system................................................................. 286
Transportation and delivery guidelines............................... 287
Remote support ....................................................................... 287
Planning for upgrades ............................................................ 287
Symmetrix DMX-3 power requirements..................................... 288
Symmetrix touch current compliance .................................. 290
Regulatory compliance........................................................... 291
Choosing a UPS ....................................................................... 292
System placement options............................................................. 293
Overhead host cable routing.................................................. 294
Overhead power cable routing.............................................. 294
Floor load-bearing requirements........................................... 295
Symmetrix DMX-3 configuration floor cutouts .................. 297
Planning host connectivity............................................................ 298
Open systems installations............................................................ 301
Symmetrix hardware checklist.............................................. 301
Host checklist........................................................................... 302
Available EMC Fibre Channel cables.................................... 304
Available EMC GigE/iSCSI cables........................................ 305
Mainframe systems installations.................................................. 306
Symmetrix hardware checklist.............................................. 306
Available EMC ESCON cables .............................................. 307
Available EMC FICON cables ............................................... 308
10
Glossary ................................................................................................ 309
Index ..................................................................................................... 321
EMC Symmetrix DMX-3 Product Guide
Figures
Title Page
1 Symmetrix DMX-3 nine-bay configuration................................................. 27
2 Symmetrix DMX-3 five-bay configuration.................................................. 28
3 Symmetrix DMX-3 two-bay configuration.................................................. 28
4 Enginuity and the storage platform relationships...................................... 29
5 DMX-3 Silencer................................................................................................ 41
6 Symmetrix DMX-3 system bay (interior view, front and rear)................. 47
7 Symmetrix DMX-3 storage bay (interior view, front and rear)................ 49
8 Symmetrix DMX-3 block diagram................................................................ 54
9 Symmetrix DMX-3 message fabric ............................................................... 56
10 Symmetrix DMX-3 card cage configurations (front).................................. 57
11 Symmetrix DMX-3 card cage configurations (rear) ................................... 58
12 Track format for 3390 DASD ......................................................................... 73
13 Global memory director to channel and disk director matrix.................. 84
14 Symmetrix DMX-3 system bay and storage bay to
customer PDU power cabling ....................................................................... 88
15 Communication to directors.......................................................................... 90
16 XCM environmental control functionality.................................................. 91
17 FICON channel attachments.......................................................................... 93
18 ESCON channel attachments......................................................................... 96
19 Host cache use ............................................................................................... 102
20 Symmetrix global memory management and data flow......................... 103
21 I/O response time (mainframe environment).......................................... 105
22 I/O response time (open systems environment)...................................... 106
23 Symmetrix I/O operations........................................................................... 107
24 Read operations............................................................................................. 108
25 Read hit........................................................................................................... 108
26 Read miss........................................................................................................ 109
27 Write operations............................................................................................ 110
28 Fast write........................................................................................................ 111
29 Delayed fast write ......................................................................................... 111
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11
Figures
Title Page
30 Destaging operation...................................................................................... 112
31 TBC LRU function......................................................................................... 119
32 Logical volume mapping (8:1) .................................................................... 128
33 Concatenated volumes................................................................................. 130
34 Striped data.................................................................................................... 130
35 SMC migration dialog step 1....................................................................... 142
36 SMC migration dialog step 2....................................................................... 143
37 SMC migration dialog step 3....................................................................... 144
38 Fibre Channel back-end redundancy......................................................... 167
39 Symmetrix DMX dual-initiator example................................................... 169
40 Data record format for conventional DASD ............................................. 176
41 Symmetrix data record format.................................................................... 177
42 RAID 10 with Dynamic Mirror Service Policy.......................................... 196
43 RAID 5 data/parity (3+1) ............................................................................ 199
44 Writing data in RAID 5 normal mode ....................................................... 201
45 Reading data in RAID 5 normal mode ...................................................... 202
46 RAID 6 (6+2) data/parity layout................................................................ 208
47 RAID 6 (14+2)................................................................................................ 209
48 Permanent sparing process.......................................................................... 215
49 Dynamic sparing process............................................................................. 217
50 Dynamic sparing with locally mirrored pairs .......................................... 219
51 Dynamic support of Parallel Access Volumes.......................................... 232
52 Supported ESCON logical paths per port................................................. 234
53 Supported FICON logical paths per port.................................................. 235
54 PPRC and GDPS support............................................................................. 236
55 XRC overview................................................................................................ 237
56 z/OS IEA480E service alert error message format
(AC power failure)........................................................................................ 246
57 z/OS IEA480E service alert error message format
(mirror-1 volume in “not ready” state)...................................................... 247
58 z/OS IEA480E service alert error message format
(mirror-2 resynchronization)....................................................................... 247
59 z/OS IEA480E service alert error message format
(mirror-1 resynchronization)....................................................................... 248
60 Typical console error message.................................................................... 251
61 Power connections........................................................................................ 270
62 EMC model number DMX3-PCBL3DHR cable description................... 272
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EMC Symmetrix DMX-3 Product Guide
Title Page
63 EMC model number DMX3-PCBL3DHH cable description................... 272
64 System bay and storage bay wiring, North America (Delta).................. 273
65 EMC model number DMX3-PC3YAFLE cable description..................... 275
66 EMC model number DMX3-PCBL3YAG cable description.................... 275
67 System bay and storage bay wiring with flying leads (WYE) ................ 276
68 Symmetrix DMX-3 system bay and storage bay power switches.......... 280
69 DMX-3 system bay and storage bay to customer
PDU power cabling ....................................................................................... 288
70 DMX-3 power cabling requirement............................................................ 289
71 Nonraised floor installation......................................................................... 293
72 One system bay and eight storage bays..................................................... 297
Figures
EMC Symmetrix DMX-3 Product Guide
13
Figures
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EMC Symmetrix DMX-3 Product Guide
Tables
Title Page
1 Symmetrix DMX-3 performance features.....................................................26
2 Performance features roadmap......................................................................33
3 Availability and integrity features roadmap................................................35
4 DMX-3 Silencer kits model information .......................................................42
5 DMX-3 Silencer physical specifications........................................................42
6 Symmetrix DMX-3 model component overview.........................................46
7 Symmetrix DMX-3 system bay component overview................................48
8 Symmetrix DMX-3 storage bay component overview................................50
9 DMX-3 configurations .....................................................................................51
10 IBM controller/DASD compatibility.............................................................61
11 Symmetrix DMX-3 disk drive features ........................................................63
12 Symmetrix DMX-3 disk drive capacities .....................................................65
13 Logical volumes supported on Symmetrix DMX-3 disk drives................66
14 Logical volumes supported for DMX-3 systems .........................................67
15 IBM DASD emulation characteristics............................................................72
16 Supported protocols and Symmetrix DMX-3 channel directors...............76
17 Symmetrix DMX-3 channel director models and descriptions .................77
18 Symmetrix devices and addressing capabilities
for Fibre Channel front-end directors ...........................................................78
19 ESCON director configurations.....................................................................79
20 FICON director configurations......................................................................81
21 Symmetrix FICON cable distances ...............................................................93
22 Symmetrix ESCON cable distances...............................................................97
23 Symmetrix Fibre Channel cable distances ...................................................98
24 Symmetrix open systems disk capacities and cylinders...........................128
25 Symmetrix mainframe disk capacities and cylinders ...............................134
26 Device emulations and number of cylinders .............................................135
27 Symmetrix DMX-3 channel director connectivity.....................................163
28 Data protection options.................................................................................189
29 RAID 5 write operation sequence in normal mode...................................200
EMC Symmetrix DMX-3 Product Guide
15
Tables
Title Page
30 RAID 5 and RAID 6 comparison .................................................................210
31 Environmental errors reported as SIM messages......................................244
32 Error handling steps......................................................................................249
33 Unit status bits................................................................................................252
34 Channel status bits......................................................................................... 252
35 DMX-3 73 GB disk capacities ....................................................................... 257
36 DMX-3 146 GB disk capacities .....................................................................258
37 DMX-3 300 GB disk capacities .....................................................................259
38 DMX-3 450 GB disk capacities .....................................................................260
39 DMX-3 500 GB disk capacities .....................................................................261
40 Physical specifications...................................................................................264
41 Multibay width measurements ...................................................................264
42 Multibay weights ...........................................................................................265
43 Data center acclimation times ......................................................................266
44 Operating environment specifications........................................................267
45 Shipping and storage environment specifications.................................... 267
46 Air volume generated....................................................................................267
47 Sound power and sound pressure levels.................................................... 267
48 DMX-3 power consumption and heat dissipation....................................269
49 Electrical specifications, North American, three-phase, four-wire
(Delta) .............................................................................................................. 271
50 Extension line cord, North American, three-phase, four-wire (Delta)... 271
51 Electrical specifications, international, three-phase, five-wire, (WYE) .. 274
52 Extension line cord, international, three-phase, five-wire, (WYE) .........274
53 Preinstallation responsibility summary......................................................284
54 Symmetrix DMX-3 channel adapter port worksheet................................299
55 Symmetrix checklist for UNIX or PC server hosts....................................301
56 UNIX or PC server host checklist ................................................................ 302
57 EMC Fibre cables - Fibre Channel connect.................................................304
58 GigE/iSCSI channel cables ...........................................................................305
59 Symmetrix checklist for mainframe hosts..................................................306
60 ESCON channel cables..................................................................................307
61 EMC Fibre cables - FICON 9 micron connect ............................................308
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EMC Symmetrix DMX-3 Product Guide
The following warnings and cautions pertain throughout this guide:
WARNING Trained service personnel only.
This EMC product has more than one power supply cord. To reduce
the risk of electric shock, disconnect all power supply cords before
servicing.
Ground circuit continuity is vital for safe operation of the machine.
Never operate the machine with grounding conductors disconnected.
Remember to reconnect any grounding conductors removed for or
during any installation procedure.
Warnings and
Cautions
ATTENTION Resérvé au personnel autorisé.
Cet appareil EMC comporte plus d'un cordon d'alimentation. Afin de
prévenir les chocs électriques, débranchez tous les cordons
d'alimentation avant de faire le dépannage.
Un circuit de terre continu est essentiel en vue du fonctionnement
sécurisé de l'appareil. Ne mettez jamais l'appareil en marche lorsque
le conducteur de mise à la terre est débranché.
WARNUNG Nur für authorisiertes Fachpersonal.
Dieses EMC Produkt verfügt über mehrere elektrische
Netzanschlüsse. Zur Vermeidung eines elektrischen Schlages sind vor
Servicearbeiten an der Stromversorgung alle Netzanschlüsse zu
trennen.
Kontinuierliche Erdung ist notwendig während der gesamten
Betriebsdauer des Gerätes. Es ist unzulässig das Gerät ohne Erdung
zu betreiben. Gerät muss geerdet werden, bevor es am Stromnetz
angeschlossen wird.
EMC Symmetrix DMX-3 Product Guide
17
Warnings and Cautions
WARNING
WARNING
WARNING
CAUTION
!
Additional warnings
and cautions
Before attempting to service EMC hardware described in this
document, observe the following additional Warnings and Cautions:
The hardware enclosure contains no user-serviceable parts, so it
should not be moved or opened for any reason by untrained persons.
If the hardware needs to be relocated or repaired, only qualified
personnel familiar with safety procedures for electrical equipment
and EMC hardware should access components inside the system or
move the system.
This product operates at high voltages. To protect against physical
harm, power off the system whenever possible while servicing.
In case of fire or other emergency involving the EMC product, isolate
the product’s power and alert appropriate personnel.
Trained personnel are advised to exercise great care at all times
when working on the EMC hardware.
Remember to:
◆ Remove rings, watches, or other jewelry and neckties before you begin
any procedures.
◆ Use caution near any moving part and any part that may start
unexpectedly such as fans, motors, solenoids, etc.
◆ Always use the correct tools for the job.
◆ Always use the correct replacement parts.
◆ Keep all paperwork, including incident reports, up-to-date, complete,
and accurate.
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EMC Symmetrix DMX-3 Product Guide
Warnings and Cautions
CAUTION
!
Static precautions EMC incorporates state-of-the-art technology in its designs, including
the use of LSI and VLSI components. These chips are very susceptible
to damage caused by static discharge and need to be handled
accordingly.
Before handling printed circuit boards or other parts containing
LSI or VLSI components, observe the following precautions:
◆ Store all printed circuit boards in antistatic bags.
◆ Use a ground strap whenever you handle a printed circuit board.
◆ Unless specifically designed for nondisruptive replacement, never
plug or unplug printed circuit boards with the power on. Severe
component damage may result.
EMC Symmetrix DMX-3 Product Guide
19
Warnings and Cautions
20
EMC Symmetrix DMX-3 Product Guide
Preface
IMPORTANT
!
As part of its effort to improve and enhance the performance and capabilities
of the Symmetrix product line, EMC periodically releases revisions of the
Symmetrix hardware and Enginuity Operating Environment. Therefore,
some functions described in this guide may not be supported by all versions
of Symmetrix hardware or Enginuity currently in use.
For the most up-to-date information on Symmetrix and Enginuity,
refer to the “Symmetrix DMX-3, DMX-4 EMC Enginuity Release
Notes”, located on EMC Powerlink.
If your Symmetrix DMX-3 does not function properly or does not function
as described in this document, please contact your EMC representative.
Audience This manual is part of the Symmetrix DMX series documentation set,
and is intended for use by storage administrators, system
programmers, or operators who are involved in acquiring, managing,
or operating the Symmetrix system.
Related
documentation
Conventions used in
this guide
For additional information on all Symmetrix-related publications,
contact your EMC Sales Representative or refer to the EMC
Powerlink website at:
http://Powerlink.EMC.com
EMC uses the following conventions for notes, cautions, warnings,
and danger notices.
Note: A note presents information that is important, but not hazard-related.
EMC Symmetrix DMX-3 Product Guide
21
Preface
CAUTION
!
WARNING
DANGER
A caution contains information essential to avoid data loss or
damage to the system or equipment. The caution may apply to
hardware or software.
A warning contains information essential to avoid a hazard that can
cause severe personal injury, death, or substantial property damage
if you ignore the warning.
A danger notice contains information essential to avoid a hazard
that will cause severe personal injury, death, or substantial property
damage if you ignore the message.
This product guide contains no DANGER messages.
Typographical conventions
EMC uses the following type style conventions in this document:
Normal Used in running (nonprocedural) text for:
• Names of interface elements (such as names of windows,
dialog boxes, buttons, fields, and menus)
• Names of resources, attributes, pools, Boolean expressions,
buttons, DQL statements, keywords, clauses, environment
variables, filenames, functions, utilities
• URLs, pathnames, filenames, directory names, computer
names, links, groups, service keys, file systems, notifications
Bold: Used in running (nonprocedural) text for:
• Names of commands, daemons, options, programs,
processes, services, applications, utilities, kernels,
notifications, system call, man pages
Used in procedures for:
• Names of interface elements (such as names of windows,
dialog boxes, buttons, fields, and menus)
• What user specifically selects, clicks, presses, or types
Italic: Used in all text (including procedures) for:
• Full titles of publications referenced in text
• Emphasis (for example a new term)
• Variables
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EMC Symmetrix DMX-3 Product Guide
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Preface
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EMC Symmetrix DMX-3 Product Guide
23
Preface
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24
EMC Symmetrix DMX-3 Product Guide
Invisible Body Tag
1
Introducing the
Symmetrix DMX-3
This chapter provides an overview of the Symmetrix DMX-3 and
highlights the performance, availability and serviceability features,
and hardware and software options:
◆ Symmetrix DMX-3 ............................................................................. 26
◆ Symmetrix platform and Enginuity operating environment ...... 29
◆ Storage capacities and global memory requirements................... 31
◆ Performance features......................................................................... 33
◆ Availability and integrity features................................................... 35
◆ Serviceability features ....................................................................... 37
◆ Supported software applications..................................................... 38
◆ Hardware options.............................................................................. 41
Introducing the Symmetrix DMX-3
25
Introducing the Symmetrix DMX-3
Symmetrix DMX-3
The EMC® Symmetrix DMXTM systems are EMC’s family of high-end
storage solutions. The DMX-3 model establishes a new performance
and capacity trajectory for the highest of the high-end enterprise
systems.
The DMX-3 offers 4 Gb/s front-end that provides increased
performance without increasing power and cooling.
The DMX-3 fully leverages the EMC industry-leading storage
management functionality and introduces the economic benefits of
scalable packaging to the high-end storage market.
The Symmetrix
®
DMX-3 is incrementally scalable, supporting from
96 to 1,920 2 Gb/s high-performance Fibre Channel disk drives,
providing a maximum raw capacity of approximately 1 PB.
Note: For information on 2,400 drive support, contact your EMC Sales
Representative.
To support the massive scalability of DMX-3 configurations, the DMX
architecture has been expanded and improved to deliver higher
throughput (1 GB/s links) and increased I/O performance (four dual
1.3 GHz PPC processor complexes per director). Table 1 on page 26
describes some of the Symmetrix DMX-3 performance features.
26
Tabl e 1 Symmetrix DMX-3 performance features
DMX data paths 32–128 8 per I/O director, 16 per global memory director
DMX data bandwidth 32–128 GB/s
DMX message bandwidth 4.0–6.4 GB/s
PowerPC processors 84–130 Four dual 1.3 GHz processor complexes per director
Global memory 16–512 GB
Concurrent Memory transfers 8–32 4 per global memory director
a. 256 GB effective
EMC Symmetrix DMX-3 Product Guide
a
Available in 8, 16, 32, and 64 GB global memory directors
Introducing the Symmetrix DMX-3
The field-proven Direct Matrix Architecture® (“Symmetrix DMX-3
architecture” on page 53) provides dedicated, nonblocking
interconnects between I/O directors and global memory regions.
Combined with expanded global memory director technology and
the dynamically optimized caching algorithms of the Enginuity
™
storage operating environment, systems based on the Symmetrix
DMX architecture deliver scalable performance to meet the most
demanding information access, protection, and distribution
requirements.
Symmetrix DMX-3 configurations
The DMX-3 consists of a single system bay and from one to eight
storage bays. The system bay contains the 24-slot card cage, service
processor, power modules, and battery backup unit (BBU)
assemblies. The storage bays contain disk drives and associated BBU
modules. In a highly scalable component and cabinet configuration,
the DMX-3 has the capacity, connectivity, and throughput to handle a
wide range of high-end storage applications.
Figure 1 on page 27 provides a front view of the exterior of a
Symmetrix DMX-3 configured with one system bay and eight storage
bays. Figure 2 on page 28 provides a front view of the exterior of a
Symmetrix DMX-3 configured with one system bay and four storage
bays. Figure 3 on page 28 provides a front view of the exterior of a
Symmetrix DMX-3 configured with one system bay and one storage
bay.
Chapter 2, “Symmetrix DMX-3 Hardware,” provides more complete
descriptions of the Symmetrix DMX-3.
Figure 1 Symmetrix DMX-3 nine-bay configuration
Symmetrix DMX-3
27
Introducing the Symmetrix DMX-3
Figure 2 Symmetrix DMX-3 five-bay configuration
28
Figure 3 Symmetrix DMX-3 two-bay configuration
EMC Symmetrix DMX-3 Product Guide
Introducing the Symmetrix DMX-3
Symmetrix hardware
EMC Solutions Enabler Applications Program Interface (API)
Symmetrix-based applications
Host-based Symmetrix applications
Independent software vendor applications
Enginuity operating environment functions
Symmetrix platform and Enginuity operating environment
The Symmetrix DMX hardware architecture (“Symmetrix DMX-3
architecture” on page 53) and the Enginuity
TM
operating
environment are the foundation for the Symmetrix DMX system
storage platform, which consists of the following:
◆ Symmetrix DMX hardware
◆ Enginuity-based operating functions
◆ EMC Solutions Enabler Application Program Interfaces (APIs)
◆ Symmetrix-based applications
◆ Host-based Symmetrix applications
◆ Independent Software Vendor (ISV) applications
Figure 4 on page 29 illustrates the relationships among these software
layers (and Symmetrix hardware).
Figure 4 Enginuity and the storage platform relationships
Enginuity operating environment
Symmetrix Enginuity is the operating environment for the
Symmetrix DMX systems. Enginuity manages and ensures the
optimal flow and integrity of information through the different
hardware components of the Symmetrix system. Enginuity manages
all Symmetrix operations from monitoring and optimizing internal
data flow, to ensuring the fastest response to the user's requests for
information, to protecting and replicating data.
Symmetrix platform and Enginuity operating environment
29
Introducing the Symmetrix DMX-3
Enginuity services Enginuity provides the following services for the Symmetrix DMX
systems:
◆ Independently manages system resources to intelligently
optimize performance across a wide range of I/O requirements.
◆ Ensures system availability through advanced fault monitoring,
detection, and correction capabilities and provides concurrent
maintenance and serviceability features.
◆ Interrupts and prioritizes tasks from microprocessors and, for
example, ensures that fencing off failed areas takes precedence
over other operations.
◆ Offers the foundation for specific software features available
through EMC’s disaster recovery, business continuance, and
storage management software.
◆ Provides functional services for both Symmetrix-based
functionality and for a large suite of EMC storage application
software.
◆ Defines priority of each task including basic system maintenance,
I/O processing, application processing (for example,
EMC ControlCenter
®
, SRDF®, TimeFinder®, and EMC
ControlCenter Symmetrix Optimizer).
◆ Provides uniform access through APIs for internal calls and
provides an external interface to allow integration with other
software providers and ISVs.
EMC Solutions Enabler APIs
30
EMC Symmetrix DMX-3 Product Guide
EMC Solutions Enabler APIs are the storage management
programming interfaces that provide an access mechanism for
managing the Symmetrix
third-party storage, switches, and host
storage resources. They enable the creation of storage management
applications that don’t have to understand the management details of
each piece within the total storage environment.
Note: Contact your local EMC Sales Representative or the EMC Powerlink®
website at: http://Powerlink.EMC.com for more information on EMC
storage management APIs
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