EMC Symmetrix DMX-3 User Manual

7
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 Specifications

General

Brand	EMC
Model	Symmetrix DMX-3
Category	Storage
Language	English