Specifications

Escala Tower PL & S, E, T System Hardware
Chapter 3: External Storage and SAN Subsystems 2/116
9es3s1c3.doc
Rev 5.9
02/12/2003
3. DAS SCSI SUBSYSTEMS (DAS 1000, 2000 AND 3000 SERIES) ................................. 34
3.1. Highlights ................................................................................................................................................................... 34
3.2. The Storage Control Processor (SP)........................................................................................................................ 35
3.3. The 3.5" SCSI-2 Disk Modules ................................................................................................................................ 36
3.4. The DAS 3000 Series Cabinet................................................................................................................................... 36
3.5. The DAS 2000 Series Cabinet................................................................................................................................... 37
3.6. The DAS 1000 Series Cabinet................................................................................................................................... 37
3.7. The Power Subsystem ............................................................................................................................................... 37
3.8. The Cooling Subsystem............................................................................................................................................. 37
3.9. The SCSI Host Connection....................................................................................................................................... 38
3.10. Disk Drives Specifications....................................................................................................................................... 38
3.11. Mirrored Caching Option....................................................................................................................................... 39
3.12. Single board Caching Option ................................................................................................................................. 39
3.13. Prerequisites & Configurability............................................................................................................................. 39
3.14. Configuration Rules and Hints for the DAS1300, DAS2900 and DAS3200/DAS3500 ..................................... 41
3.14.1. Basic Cabinet..................................................................................................................................................... 41
3.14.2. Number of Disk Drives Allowed....................................................................................................................... 41
3.14.3. RAID Group Binding Rules .............................................................................................................................. 42
3.14.4. Number of Power Modules................................................................................................................................ 42
3.14.5. Number of Storage Processors (SP) .................................................................................................................. 42
3.14.6. Mirrored Cache.................................................................................................................................................. 42
3.14.7. Single Board Cache ........................................................................................................................................... 42
3.15. Performance............................................................................................................................................................. 43