NonStop NS2200 Series Planning Guide

SAS disk enclosures connect to Storage CLIMs via SAS cables. For details on cable types, see
Appendix B (page 172).
Factory-Default Disk Volume Locations for SAS Disk Devices
This illustration shows where the factory-default locations for the primary and mirror system disk
volumes reside in separate disk enclosures:
NOTE: If you have ordered $OSS, you need a 4 pair disk configuration.
Configuration Restrictions for Storage CLIMs
• The maximum number of logical unit numbers (LUNs) for each CLIM, including SAS disks, ESS
and tapes is 512. Each primary, backup, mirror and mirror backup path is counted in this
maximum.
• SAS disk enclosures connected to DL380 G6 and DL380p Gen8 CLIMs cannot be
daisy-chained.
Use only the supported configurations as described below.
Configurations for Storage CLIMs and SAS Disk Enclosures
NOTE: If you have ordered $OSS, you need a 4 pair disk configuration.
These subsections show the configurations for SAS Disk enclosures with Storage CLIMs:
DL380 G6 Storage CLIM and SAS Disk Enclosure Configurations
• “Two DL380 G6 Storage CLIMs, Two M8381-25 SAS Disk Enclosures” (page 91)
• “Two DL380 G6 Storage CLIMs, Four M8381-25 SAS Disk Enclosures” (page 92)
• “Four DL380 G6 Storage CLIMs, Four M8381-25 SAS Disk Enclosures” (page 93)
Two DL380 G6 Storage CLIMs, Two M8381-25 SAS Disk Enclosures
This illustration shows example cable connections for the two DL380 G6 Storage CLIM, two
M8381-25 SAS disk enclosure configuration.
Storage CLIM Devices 91