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3 Identifying Storage System Components

NOTE: The illustrations in this chapter are examples only and may not accurately represent your

storage system configuration.

Understanding Component Numbering

Due to the large number of prospective configurations, component placement and internal cabling

is standardized to simplify installation and maintenance. System components are placed in the

rack according to the principles outlined in this chapter, and are numbered according to their

order and location in the cabinet.

The storage system can include the following types of drive and node enclosures:

• The HP M6710 Drive Enclosure (2U24) holds up to 24, 2.5 inch small form factor (SFF) Serial

Attached SCSI (SAS) disk drives, arranged vertically in a single row at the front of the enclosure

(numbered 0 to 23). The back of the enclosure contains two 580 W power cooling modules

(PCMs) and two I/O modules. Figure 1 (page 13) shows the 2U24 drive enclosure, and also

applies to the StoreServ 7200 and 7400.

• The HP M6720 Drive Enclosure (4U24) holds up to 24, 3.5 inch large form factor (LFF) SAS

disk drives, arranged horizontally with four columns of six disk drives at the front of the

enclosure (numbered 0 to 23). The back of the enclosure contains two 580 W PCMs and two

I/O modules. Figure 2 (page 13) shows and applies only to the 4U24 drive enclosure.

• The HP 3PAR StoreServ 7000 and 7000c series controller enclosures hold up to 24, 2.5 inch

SFF SAS disk drives arranged, vertically in a single row at the front of the enclosure (numbered

0 to 23). The back of the enclosure contains two 764 W PCMs and two controller nodes.

IMPORTANT: Figure 2 (page 13) applies only to the 4U24 drive enclosure. Figure 1 (page 13)

is applicable to the 2U24 drive enclosure as well as the 3PAR StoreServ 7200 and 7400 2-node.

Disk Drive Numbering

There are two types of drive enclosures. The maximum number of supported drive enclosures varies

based on the model and the number of nodes.

Disk drives are mounted on a drive carrier or magazine and are located the front of the enclosures.

• 2.5-inch SFF disk drive numbering

12 Identifying Storage System Components

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