EMC FC5300 User Manual download pdf (Page 89)

Hardware for Shared Storage

5-5

Storage System Hardware

Disk Modules and Module IDs — Rackmount DPE-Based System

Storage Processor (SP)

The SP provides the intelligence of the storage system. Using its own

operating system (called Core Software), the SP processes the data

written to or read from the disk modules, and monitors the modules

themselves. An SP consists of a printed-circuit board with memory

modules (DIMMs), and status lights.

For high availability, a storage system can support a second SP. The

second SP provides a second route to a storage system and also lets

the storage system use write caching for enhanced write

performance. Two SPs are required for shared storage.

Figure 5-4 Shared Storage Systems

See Chapter 3 for more examples of shared storage.

1 2

4 5

6 7

10 11 12 13 14 15 16 17 18 19

SP A

Server Server

SP B

Storage systems

Switch fabric

Adapter

Server

SP A SP B

Switch fabric

Path 1

Path 2

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EMC FC5300 User Manual Page 89