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Hardware for Unshared Storage
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Storage System Hardware
Figure 5-7 Disks and Disk IDs
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), status lights, and switches for setting FC-AL
addresses.
For high availability, a storage system can support a second SP. A
second SP provides a second route to a storage system, so both SPs
can connect to the same server or two different servers, as follows.
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