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About Switched Shared Storage and SANs (Storage Area Networks)
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About Fibre Channel Storage Systems and Networks (SANs)
Storage System Hardware for Shared Storage
For shared storage, you need a Disk-array Processor Enclosure (DPE)
storage system.
A DPE is a 10-slot enclosure with hardware RAID features provided
by one or two storage processors (SPs). For shared storage, two SPs
are required. In addition to its own disks, a DPE can support up to
nine 10-slot Disk Array Enclosures (DAEs) for a total of 100 disks.
Figure 1-12 Storage System with a DPE and Three DAEs
EMC1741
DPE
DAE
DAE
DAE
Standby power
supply (SPS)