Sun Microsystems Fire 880, Руководство пользователя

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Chapter 4 Mass Storage Subsystem Configuration 93
The following table describes the performance features of the Sun Fire 880 mass
storage subsystem.
Features Performance Enhancements
Dual-ported FC-AL disk drives,
dual-loop backplanes, and
multiple FC-AL host adapters These features enable simultaneous access to the
internal storage array via two separate loops. When
combined with the Dynamic Multipathing (DMP)
feature of VERITAS Volume Manager, maximum disk
I/O throughput is effectively doubled from 100 to 200
Mbytes per second. DMP automatically balances the
I/O load across multiple data paths to the system’s
internal or external storage arrays. For additional
details, see “About the FC-AL Disk Backplanes” on
page 95 and “About Volume Management Software”
on page 152.
Support for RAID levels 0, 0+1,
1+0, and 5 When configured with optional RAID software, the
Sun Fire 880 system supports RAID levels 0, 0+1, 1+0,
and 5, which incorporate disk striping. Disk striping
distributes contiguous blocks of data across multiple
disks. This speeds up data access by enabling multiple
disk controllers to access the data simultaneously. For
additional information, see “About Volume
Management Software” on page 152.