80 Sun Fire V890 Server Owner’s Guide • September 2004
The following table describes the performance features of the Sun Fire V890 mass
storage subsystem.
About the Mass Storage Subsystem
Components
All Sun Fire V890 servers include the following mass storage subsystem
components.
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 volume management software that
takes advantage of the Sun Fire V890 server’s
multipathing capability, disk throughput can be
increased. For additional details, see “About the FC-
AL Disk Backplanes” on page 82 and “About Volume
Management Software” on page 134.
Support for RAID levels 0, 0+1,
1+0, and 5
When configured with optional RAID software, the
Sun Fire V890 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 134.
Component Quantity Description
FC-AL disk backplane 1 Base backplane providing connections for up to
six dual-ported FC-AL disk drives. See “About
the FC-AL Disk Backplanes” on page 82.
On-board FC-AL host
adapter
1 Integrated into the system motherboard.
Manages FC-AL I/O operations and data
transfers on Loop A of the mass storage
subsystem. See “About FC-AL Host Adapters”
on page 86.
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