About Internal Disk Drives - Sun Microsystems Enterprise 250 Owner's Manual

About Internal Disk Drives

The Enterprise 250 server supports up to six internal, hot-pluggable UltraSCSI disk
drives. Drives are 3.5-inches wide and either 1-inch or 1.6-inches high.
All internal drives are supported by the 40-Mbyte per second UltraSCSI interface on
the system's main logic board. All drives plug in to a six-disk backplane, which
mounts to the rear of the system's disk cage.
The system's disk cage features six green/yellow LED lights, each one located
adjacent to a disk bay. These LEDs indicate the operating status and any fault
conditions associated with each disk drive. This diagnostic feature helps the
administrator to quickly identify drives requiring service. For additional information
about disk drive LEDs, see "Disk LEDs" on page 246.
The following figure shows the system's six internal disk slots and LEDs. Disk slots
are numbered from 0 to 5.
The Solstice DiskSuite software supplied with the Solaris server media kit lets you
use internal disk drives in a variety of RAID configurations. RAID 0 (striping),
RAID 1 (mirroring), RAID 0+1 (striping plus mirroring), and RAID 5 (striping with
54 Sun Enterprise 250 Server Owner's Guide • June 1998
5 3 1
4 2 0
LEDs