10-6 Internal Cabling Diagrams
Connection of Disk Array Controller (SCSI)
If SCSI disks are installed, the disk array controller can be connected to the server. The internal hard
disks can be subject to the disk array configuration. The supported RAID configuration includes
RAID0 (striping) and RAID1 (mirroring).
In addition, three hot-swap SCSI hard disk drives are accessible from the front of the chassis which
can be swapped in or out of the system without powering it down if the optional hot-swap SCSI
hard disk drive cage is installed in your system.
IMPORTANT:
The installed disk array controller in the server is used
only for configuring the RAID drive with the internal hard disk drives.
The disk array controller does not connect with the optional external
SCSI drive enclosure.
RAID0 (striping)
RAID0 provides block "striping" across multiple drives, yielding higher performance than
is possible with individual drives. This level does not provide any redundancy.
IMPORTANT:
If either of the two hard disks configuring the array is defected, the
data cannot be recovered.
The logical capacity of the array is an integer multiple of the
capacity of a connected hard disk.
RAID1 (mirroring)
The hard disk drives are paired and mirrored. All data is 100 percent duplicated on a drive
of equivalent size.
IMPORTANT:
Because data is read to or written from two hard disks concurrently,
the disk access performance is lower than that of the configuration
using only a single disk.
The logical capacity of the array is the same as the capacity of a
single hard disk connected.
Summary of Contents for Express5800/110Ei
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Page 33: ...General Description 2 5 Rear View 1 2 3 2 4 5 6 7 8 9 10 11 12 ...
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