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Mode 1 Expansion involves adding more SCSI hard disk drives to a
logical drive, which may require that the user obtain an enclosure with
more drive bays. The data will be re-striped onto the original and newly
added disks.
RAID Expansion - Mode 1
2GB
2GB
RAID 5 Logical Drive - 4GB
2GB
RAID
Expansion
In the figure above, new drives are added to increase the capacity of a
4-Gigabyte RAID 5 logical drive. The two new drives increase the
capacity to 8 Gigabytes.
Mode 2 Expansion, on the other hand, requires the same number of
higher-capacity SCSI hard disk drives for a given logical drive.
28
2GB
2GB
+
Add-in New Drives
2GB
2GB
RAID 5 Logical Drive - 8GB
2GB
+
2GB
2GB
User's Guide
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