2.6 Parity Protection
XOR engine in 2350RES generate parity block. In RAID 3 mode, Parity Block will be stored in the
same hard drive. While in RAID 5 mode, Parity Block will be spread over all of the different hard
drives.
2350JMR will also make use of same size disk space in each hard disk under RAID 3/5 condition.
( In RAID 3 or 5 mode, failure in a hard disk will cause ST-2350RES enter degraded-mode. Host
controller still could read/write data through 2350RES normally without knowing any defects.
Users have to replace the defective hard disk. 2350RES then will enter identical-rebuild mode
automatically.)
2.7 Normal Mode
(Single)
Normal mode means all of the configured hard drives exist and 2350RES is not in rebuild
condition. User can see the original hard drives from the host which supports port multiplier
technology.
( Note: If the host does not support port multiplier, then you will find only one hard drive on
operating system. The RAID tool is useful in this case.)
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