Accusys TShare A16T3-Share, User Manual

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5.5 Preference
5.5.1 Disk Lag Proof
This feature ensures the stability and continuity of the RAID performance. In RAID 5
and RAID 6, DLP prevents the aging or slow responds of a single hard disk from
influencing the overall performance. The advantage of this feature is making sure the
data be protected if some hard disks fail to perform well.
In the event of performance degradation or delay of a single drive due to aging, the
RAID system reads both data and parity stripes concurrently. It bypasses the slow
reads and returns data to the host with the regenerated data and to provide stable
performance based on the RAID parity.
Note
Slow response of some hard disks can be tolerated in DLP mode, you may use
S.M.A.R.T. function to check the conditions of hard disks in an array and
replace the faulty ones.