Solution if a slow disk exists

Slow disk policies of the current T series products are as follows:

Collect statistics on I/Os read from or written to a disk. When it takes 10s (configurable) to read I/O from or write I/O to a disk, the number of such I/Os on a disk exceeds 10 (configurable) within 30 minutes (configurable), and the interval between I/Os is longer than 3s (configurable), the system reports the slow disk. If disk rejection does not result in RAID failures, perform disk rejection.

Recommended action:
If the slow disk is not removed and inserted, collect S.M.A.R.T information about the disk and replace it. Send the slow disk back to Huawei R&D engineers for analysis.

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