Description

When there is a problem with a hard drive, the IO activity on that hard drive may freeze or slow down. After the Sangfor HCI platform identifies the slow disk, the virtual storage will automatically isolate the slow disk to avoid continuous impact on the customer's business.

Slow Disk:

• A slight slow disk alert will be generated if the 60-second IO latency exceeds 25 milliseconds within 5 minutes.

• If the 60-second IO latency is greater than 125 milliseconds within 5 minutes, the hard disk will be isolated, and a serious slow disk alert will be generated.

Frozen Disk:

• When IO does not respond for more than 3 seconds, it is considered that IO has been stuck. If the IO does not respond for 10 seconds in 13 seconds, the disk is considered a freeze. The software will isolate and switch the read/write source to a normal disk.