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The background scanning causes the running indicator of the disk is flickering while the storage hasn’t service

Publication Date:  2012-11-26 Views:  34 Downloads:  0
Issue Description
In a site, the S2600 hasn’t run any service, but the running indicator of the disk is flickering all the time, close the service server connected to the storage, the problem is still on.

Alarm Information
None
Handling Process
Introduce the theory and function of the background scanning to the client, the background scanning dispenses the reading operation, and estimates the type of the bad slot according to the reported information, if it’s the UNC bad, firstly read the data from the redundant disk, through calculating, then restore the data of the bad slot, implement the mapping again, and write the data to a well hard disk’s area, decrease the double disks fault and improve the reliability.

Root Cause
The problem is caused by the default background scanning function of the S2600 storage. The background scanning dispenses the reading operation, and estimates the type of the bad slot according to the reported information, so the running indicator of the disk will flicker even if there isn’t service to read and write.

Suggestions
Suggest the customer to open this function, and don’t modify the period of the background scanning function casually.

END