chkdisk "correcing error indexes" during boot

Hi
I have 1 RAID5 system, running 1 physical disk as OS volume C:, 2 arrays as volume D: (4TB) and E: (8TB).
Somehow, I believe the D: has 1 bad disk which has been constantly kicked out of the array after we loaded the array with data. I, temporarily, reboot each time to have the disk merge into the array and sync all data.

however, this time, the boot processes initiate chkdsk and running at "correcting error indexes at ......"
The LEDs indicated the array D: is working.

I'm curious if
1. can I disable this chkdsk next time? I tried to intervene at boot, but I failed.
2. how long this process typically will take? I'm afraid it might take hours since that is a 4TB array.
3. will data be erase? I understand that chkdisk won't do this, but just make sure.

thanks millions!!

valleytechAsked:
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rindiConnect With a Mentor Commented:
Chkdsk, once it has passed a successful run, shouldn't run again next time, it only starts automatically if the OS has triggered it to run due to errors. It can take hours or even longer, it depends on the size of the array and number of errors it finds. Chkdsk will only erase files or data that is corrupt anyway, so there is nothing to worry about there.

If one of the HD's in the array is bad, you should change it asap. Sometimes it can be hard to find the bad drive though. It depends on the array controller if it can tell you which drive is bad or going bad. Sometimes it is necessary to test each disk on a separate, non-raid controller and use the HD manufacturer's diagnostic utility on it.
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