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I was wondering approximately how long I should expect a chkdsk on a raid 5 array with a max capacity of 300GB would take? It seems it has been on step 4 of 5 for quite a while.

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    Is quite a while, minutes, hours, days? The total size isn't the only factor. Can you give us an estimate of the number of files? A filesystem with a large number of small files will take much longer then a filesystem with a few huge files.
    – Zoredache
    Dec 8, 2010 at 17:44
  • my apologies: I've never had to do this on a critical machine before. There are over 100,000 files using up approximately 167 GB. I don't know the exact numbers. Quite a while in this case is about an hour and a half at this point.
    – Jen
    Dec 8, 2010 at 18:01

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1 minute per gigabyte. But I'm guessing because I have absolutely no idea about your file system, number of files, amount of data, etc..

(I use my 1 minute per gigabyte based on real-world experience of running the SQL Server checkdb command and backup / verify, so it's not a complete guess).

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  • the number of files is over 100,000. We have about 167 GB of actual data on the RAID
    – Jen
    Dec 8, 2010 at 17:59
  • 100 000 files isn't a lot. 167GB isn't a lot either. That said, there are factors around RAID 5 that could be making it slow.
    – user3914
    Dec 8, 2010 at 18:01
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Depends primarily on the speed of your RAID controller & disks. I have a 5 year old HP Proliant DL380G4 with a 800GB RAID5 Array hooked up to an HP SmartArray 6i. The volume is about 80% full. chkdsk took roughly an hour last time I tried, but there was nothing wrong with the volume.

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