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Aleksiv95
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Post subject: In case of a hard drive fails
 Posted: Jan 07, 2012 - 12:02 PM CST
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Joined: Jan 07, 2012
Posts: 1
 
Status: Offline
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Hi! I have a Buffalo TeraStation ES 4TB storage and I've got a couple questions:
I have RAID 5 array on hard drives 1-3 and drive 4 works as a hot spare disk.
1. Does Raid 5 work properly with 3 hard drives overall? In other words, if one of drives 1-3 fails, can the data be recovered by changing the broken hard drive (even if there wasn't the hot spare drive)?
2. Now drive 4 works as a hot spare drive. If let's say drive 1 fails, will TeraStation make a new Raid array from drives 2-4 and leave disk 1 out of it and everything will work seamlessly all the time? When I change drive 1, can I make it a new hot spare disk?
Or am I totally wrong? If I am, please someone tell me how I should do when one of the drives fail (step by step). Cause in that situation I will be in a panic though I have another drive that backups my terastation once a week. It will make me feel comfortable when I know exactly what I have to do in situation when one drive fails. I wanna know how to seamlessly and without losing my data recover the situation that I have raid 5 array with 3 hard drives and one hot spare drive.
Thanks you so much for answering!  |
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NetworkGuy
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Post subject: RE: In case of a hard drive fails
Posted: Apr 27, 2012 - 02:25 PM CST
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Site Admin
Joined: Apr 18, 2005
Posts: 200
Status: Offline
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| Yes RAID 5 should work fine with 3 hard drives. Iif one drive fails (the NAS will tell you), you simply remove it and plug in the spare drive (your drive #4). The Terastation will rebuild the array, though it will take a while. |
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