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Forum Discussion
Hot Spare status
All, I have always wondered what the hot spare is doing while waiting to be put into action. Is it powered up and eating power or is it powered down until needed. Hopefully the latter is true...
The main drawback I see to a hot spare on a 4 bay NAS is that you then effectively have the capacity of only two of the drives, with one drive devoted to redundancy and one to the hot spare. I have a spare drive for my NAS, but it is in it's original sealed anti-static bag in a cabinet. With e-mail alerts, and the LED front panel giving warning, it seems to me that there is plenty of warning. That also gives me more on-line capacity on my 4 bay NAS.
I am not sure if the hot spare would help in case of a dual drive failure. If you lost a drive and it was automatically kicked in without you taking action or even knowing about it, and during the resync you lost a second drive would you lose the array? Of course on the six bay models, dual redundancy is offered which would relieve that situation. Of course in any case if all of your data is on a single device you would want to maintain a current and complete backup of all critical/important data.
I am not sure if the hot spare would help in case of a dual drive failure. If you lost a drive and it was automatically kicked in without you taking action or even knowing about it, and during the resync you lost a second drive would you lose the array? Of course on the six bay models, dual redundancy is offered which would relieve that situation. Of course in any case if all of your data is on a single device you would want to maintain a current and complete backup of all critical/important data.
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