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Uh, never mind. The initial assumption was wrong: The hot spare didn't fail but another disk from the raid group failed during reconstruction. The array kept the disk alive as long as it could but some sectors were inevitably lost (double parity error on a single parity raid).


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Here's THE best solution if going to a H700 isnt possible. Enable cache directly from the firmware. YOU MUST be running on a battery backup or if power goes out you could be hosed by enabling the cache. Below is a tutorial explaining the full process to do so. http://www.1337admin.org/windows-server/windows-server-2012-r2/dell-h200-raid-controller-speed-...


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If your file systems report they're intact, and data is not corrupted, you're lucky. Make a full backup NOW! This is always you should do first when you see your storage system is messed up, i.e. behaves strangely. I didn't get completely, which RAID technology you use. Intel does not make RAID chips, they offer either rebranded LSI MegaRAID or "Intel Matrix ...


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it's unlikely your RAID is going to rebuild, unfortunately. you may try removing the spare, then sticking it back in after you've rebooted once. this MAY cause it to revisit and try to re-read. it's highly discouraged to use non-similar drives. In fact, we (my business) won't even manage systems which don't have matching drives (same mfr, same model), due ...


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You cannot create a new RAID in a degraded state with PERC controllers. You'll need to use drives that are "unconfigured good" and presently in the system. I would recommend simply creating a RAID6 with the four drives that you have, then expanding with two added drives when you have them. If you really need the full four drives of capacity to start with, ...



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