Re: debian on a raid5 (4TB) issues
On Sat, 17 Apr 2010 03:34:36 +1000, Tim Clewlow wrote:
>> Hi, maybe OT but, I\m trying to install debian lenny on a raid5 with
>> 4TB. OS sees one big sda with 4TB, I can particion /boot, / and swap
>> but it only recognize 78GB instead the 4TB available. Is this because
>> the partition in booteable? Can I install debian OS on this hdd with
>> these 3 partitions and use the rest for LVM? Thanks in advance,
>>
> .
>
> Seriously consider using Raid 6. If you use Raid 5 then the probability
> of an unrecoverable read error (URE) occurring while rebuilding the 4TB
> of data is IMO a little too high. With Raid 6 it would require 2 URE's
> that happen to be located in the same raid segment on both disks - the
> odds of that are extremely low.
>
> my 2c,- tim
+1
Rebuilding time in a 4-TB RAID5 volume will take more than 8 hours (in
best-case scenario), time enough for another disk gets dropped from the
array and so loosing data :-/
Greetings,
--
Camaleón
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