[Bio-Linux] Fresh install - partitioning?

[Tony Travis]

On 16/10/14 16:30, James Mategko wrote:
> Hi All,
>
>   The following calculator is very helpful when planning arrays:
> http://www.raid-calculator.com/default.aspx
>
> I use RAID 5 most of the time since I tend to work with my datasets in
> memory rather then write intermediate steps to disk. I'm planning on
> moving to RAID 10 when larger capacity HP ProLiant compatible HDDs/SSDs
> come down in price.

Hi, James.

RAID5 is risky with large disks because there is a significant chance of
a second disk failing during a rebuild after a single disk failure. This
is especially true if all your disk are the same make and bought at the
same time. RAID6 is now recommenced instead of RAID5 because it can
survive a double-disk failure. However, as I said, I think Btrfs is a
better alternative now BUT Btrfs RAID6 is highly *experimental* even
thought Btrfs RAID0, 1, 10 is more or less ready for production use.

You might be interested in this:

> http://www.oaktable.net/content/baarf-battle-against-any-raid-5

Bye,

  Tony.

--
Dr. A.J.Travis, University of Aberdeen, Institute of Biological and
Environmental Sciences, Cruickshank Building, St. Machar Drive, Aberdeen
AB24 3UU, Scotland, UK. tel +44(0)1224 272700, fax +44 (0)1224 272 396
http://www.abdn.ac.uk, mailto:tony.travis at abdn.ac.uk, skype:ajtravis


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