[CentOS] 40TB File System Recommendations

[Markus Falb]

On 12.4.2011 15:02, Marian Marinov wrote:
> On Tuesday 12 April 2011 15:56:54 rainer-RNrd0m5o0MABOiyIzIsiOw at public.gmane.org wrote:

> Yes... but with such RAID10 solution you get only half of the disk space... so 
> from 10 2TB drives you get only 10TB instead of 16TB with RAID6.

From a somewhat theoretical view, this is true for standard raid10 but
Linux md raid10 is much more flexible as I understood it. You could do 2
copys over 2 disks, thats like standard 10. Or you could do 2 copys over
2 or 3 or ... x disks. Or you could do 3 copys over 3 or 4 or ... x
disks. Do the math. See the manpage for md(4) and
http://en.wikipedia.org/wiki/Non-standard_RAID_levels#Linux_MD_RAID_10

However, I have to admit that I have no experience with that but would
like to hear about any disadvantages or if I am mislead. I am just
interested.

-- 
Kind Regards, Markus Falb

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