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List:       linux-raid
Subject:    Re: Drives of same model in RAID 1/10 ?
From:       Justin Piszcz <jpiszcz () lucidpixels ! com>
Date:       2006-07-25 11:48:21
Message-ID: Pine.LNX.4.64.0607250748050.31045 () p34 ! internal ! lan
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On Mon, 24 Jul 2006, Andy Smith wrote:

> On Mon, Jul 24, 2006 at 07:46:21PM +0100, Mark Hellman wrote:
>> I am in the process of deciding which SATA-II drives should I choose for an
>> external RAID system. I heard that it was safer to choose drives from
>> different manufacturers to reduce the chance of near-simultaneous failure
>> due to model-specific issues.
>> Is this so?
>
> It's certainly safer.. whether you think it is worth the trouble is
> your call.
>
>> And are there other potential problems related with choosing drives from
>> different manufacturers?
>
> The only issue is the obvious one that the manufacturers are usually
> fairly vague about the exact usable size of each disk.  If you
> bought half the disks from one manufacturer and half from another
> then you should be able to pair them up and use the minimum of the
> size of each pair.
>
> Cheers,
> Andy
>

So far the WD 400GB -KD drives and Seagate 400GB seem to have the same 
amount of sectors.

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