hot swappable SATA controllers for Linux

Lance Reed lreed at
Wed Sep 19 09:59:34 UTC 2007

Thanks for the great input!

Ask Bjørn Hansen wrote:
> On Sep 18, 2007, at 1:06 PM, Lance Boomerang wrote:
>> I am looking to build out a fairly dense setup with nodes having 8 or 
>> so SATA drive slots for about 6 TB per node.
>> Initially plan to have 6 of these nodes.   Obviously at this level of 
>> density I  need to be able to hot swap a drive if one goes bad.  I 
>> was wondering what folks have seen in terms of real work use of 
>> various SATA controllers out there.
> Aren't most/all SATA controllers hot-swap by now?   Check 
> before you buy and you should 
> be in good shape.   I thought it was part of the SATA spec and the 
> only controllers that didn't support it was "bridged" PATA controllers.
> Typically for MogileFS devices it's a waste of money buying a fancy 
> SATA controller.  (If you do want one, then the new 3Ware ones are 
> pretty good - the ones from 3-4 years ago not so much).
>  - ask

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