[ale] raid suggestions

[Jeff Hubbs]

So we've all gone down all these different roads and we still don't have 
the hardware/usage story from the OP?

On 2/10/12 1:01 PM, Pat Regan wrote:
> On Fri, 10 Feb 2012 04:44:38 -0500
> Jim Lynch<ale_nospam at fayettedigital.com>  wrote:
>
>> Has the concern about the possibility of the hardware controller
>> breaking and being out of production been eliminated?
> Whether the card is out of production or not may not matter much in the
> middle of the day when the controller decides to fail.  You'll still
> either have to own a spare or you'll have to be able to actually
> purchase one nearby.  Depending on your scale, buying that spare may be
> a sizable amount of your server budget.
>
> Almost all the arguments I've seen in favor of using hardware instead of
> software RAID are either completely untrue or were a true for a short
> window around 10 years ago.
>
>> That of course can be alleviated by proper backups.  I always thought
>> that was somewhat meaningless in a lot of cases 'cause I'd think many
>> raid installations were to support a backup set of drives.  Not all,
>> of course, but surely that's a common purpose for a raid set.
> RAID is not a replacement for backups.  Your RAID only helps protect
> you from disk failures and reduce the risk of downtime.  It won't
> protect you from many kinds of data corruption or from user error.
>
> Pat
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