Re: asm on san
From: Palooka <nobody_at_nowhere.com>
Date: Sat, 13 Dec 2008 18:51:01 +0000
Message-ID: <puT0l.29209$wp1.21195@newsfe19.ams2>
> The "baarf" crowd has been around a long time, back when companies
> allowed you to have a single server w/locally attached storage for your
> app. In most companies I have dealt with over the past - say 8-10
> years, you have a SAN cloud that your storage is carved from and you
> have NO control over how they maintain that storage. And not to
> mention the fact that you could be on an array with 10 other systems
> connected - competing for both bus bandwidth and spindle access due to
> the virtualization of the LUNs within that array. And when it comes to
> performance, as I stated, there are but a handful of systems that RAID10
> vs RAID5 would ever make any real difference in performance. If I
> needed to build one of those systems, you could bet it would be a
> completely dedicated environment.
Date: Sat, 13 Dec 2008 18:51:01 +0000
Message-ID: <puT0l.29209$wp1.21195@newsfe19.ams2>
Michael Austin wrote:
>
> The "baarf" crowd has been around a long time, back when companies
> allowed you to have a single server w/locally attached storage for your
> app. In most companies I have dealt with over the past - say 8-10
> years, you have a SAN cloud that your storage is carved from and you
> have NO control over how they maintain that storage. And not to
> mention the fact that you could be on an array with 10 other systems
> connected - competing for both bus bandwidth and spindle access due to
> the virtualization of the LUNs within that array. And when it comes to
> performance, as I stated, there are but a handful of systems that RAID10
> vs RAID5 would ever make any real difference in performance. If I
> needed to build one of those systems, you could bet it would be a
> completely dedicated environment.
Yes, I think that there is a lot in this. Perhaps it is time we specified what we require in terms of storage throughput and response, rather than how the SAN owners should achieve it.
Palooka Received on Sat Dec 13 2008 - 12:51:01 CST