From: Joe Landman <joe.landman@gmail.com>
To: Ed W <lists@wildgooses.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: HBA Adaptor Advice
Date: Mon, 23 May 2011 07:55:03 -0400 [thread overview]
Message-ID: <4DDA4B17.7060806@gmail.com> (raw)
In-Reply-To: <4DDA41B2.8010003@wildgooses.com>
On 05/23/2011 07:14 AM, Ed W wrote:
> Getting back on track of specific adaptor advice:
>
> To recap: I am looking for ideas on what to buy to upgrade our small
> office servers (not really stretched, just adding more backup disks and
> similar). My main requirement is to be able to buy equipment in single
> lots (one server at a time) and so I require the ability to take an
> array from one machine and use it in another machine using a different
> adaptor - therefore the previous thread has dissuaded me from looking at
> adaptors with writeback cache (and also hardware raid controllers)
>
> Therefore can I see a show of hands for "good value" HBA adaptors with
> 8, 12 and 24 ports? Ideally using fewer PCI slots is preferred and
> onboard expanders rather than separate expanders are preferred
Be aware that this won't be cheap. Also be aware that many (most)
expandor designs are performance limited due to their implementations.
We see significant contention from bandwidth oversubscription in every
day situations, regardless where the expandor is.
On the HBA side
http://www.lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas/internal/sas9201-16i/index.html
On the hardware RAID side of this:
http://www.lsi.com/storage_home/products_home/internal_raid/megaraid_sas/value_line/megaraid_sas_9260-16i/index.html
LSI controllers as HBAs are reasonably good. Make sure you update your
drivers and firmware to late revisions.
> Seems that previously we discovered that most LSI RAID cards were well
> supported and Marvel cards were frequently not. Does this
> generalisation persist with pure HBA cards also?
>
> I can see the list of LSI HBA cards on their site, but any pointers for
> good value HBA adaptors appreciated? (Current chassis will be a tower
> chassic, but future upgrades are expected to be Supermicro/Norco 3/4U
> rack boxes)
> (is there a page on the wiki already covering any of this that we could
> try and distil this wisdom to?)
Don't skimp on power supply, or power distribution. RAIDs hate that.
Don't skimp on cooling. Drives hate that.
Regards,
Joe
--
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics, Inc.
email: landman@scalableinformatics.com
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next prev parent reply other threads:[~2011-05-23 11:55 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-23 11:14 HBA Adaptor Advice Ed W
2011-05-23 11:55 ` Joe Landman [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-05-23 2:11 HBA Adaptor advice Jim Schatzman
2011-05-23 3:39 ` Tobias McNulty
2011-05-23 10:42 ` Ed W
2011-05-19 12:26 Ed W
2011-05-19 12:36 ` Roman Mamedov
2011-05-19 12:43 ` Mathias Burén
2011-05-19 14:06 ` Michael Sallaway
2011-05-19 19:10 ` Thomas Harold
2011-05-19 21:12 ` Rudy Zijlstra
2011-05-19 21:07 ` Brad Campbell
2011-05-20 20:58 ` Tobias McNulty
2011-05-20 21:23 ` Brad Campbell
2011-05-20 2:08 ` Andy Smith
2011-05-20 5:30 ` Stan Hoeppner
2011-05-21 9:52 ` Ed W
2011-05-20 7:33 ` Ed W
2011-05-20 10:21 ` Stan Hoeppner
2011-05-21 11:17 ` Ed W
2011-05-21 11:29 ` Rudy Zijlstra
2011-05-21 11:54 ` Ed W
2011-05-21 17:37 ` Leslie Rhorer
2011-05-22 9:41 ` Stan Hoeppner
2011-05-22 10:03 ` Rudy Zijlstra
2011-05-23 9:32 ` Ed W
2011-05-21 17:05 ` Leslie Rhorer
2011-05-22 9:04 ` Stan Hoeppner
2011-05-22 10:09 ` Brad Campbell
2011-05-22 19:25 ` Stan Hoeppner
2011-05-22 20:57 ` Tobias McNulty
2011-05-22 21:13 ` Johannes Truschnigg
2011-05-23 9:48 ` Ed W
2011-05-23 10:44 ` John Robinson
2011-05-22 23:19 ` Brad Campbell
2011-05-23 4:09 ` Roman Mamedov
2011-05-23 5:54 ` Brad Campbell
2011-05-23 6:08 ` Roman Mamedov
2011-05-23 10:42 ` Stan Hoeppner
2011-05-23 11:35 ` David Brown
2011-05-23 6:54 ` Stan Hoeppner
2011-05-23 7:23 ` Brad Campbell
2011-05-22 23:44 ` Brad Campbell
2011-05-23 0:07 ` Brad Campbell
2011-05-23 5:30 ` Stefan /*St0fF*/ Hübner
2011-05-23 10:18 ` Ed W
2011-05-23 9:58 ` Stan Hoeppner
2011-05-23 10:33 ` Ed W
2011-05-23 11:21 ` Stan Hoeppner
2011-05-20 12:18 ` Joe Landman
2011-05-20 12:34 ` Roman Mamedov
2011-05-20 12:36 ` Mathias Burén
2011-05-20 12:48 ` Joe Landman
2011-05-20 13:21 ` Ed W
2011-05-20 14:23 ` Joe Landman
2011-05-20 20:01 ` Andy Smith
2011-05-20 20:12 ` Stan Hoeppner
2011-05-20 20:24 ` Drew
2011-05-20 20:58 ` Stan Hoeppner
[not found] ` <4DD7A100.2010807@wildgooses.com>
2011-05-22 8:13 ` Stan Hoeppner
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