linux-raid.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Maurice Hilarius <maurice@harddata.com>
To: Hans-Peter Jansen <hpj@urpla.net>
Cc: linux-raid@vger.kernel.org, xfs@oss.sgi.com,
	linux-kernel@vger.kernel.org
Subject: Re: 3ware 9650SE-16ML w/XFS & RAID6: first impressions
Date: Sun, 07 Dec 2008 11:35:17 -0700	[thread overview]
Message-ID: <493C1765.7070901@harddata.com> (raw)
In-Reply-To: <200812071355.49427.hpj@urpla.net>

Hans-Peter Jansen wrote:
> Am Mittwoch, 3. Dezember 2008 schrieb Justin Piszcz:
>   
>> For read speed, it appears that there is some overhead (2x). With
>> software raid6 I used to get 1.0Gbyte/sec read speed, or at least
>> 800MiB/s across the entire array, now I only get 538MiB/s across the
>> entire array. However, write speed is improved. Before it was in the mid
>> 400s for RAID6 and peaking at 502MiB/s at the outer edge of the drives.
>> For the write speed now, its around 620-640MiB/s at the end of the array
>> and 580-620MiB/s going in further and 502MiB/s across the entire array. I
>> always heard all of the horror stories with 3ware cards, it turns out
>> they're not so bad after all.
>>     
>
> Hustin, if you're after speed, AND sane support, you may consider trying 
> Areca products. I'm biased, since 3ware fed me up completely, when it came 
> to a single drive failure in a RAID 5 setup: the support only provides an 
> ugly web interface: when posting my problem, they replied with:
>
>   
Nice Areca advertisement.

Of course you can demonstrate how their tech support responded, to a
similar DISK failure, with a better suggestion, and more promptly?

Buried for biased and irrelevant.


-- 
With our best regards,

//Maurice W. Hilarius         Telephone: 01-780-456-9771/
/Hard Data Ltd.                FAX:          01-780-456-9772/
/11060 - 166 Avenue         email:maurice@harddata.com/
/Edmonton, AB, Canada         http://www.harddata.com//
/     T5X 1Y3/
/


[[HTML alternate version deleted]]

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

  reply	other threads:[~2008-12-07 18:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-03 14:34 3ware 9650SE-16ML w/XFS & RAID6: first impressions Justin Piszcz
2008-12-07 12:55 ` Hans-Peter Jansen
2008-12-07 18:35   ` Maurice Hilarius [this message]
2008-12-08  8:37   ` Tom Walsh

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=493C1765.7070901@harddata.com \
    --to=maurice@harddata.com \
    --cc=hpj@urpla.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-raid@vger.kernel.org \
    --cc=xfs@oss.sgi.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).