From: Jeff Garzik <jgarzik@pobox.com>
To: Clemente Aguiar <caguiar@madeiratecnopolo.pt>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Adaptec AIC-79xx HostRaid
Date: Mon, 30 May 2005 14:03:50 -0400 [thread overview]
Message-ID: <429B5586.8040004@pobox.com> (raw)
In-Reply-To: <6A0C419392D7BA45BD141D0BA4F253C776F2@loureiro.madeiratecnopolo.pt>
Clemente Aguiar wrote:
>>On Mon, May 30, 2005 at 06:13:03PM +0100, Clemente Aguiar wrote:
>>
>>>Hello,
>>>
>>>We have acquired some IBM xServers which have an integrated raid
>
> controller
>
>>>based on the Adaptec AIC-79xx U320 SCSI controller (called HostRaid).
>>>
>>>Is there already support for HostRaid? Are there drivers for it?
>>>>From which kernel version and where do I find it in the config?
>>
>>HostRaid is just software RAID; you can ignore it and let Linux use the
>>underlying SCSI devices via the standard aic79xx driver.
>>
>> Jeff
>
>
> What do you mean it is just software RAID? Can you explain?
> On the servers there is a configuration option to enable HostRaid, and when
> I turn that option ON the mirroring between the two discs start and after a
> while they are mirrored.
> I think that in terms of performance it should be better to used the
> "on-board" HostRaid facility.
> Don't you think so?
HostRaid is not on-board. It is provided by your system CPU, through
the card's BIOS and the OS driver.
HostRaid is software RAID, just like Linux's md.
Jeff
next prev parent reply other threads:[~2005-05-30 18:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-30 17:48 Adaptec AIC-79xx HostRaid Clemente Aguiar
2005-05-30 18:03 ` Jeff Garzik [this message]
[not found] <49Zx1-8ne-21@gated-at.bofh.it>
[not found] ` <49ZZT-qS-29@gated-at.bofh.it>
2005-05-30 23:54 ` Robert Hancock
-- strict thread matches above, loose matches on Subject: below --
2005-05-30 20:52 Eric Jones
2005-05-30 21:06 ` Arjan van de Ven
2005-05-30 17:13 Clemente Aguiar
2005-05-30 17:21 ` Jeff Garzik
2005-05-30 18:01 ` Jeff Sipek
2005-05-30 18:05 ` Jeff Garzik
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=429B5586.8040004@pobox.com \
--to=jgarzik@pobox.com \
--cc=caguiar@madeiratecnopolo.pt \
--cc=linux-kernel@vger.kernel.org \
/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