From: Chris Chabot <chabotc@reviewboard.com>
To: unlisted-recipients:; (no To-header on input)@localhost.localdomain
Cc: Mukund Ingle <inglem@cisco.com>, linux-kernel@vger.kernel.org
Subject: Re: Quick question on Software RAID support.
Date: Wed, 13 Feb 2002 02:47:18 +0100 [thread overview]
Message-ID: <3C69C5A6.4020409@reviewboard.com> (raw)
In-Reply-To: <E16aoUH-0003mY-00@the-village.bc.nu>
Alan Cox wrote:
>>1) Does the Software RAID-5 support automatic detection
>> of a drive failure? How?
>>
>
> It sees the commands failing on the underlying controller. Set up a software
> raid 5 and just yank a drive out of a bay if you want to test it
This is also why software raid 5 + IDE is a bad combo. It has a high
chance of locking up the IDE controller, and requiring you to power down
& fix the system before reconstruction can commence. However with SCSI
hot-swapable solutions, on-the-fly reconstruction after failure works
perfectly.
>>2) Has Linux Software RAID-5 been used in the Enterprise environment
>> to support redundancy by any real-world networking company
>> or this is just a tool used by individuals to provide redundancy on
>> their own PCs in the labs and at home?
>>
>
> Dunno about that. I just hack code 8)
I am using software raid 5 and several Dell PowerEdge 2550 servers
(since the hardware raid was to slow for some heavy IO operations), with
great results. We have had 5 seperate disk failures so far, and no
problems what so ever. Either the spare disk kicked right in, or after
adding the new drive, reconstruction work perfectly.
I don't know if 20 PE2550 servers qualifies as a 'enterprise' solution,
but it works great for the kinds of thing we are doing
--Chris
next prev parent reply other threads:[~2002-02-13 1:51 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-13 1:34 Quick question on Software RAID support Mukund Ingle
2002-02-13 1:45 ` Alan Cox
2002-02-13 1:47 ` Chris Chabot [this message]
2002-02-13 4:10 ` Bill Davidsen
2002-02-13 9:24 ` Francois Romieu
2002-02-13 2:19 ` Rob Landley
2002-02-13 10:33 ` Marco Colombo
2002-02-13 11:15 ` Alan Cox
2002-02-13 14:25 ` Marco Colombo
2002-02-13 18:30 ` Mark Cooke
2002-02-13 21:33 ` Ville Herva
2002-02-13 21:54 ` Vojtech Pavlik
2002-02-13 22:12 ` Ville Herva
2002-02-15 23:48 ` Mark Cooke
2002-02-16 17:01 ` VIA KT133 (was: Re: Quick question on Software RAID support.) Ville Herva
2002-02-14 19:05 ` Quick question on Software RAID support Pavel Machek
2002-02-13 18:57 ` Thomas Schenk
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=3C69C5A6.4020409@reviewboard.com \
--to=chabotc@reviewboard.com \
--cc=inglem@cisco.com \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.