Date: Mon, 20 Aug 2001 11:14:46 -0700 (PDT) From: Hodge Podge <nicole@unixgirl.com> To: Bryan-TheBS-Smith <b.j.smith@ieee.org> Cc: mike.wentz@3ware.com, freebsd-hardware@FreeBSD.ORG, Darryl Okahata <darrylo@soco.agilent.com> Subject: Re: 3ware stuff not ready for heavy duty useage-followup Message-ID: <XFMail.010820111446.nicole@unixgirl.com> In-Reply-To: <3B813DD5.A86E2016@ieee.org>
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On 20-Aug-01 Bryan-TheBS-Smith wrote: > Hodge Podge <nicole@unixgirl.com> wrote: >> Our Raid 5 array server that died durring rdisting of data >> recovered after removing the power for a moment ... It >> showed 2 failed drives however and rebuilding failed twice. > > Er, can you have 2 failed drives in a working RAID-5 array? Or am I > missing something here? I was assuming the presece of a hot spare. The failures I have been getting so far have been 1 drive fails.. the hot spare starts trying to kick in.. This taxes the other drive(s) and it (or some other) drive in the array (raid 5 or raid 10) fails before the hot spare even kicks in. > >> This doesn't help Nicole, but I can say that I have seen >> (two) intermittent power-up lockups with an Escalade 6200 >> -- lockups that an hard reset will not help. I have to do >> a full power cycle (but the raid 1 array is fine). > > I recently bought a 3Ware 6200. Before I did anything, I updated my > firmware (with the late June release) and then created the RAID-0 array > (two Maxtor 80GB drives). 0 problems so far at just under 2 months, I > hope I continue to have none either. I have a 3ware raid a well that so far has been A-ok. However it is not loaded much. The arrays so far have seemed ok, until loaded like a very busy server with lots of IO. SO far out of 4 servers attempted with the 3ware card.. not one has survived. Only my personal one which is obviosly less loaded. > > I'm now looking to buy a 4-channel and 8-channel card. I am on various > lists (XFS, Linux, NFS, etc...) where people have had issues with 3Ware > 6000-series cards with RAID-5 volumes, but no one is having issues with > RAID-0, 1 or 0+1 (aka 10). Plus the RAID-5 write performance on the > 6000-series is not optimal (although the 7000-series is supposed to > change that). So I think I'm going to stick with RAID-0+1 for these > drives, even if it means losing a 80-240GB in effective disk space > verses RAID-5 (160GB instead of 240GB on the 4-channel, and 320GB > instead of 560GB on the 8-channel). Yea.. Thats is my plan as well. Ideally I woudl prefer to have two servers.. mirroring each other in JBOD (so its a server mirror) But I am uncertain how to mirror the file systems thus far. However my boss has given up for now and we are going back to SCSI it seems. > > Any comments? I know this is a FreeBSD list, but I want to hear if > anyone has any comments on this. As I said before, I don't think it is a driver issue, or a FreeBSD issue, but more a, can IDE's take the abuse and how well can 3ware deal with the myriad of error reporing they told me is a problem with IDE drives. I have heard they wil soon have a way to remap around bad sectors on the fly, This would prevent them from having to drop the disk in the event of error reporting hopefully. Nicole > -- TheBS > > P.S. My target platform is Linux -- specifically RedHat 7.1 + SGI's XFS > 1.0.1 filesystem. I have been running XFS for over 6 months now without > an error. I cannot consider any other JFS because I have NFS clients > (and ReiserFS and JFS continue to have kNFSd issues), and I really want > the ACL support of XFS for Samba/Windows as well (which rules out Ext3, > which I love on kernel 2.2, but don't trust on kernel 2.4 yet). > > -- > Bryan "TheBS" Smith mailto:b.j.smith@ieee.org chat:thebs413 > Engineer Absolute Value Systems, Inc. http://www.linux-wlan.org > President SmithConcepts, Inc. http://www.SmithConcepts.com ******* |\ __ /| (`\ ******* * * | o_o |__ ) ) * * * * // \\ * * * Nicole Harrington | AKA Hodge Podge * ----------------------(((---(((-------------------------------- nicole@unixgirl.com http://www.unixgirl.com/ webmistress@dangermouse.org http://www.dangermouse.org/ nicole@deviantimages.com http://www.deviantimages.com/ -- Powered By Coca-Cola and FreeBSD -- "The world is run by those who show up" -- The Best Place for Your Web Site - www.WebWeaver.net -- ---------------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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