Re: Partition Size/performance
From: Bjorn Landemoo (mvp2.REMOVE_at_landemoo.com)
Date: 03/10/04
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Date: Wed, 10 Mar 2004 21:02:42 +0100
Mike
The worst thing that could happen would be...nothing. That would feel
uneasy. I have had software raid that behaved like this for six months,
after a mystical error. At last, hell broke lose. Turned out to be bad
contact between motherboard and SCSI controller.
Could the difference in behavior from BIOS and the Windows tool be
explained by that the Windows version might be aware about an error
reported from the drive cage driver?
Best regards
Bjorn
-- Bjorn Landemoo - mvp2@landemoo.com - http://landemoo.com/ Microsoft MVP - Windows Server Networking "Mike Brearley" <mike_brearleyNOSPAM@DONTDOIThotmail.com> wrote: >I've swapped two drive cages... now to wait and see. As of right now, >everything is still up and running. I'm thinking possibly a SATA cable may >be the issue rather than the promise card or the superswap's, I really don't >know. We'll see. If the same drive goes off, I'll swap the cable and see >what happens after that. > >Actually, I need to contact promise as well. When a drive goes offline, >it's reported as Free in the BIOS level raid utility, but in the Windows >version (PAM) it's shown as offline and I can't do a thing with it (even >after a reboot). This is a problem because it makes the idea of hot swap go >right out the window. I'm forced to go into the BIOS utility, create a JBOD >array with that single disk, boot into windows, start up the promise array >management software (pam), delete the new jbod array and then I can re-build >the raid-5 array with the now online disk. What a PAIN!! lol > >-- >Posted 'as is'. If there are any spelling and/or grammar mistakes, they >were a direct result of my fingers and brain not being synchronized or my >lack of caffeine. > >Mike Brearley > > >"Bjorn Landemoo" <mvp2.REMOVE@landemoo.com> wrote in message >news:o26s40dv4m7b0gvb1bcptsdmoh8bl5pute@4ax.com... >> Mike >> >> If there, for instance, is something wrong with the SATA contact in the >> drive cage, it might still be reported as on line by the drive cage, while >> the controller might have another opinion... This would explain your >> performance issue. >> >> Swapping drive cage will reveal if it is at fault, next time a disk goes >> off. Probably it will be the disk that you swapped into this same drive >> cage. >> >> Best regards >> >> Bjorn >> -- >> Bjorn Landemoo - mvp2@landemoo.com - http://landemoo.com/ >> Microsoft MVP - Windows Server Networking >> >> "Mike Brearley" <mike_brearleyNOSPAM@DONTDOIThotmail.com> wrote: >> >> >Strangely enough, no. I guess saying that it goes offline isn't quite >the >> >right way to put it. The monitoring for it is unavailable and the >> >controller card states that it's offline, however the lights on it are >still >> >active and show it as online. >> > >> >Everything was working for about 3 days until last night around 1 am I >> >received an e-mail from the management utility stating the drive went >> >offline. I have yet to swap everything around as promise wanted me to >> >because I haven't had the time. I'm preparing for it now and will >probably >> >try it tonight or tomorrow. >> > >> >-- >> >Posted 'as is'. If there are any spelling and/or grammar mistakes, they >> >were a direct result of my fingers and brain not being synchronized or my >> >lack of caffeine. >> > >> >Mike Brearley >> > >> > >> >"Bjorn Landemoo" <mvp2.REMOVE@landemoo.com> wrote in message >> >news:6erh401nbvm74sgteinlq7l9dlrc4c5l29@4ax.com... >> >> Mike >> >> >> >> Doesn't the controller lose contact with a hard drive when the >enclosure >> >> goes offline, practically meaning that the disk also goes offline? >> >> >> >> Sorry for all my questions, my experience is with SCSI RAID with a >> >> backplane, or with software RAID. I haven't had the opportunity to play >> >> with IDE or SATA RAID, yet. By the way, 3ware seems to have nice >> >backplanes >> >> for four SATA drives that will fit in two 5½" slots. >> >> >> >> Best regards >> >> >> >> Bjorn >> >> -- >> >> Bjorn Landemoo - mvp2@landemoo.com - http://landemoo.com/ >> >> Microsoft MVP - Windows Server Networking >> >> >> >> "Mike Brearley" <mike_brearleyNOSPAM@DONTDOIThotmail.com> wrote: >> >> >> >> >There is monitoring available and it tells me when a disk goes >offline, >> >but >> >> >not when a drive enclosure goes offline. I called promise and now I >need >> >to >> >> >swap two drive cages around (the one that's going offline with another >> >one). >> >> >So that means I have to move the physical units around as the cables >> >Promise >> >> >gives you to daisy chain the enclosures together for the monitoring is >> >just >> >> >long enough to go from one unit on top to the unit directly beneath >it. >> >> >Otherwise, I could have just moved the sata cable and re-arranged how >one >> >> >enclosure was linked to the other. :( >> >> > >> >> >I'll do that over the weekend and see what happens... >> >> >> > >> >
- Next message: Torgeir Bakken (MVP): "Re: Monitor Log off time and on time"
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