FORUMS: list search recent posts

Sonnet Fusion R800 RAID - self-ejecting

COW Forums : RAID Set-Up

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
Steve GERGES
Sonnet Fusion R800 RAID - self-ejecting
on Nov 19, 2013 at 10:19:59 am

Hello... from recently i'm facing a strange behavior of my Sonnet R800 Raid system as it's ejecting itself without further notice (mostly during copies or rendering)....

did anyone have such a behavior before with this type of raid?

i'm running on osx 10.7.5 on an intel macpro (older model)if this is of any help

Steve - Art Director - http://www.remedia.lu


Return to posts index

EricBowen
Re: Sonnet Fusion R800 RAID - self-ejecting
on Nov 20, 2013 at 10:11:46 pm

What Raid level are you running? If a parity raid, have you ran a parity verification recently?

Eric-ADK
Tech Manager
support@adkvideoediting.com


Return to posts index

Rainer Wirth
Re: Sonnet Fusion R800 RAID - self-ejecting
on Nov 28, 2013 at 4:02:09 pm

Hi Steve,

this could be anything. I assume you are on Raid5 or 6.
It could be a loose or defect SAS cable.
It could be a drive just before failure - it is still blue, but doesn't work properly. Do some intensive writes on the raid, until the defect drive goes red. Until then you really don't know which drive is bad. Then you can replace the drive and rebuilt the array.
It could be a defect backplane (very unlikely, but possible) In this case you need a new chassis.
My bet is a bad harddisc. What HD's do you use?

cheers

rainer

factstory
Rainer Wirth
phone_0049-177-2156086
Mac pro 8core
Adobe,FCP,Avid
several raid systems


Return to posts index


Steve GERGES
Re: Sonnet Fusion R800 RAID - self-ejecting
on Nov 28, 2013 at 4:22:30 pm

hi there... yes i'm on raid 5. i contacted sonettech support and they made me do a bunch of tests, send them logfiles etc... and in the end told me to update the drivers and flash the card.... which resulted in not being able to mount the RAID today (i did it today) i wrote them back to get some help, but haven't heard from them so far.....

The raid still shows up in teh ATTO tool and disk utility so i'm not paniking too much for the moment but would be glad to have it back online soon....

in regard of the drives used i dont remember which ones but i know that one isnt working anymore when i rebuild the raid some months ago i left it out of the system, so for my understanding thsi shouldnt be an issue (or am i wrong here ?) they all do light up bluen / green for the moment.

Steve - Art Director - http://www.remedia.lu


Return to posts index

EricBowen
Re: Sonnet Fusion R800 RAID - self-ejecting
on Nov 29, 2013 at 5:48:24 pm

When you say left it out of the system, did you replace that drive then?

Eric-ADK
Tech Manager
support@adkvideoediting.com


Return to posts index

Steve GERGES
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 2, 2013 at 8:57:01 am

no i haven't.. .should i ?

Steve - Art Director - http://www.remedia.lu


Return to posts index


Steve GERGES
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 4, 2013 at 8:21:21 am

ok...the support told me to update the drivers and flash the card and send them a new diagnostic file... which i did, and now the RAID system isn't mounting at all anymore :(

i still see it in the ATTO tool and disk utility but i'm unable to mount it.... i also haven't heard from them in days which isn't cool....


any ideas on what could be the cause of this !? i suppose the flashing of the card might be the problem, but have no idea on how to fix it.

Steve - Art Director - http://www.remedia.lu


Return to posts index

EricBowen
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 4, 2013 at 3:37:29 pm

Yes you needed to replace that drive so that raid would have rebuilt from Degraded state. Now if another drive has completely failed the data would be lost. You need to do that and then see if the other drive acting up will come back online long enough to get the first 1 rebuilt.

Eric-ADK
Tech Manager
support@adkvideoediting.com


Return to posts index

Chris Murphy
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 5, 2013 at 8:16:46 am

Updating drivers, flashing firmware, must always be preceded with a backup. Unless the data is disposable. I'd call support and wait on the phone until they get you to someone more senior who can answer your questions, primarily how to get the array to mount which should be possible whether it's degraded or not.

If the data isn't disposable, and isn't backed up, and me not having seen the log files, I would avoid mounting the array read-write and instead mount it read only and start copying files off the thing. If this is a Mac this can be done first with 'diskutil unmount /dev/diskXsY' and then with 'diskutil mount readonly /dev/diskXsY' command, where XY are the node/slice numbers for the volume which you can get from 'diskutil list'. Then you can do a file copy and not make any changes to the state of the array or its underlying disks.

As for replacing the dead drive and letting it rebuild, yeah you could do that, but the rebuild will be slow and will slow down the file copy. If you seriously don't have current backups, your strategy needs to be a lot more conservative and I think it's more conservative to mount the array read only and start file copying, than rebuilding a new drive. Depending on the drive size that'll take hours, maybe 1/2 a day.

What drives are these?


Return to posts index


Steve GERGES
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 5, 2013 at 8:35:25 am

thanks for your insights Chris.... support got back to me today and told me to "turn off the NCQ setting on the R380. On the R380, the NCQ
setting should be disabled." which i did... i rebooted the mac to see if hte raid will come back to life... but it got worse !

beforehand i was able to at least see my old raid setup in diskutil and atto tool, but now it looks like it went back to a blank raid system stating the rebuilding had been interrupted !!!!!

i have no backup of my files, as i didn't think that updating drivers and such could mess up this much (and support didn't tell me neither) F**K !!! i hope i'm not screwed...

i cannot tell exactly which drives are in there as i'm no IT specialist, just a regular guy trying to figure out to get my stuff to work again.

Steve - Art Director - http://www.remedia.lu


Return to posts index

Chris Murphy
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 5, 2013 at 9:25:25 am

No backup at all? That is a very, very different situation than not having a current backup. I'm not sure where the idea of RAID being a backup came from, but it has certainly convinced all too many people that they can forgo backups, because hey, a drive might die, but the array won't. Or something like that. But nothing could be farther from the truth. RAID is about uptime. It's about the availability of data. It's not a backup. Anyway, I suggest you schedule the appropriate flogging for another time because you really need to better understand the basics of how fragile this stuff is, how incredibly disproportionate the penalties are for not being prepared for the inevitable disaster. The only thing you don't know is the scope of the future disaster. This one looks pretty bad but it's made worse without backups.

You're basically in a disaster recovery situation now. It's really important that no further changes be made to the data on disk. The more changes that are made, statistically your situation gets worse. It's possible to stumble forward in the correct direction, it's much more likely a mistake will be made and things will get even worse.

If the hardware is designed and tested to work together, NCQ shouldn't be a factor, it's just a SATA command queueing algorithm so that the controller and drive can most efficiently fulfill read/write requests. If it's set too high or too low, performance is degraded. But it's possible there are bugs which can cause read/write errors.

Press the company for more help, but make it clear to them you do not have backups, you can't afford to take risks, including mounting the array read only or rebuilding it. I personally wouldn't rebuild this array until I had identical sector copies of every drive. If you don't know how to do that, you're going to have to learn how or prepare to budget for data recovery service. Also ask Sonnet support what RAID metadata format they're using. Is it proprietary? DDF? IMSM?

When you've exhausted your options with Sonnet support, press them for a referral and discount code for a data recovery service. Call them and get a quote. This will be one of the phases of your flogging for not having a backup. RAID data recovery is really f'n expensive, so prepared for sticker shock. Report back when you have an update.

At least with linux software RAID, there is a way to force assemble an array that writes no metadata to any of the drives, and does not mount the array. Then it's possible to mount the degraded assembled array read only and start extracting data. There's certainly a similar procedure here, but I can't tell you how agreeable Sonnet is in sharing this information, it may very well be that specialized data recovery companies have had to reverse engineer this process which is one of the reasons why I'm very skeptical of proprietary encodings.

Anyway, you have some homework to do.


Return to posts index

Steve GERGES
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 5, 2013 at 8:55:21 am

chris i did try the 'diskutil list'. in terminal but am not seeing the RAID :S

Steve - Art Director - http://www.remedia.lu


Return to posts index


EricBowen
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 5, 2013 at 4:12:30 pm
Last Edited By EricBowen on Dec 5, 2013 at 4:13:15 pm

Trying to Rebuild the Array from the other drives should not change the status of the other drives nor should it change any data on those drives which can still be block copied later. The idea here is simple. Get the array online long enough to get the critical data off. A failing drive normally has a limited lifespan before total failure so the window is short. Trying other fixes before dealing with the data is wasting that limited time and forcing the issue to be very expensive data recovery. You can contact me directly via email if you can get another drive and have time for me to remote in and check the Atto panel. There still may be a chance here but I can guarantee you the clock is ticking if so.

Eric-ADK
Tech Manager
support@adkvideoediting.com


Return to posts index

Steve GERGES
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 5, 2013 at 4:34:52 pm

hi eric and thanks for your help... the machine is actuallybusy at the moment but will be free tomorrow ! so i might contact you.... are you US based ? as i'm in europe i'm not sure bout our timeframe !? (its actuall 17h30 here at this moment)

Steve - Art Director - http://www.remedia.lu


Return to posts index

EricBowen
Re: Sonnet Fusion R800 RAID - self-ejecting
on Dec 5, 2013 at 6:11:25 pm

Yes email sent.

Eric-ADK
Tech Manager
support@adkvideoediting.com


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]