Latest post Tue, Apr 3 2018 2:32 PM by Jeroen van Eekeres. 6 replies.
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  • Fri, Mar 23 2018 4:13 PM

    • mnbkyle
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    • Joined on Tue, Sep 15 2015
    • Minneapolis, MN
    • Posts 27
    • Points 335

    ISIS 5500 Disk Performance Degraded

    Hey all - I'm geting Disk Performance Degraded warnings on our ISIS 5500. It keeps referring to DISK 1. I'd like to replace the ISB but none of the LED indicator lights are red so I'm not sure which one to replace.

    A couple questions:

    1) Is DISK 1 referring to the ISB in the very top left of the 16 ISB's?

    2) What is the procedure for replacing? Simply pull out the defective ISB and insert the spare? Do I need to shut down the ISIS before replacing or leave everything running?

    See System Logs:

    Filed under: , , , , ,
  • Sat, Mar 24 2018 12:17 PM In reply to

    Re: ISIS 5500 Disk Performance Degraded

    Hi Kyle.

    The disk 1 is related to 1 of the 3 raid sets inside the isis. Not to an ISB with a microcontroller with its own IP as found in isis 7000.

    What you need to do is to open the LSI (now called Avago) megaraid storage manager utility on the isis. It should be installed by default but you can also dowload it from Avid here:

    http://avid.force.com/pkb/articles/en_US/faq/MegaRaid-software-for-the-following-products 

    In there you will find all 16 drives and you need to find if and how many drives show an elevated media error count.

    Healthy drives show 0 and from experience seeing a drive with less than 10 is not worrying. When you see the degration you mention, you will find 1 or more drives with a much higher media error count, like >100 or even >1000. Although not failed yet you should replace these drives with new drives from Avid.

     

    From the old Apple Quadro 950 to HP Z8xx. My current own system: 1x Z420 E5 1650 16GB memory, 128GB SSD, 1x XW8600, 2x 3.0Ghz Quadcore, 12GB memory... [view my complete system specs]

    Jeroen van Eekeres 

    Technical director, Broadcast support engineer, Avid ACSR.

     

    Always have a backup of your projects....Always!!!! Yes Always!!!!

    A.V.I.D....... Another Version In Development

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  • Mon, Mar 26 2018 3:18 PM In reply to

    • mnbkyle
    • Not Ranked
    • Joined on Tue, Sep 15 2015
    • Minneapolis, MN
    • Posts 27
    • Points 335

    Re: ISIS 5500 Disk Performance Degraded

    Thanks for the reply! I've installed the MSM software and have identified Slot 8 as the failing driving with a media error count of 193.

    I know ISIS 5500 is mostly an automated process - would you recommend waiting for the ISB to fail, and let the ISIS redistrubute to the spare, then replace? or swap it out before then? And if swapping immediately - can this be done while the ISIS is running?

    I have a new spare ready, I'm just trying to get this process firmly understood before pulling out the ISB.

  • Mon, Mar 26 2018 5:22 PM In reply to

    Re: ISIS 5500 Disk Performance Degraded

    I would only force failover if it is actually causing you issues. Often "network degraded" can be safely ignored.

     

    If users are having performance or stability issues (bin not saving, crashing, etc.) then you can pull the dying drive and force drive recovery to the hot spare.

    Make sure you confirm it is the correct drive. Check the serial number before you pull it.

     

     

     

     

    MC 8.6.1, Windows 10, ASROCK X99M, Intel 5930K, Zotac GTX970, 32GB RAM, Transcend 512GB M.2 SSD & Dell U2713H. MBP 2012 Thunderbolt, OSX 10.10.5, MC... [view my complete system specs]
  • Fri, Mar 30 2018 3:26 PM In reply to

    • mnbkyle
    • Not Ranked
    • Joined on Tue, Sep 15 2015
    • Minneapolis, MN
    • Posts 27
    • Points 335

    Re: ISIS 5500 Disk Performance Degraded

    Thanks Dom,

    We weren't experiencing performance issues until just today. I'm trying to transcode AMA linked XAVC FS7 Media, a common procedure, and I keep getting the following error message:

    Exception: DIDReader::XraiseUnexpectedStreamStatus async file system error.

    This also happens when trying to transcode AMA linked XDCAMEX media.

    Do you think this is a sign to force failover?

  • Sat, Mar 31 2018 9:45 PM In reply to

    • mnbkyle
    • Not Ranked
    • Joined on Tue, Sep 15 2015
    • Minneapolis, MN
    • Posts 27
    • Points 335

    Re: ISIS 5500 Disk Performance Degraded

    SOLVED: I've replaced the degraded ISB. What follows are the steps I took after the recommendations in this thread:

    -downloaded MegaRaid Storage manager onto the ISIS. Logged into the IP to display the slot configuration.

    -located slot 8 which listed a media error count of over 500. All others had a count of zero.

    -right clicked on slot 8 - select locate - One of the 16 ISB's began blinking a single red indicator light. Slot 8 ISB confirmed. Took photo of slot 8 ISB SN displayed by MSM.

    -Disconnected all workstations from ISIS

    -Pulled ISB in slot 8 forcing failover. Confirmed SN on physical drive with photo taken. Confirmed, pulled the correct ISB.

    -MSM displays the hotspare ISB turned into an active ISB

    -Insert Cold Spare ISB into empty slot.

    -ISIS management console confirms drive is rebuilding, slowly but surely.

     

    Here are some performance issues that led me to force failover:

    *async file system error
    *failed to get sample size from ama plugin
    *unable to transcode ama linked media
    *unable to complete an MXF OP1a sequence export (no error message displayed, just failed to export a file)

    Since replacing the ISB these errors have stopped and we're back to normal :)

     

     

  • Tue, Apr 3 2018 2:32 PM In reply to

    Re: ISIS 5500 Disk Performance Degraded

    Well done!

    Most of the MC/NC, Interplay, Nexis, ISIS, Unity stuff. [view my complete system specs]

    Avid reseller ACSR at Telmaco

    http://www.telmaco.gr/en/

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