Is LSI hiding something about their cards? Warning to potential users/buyers

Discussion in 'SSDs & Data Storage' started by rmd3003, Oct 21, 2012.

  1. rmd3003

    rmd3003 Limp Gawd

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    Well, my 9260 card can't spin drives down with any new firmware. I have to use 2 year old firmware in order to have spin down (so called "dimmer") option. Recently I decided that it might be a good idea to upgrade firmware on my server (LSI 9260-4i card). Update went smoothly, I rebooted and everything is great. To my shock 24 hours later I see that none of my drives are sleeping. I checked power options and see that only hot spare and drives that are not allocated can be span down. Option for active drives is gone.

    This is what I found on LSI site:

    16590, What are the types of MegaRAID Dimmer Switch power savings settings, and should I use any of them?
    There are three settings for LSI MegaRAID Dimmer Switch power savings:

    From the User Guide:
    Dimmer Switch I (DS1) - Spin down unconfigured disks. This feature is configurable and can be disabled.
    Dimmer Switch II (DS2) - Spin down Hot Spares. This feature is configurable and can be disabled.
    Dimmer Switch III (DS3) - This new feature spins down any Logical Disk after 30 minutes of inactivity, by default, if the array can be spun up within 60 seconds.
    This feature is configurable and can be disabled.


    DS1 and DS2 are okay to use. DS3 should not be used, and has been disabled on newer versions of LSI MegaRAID 9260/9280 RAID controllers.

    In some cases, when Dimmer Switch with DS3 spins down the volume, the volume cannot spin up in time when I/O access is requested by the operating system. This can cause the volume to go offline, requiring a reboot to access the volume again.


    I think that it's ridiculous that such a great option to save power is completely disabled.
    My guess there is an issue with controllers and they decided to disble that option completely.
    I wish I knew that they can screw cutomers in such a way.
     
  2. klank

    klank Killer of Killer NIC Threadz

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    So what is wrong with using the 2 year old firmware? Does the new one have a bug fix that you "need"?
     
  3. mwroobel

    mwroobel [H]ardness Supreme

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    They probably found some instances where particular drives or implementations (large numbers of drives in an array and lengthy staggered spin-ups) did not spin up in the requisite time before the OS had an issue, so they just disabled it globally so no one would have the problem. If you have a complaint call LSI. They will tell you if the feature is important, use the older firmware. Trust me, this is not them screwing a customer, I can give you great examples of when a company tries doing that :D
     
  4. jmilcher

    jmilcher 2[H]4U

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    Exactly my thoughts. I think they wanted to avoid the issue being widespread. LSI isn't in the business of screwing customers from my experience.
     
  5. rmd3003

    rmd3003 Limp Gawd

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    Well, maybe "screwing customer" was a little too much. I'm still upset that it's completely disabled. Are any other manufacturers have spin down missing from their cards?
     
  6. Jeroen1000

    Jeroen1000 Limp Gawd

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    Interesting. Thanks for posting this. For prosumers, this is an important feature that is now lost. Good thing I opted for an Areca:D
     
  7. 1010

    1010 Limp Gawd

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    It's story time! :p
     
  8. Aesma

    Aesma [H]ard|Gawd

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    Contact them, they may have the latest firmware with this feature available.
     
  9. klank

    klank Killer of Killer NIC Threadz

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    How is this important feature lost? It still exists in an older firmware.

    If it works don't try to fix something that isn't broke...
     
  10. ptr727

    ptr727 n00bie

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    I just found out about this issue after upgrading my 9280 card to a new 9271, and drives no longer spin down :(