Topic
  • 12 replies
  • Latest Post - ‏2015-05-11T14:55:17Z by Eka
Mangesh Shirke
Mangesh Shirke
43 Posts

Pinned topic V7000: Firmware Downgrade.

‏2014-03-19T20:53:40Z |

Hi All,

Many times customer asks that can we downgrade storage firmware if it required. It may be due to some application dependacies or unexpected issues. Do we have option available to downgrade firmware in V7000 storage...??? If yes is it online activity or do we need downtime...???

Also please help me with procedure for the same.

Thanks.

Mangesh Shirke

  • chriscanto
    chriscanto
    283 Posts
    ACCEPTED ANSWER

    Re: V7000: Firmware Downgrade.

    ‏2014-03-19T21:27:05Z  

    The software upgrade matrix for Storwize V7000 is available here:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705

    Section 4 illustrates the supported concurrent upgrade/downgrade paths:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705&aid=188

     

    You'll see that downgrade is not supported.   However, it is possible to reinstall the software onto the node canisters to install a downlevel version, provided the code level is supported on that node hardware (e.g. model 300 canisters require a minimum code level of 6.2):

    http://www-01.ibm.com/support/docview.wss?uid=ssg1S1003850

     

    Reinstalling the software on a node is a destructive procedure; the system is deleted, the code is reinstalled, then a new system is created, just as it would be for a new system.   Any previous data on the system is lost.

    I've never seen any requirements to downgrade the software level -- the support strategy is always to resolve the problem by moving forwards rather than backwards.

  • chriscanto
    chriscanto
    283 Posts

    Re: V7000: Firmware Downgrade.

    ‏2014-03-19T21:27:05Z  

    The software upgrade matrix for Storwize V7000 is available here:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705

    Section 4 illustrates the supported concurrent upgrade/downgrade paths:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705&aid=188

     

    You'll see that downgrade is not supported.   However, it is possible to reinstall the software onto the node canisters to install a downlevel version, provided the code level is supported on that node hardware (e.g. model 300 canisters require a minimum code level of 6.2):

    http://www-01.ibm.com/support/docview.wss?uid=ssg1S1003850

     

    Reinstalling the software on a node is a destructive procedure; the system is deleted, the code is reinstalled, then a new system is created, just as it would be for a new system.   Any previous data on the system is lost.

    I've never seen any requirements to downgrade the software level -- the support strategy is always to resolve the problem by moving forwards rather than backwards.

  • Mangesh Shirke
    Mangesh Shirke
    43 Posts

    Re: V7000: Firmware Downgrade.

    ‏2014-03-20T05:10:19Z  

    The software upgrade matrix for Storwize V7000 is available here:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705

    Section 4 illustrates the supported concurrent upgrade/downgrade paths:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705&aid=188

     

    You'll see that downgrade is not supported.   However, it is possible to reinstall the software onto the node canisters to install a downlevel version, provided the code level is supported on that node hardware (e.g. model 300 canisters require a minimum code level of 6.2):

    http://www-01.ibm.com/support/docview.wss?uid=ssg1S1003850

     

    Reinstalling the software on a node is a destructive procedure; the system is deleted, the code is reinstalled, then a new system is created, just as it would be for a new system.   Any previous data on the system is lost.

    I've never seen any requirements to downgrade the software level -- the support strategy is always to resolve the problem by moving forwards rather than backwards.

    Hi,

    Is it possible to restore configuration backup after reinstalling software...??? Or can we do T3 recovery to get data back...??? If yes how to do it...???

    Thanks.

    Mangesh Shirke

  • chriscanto
    chriscanto
    283 Posts

    Re: V7000: Firmware Downgrade.

    ‏2014-03-20T11:42:02Z  

    Hi,

    Is it possible to restore configuration backup after reinstalling software...??? Or can we do T3 recovery to get data back...??? If yes how to do it...???

    Thanks.

    Mangesh Shirke

    A configuration backup XML is only compatible for code levels within the same codestream (i.e. V.R.M).

    So you could use that to do a configuration backup on 7.1.0.3, delete the cluster, install 7.1.0.1, then perform a configuration restore (T4).  This method does not keep any of the previous data on the system -- it is only the configuration that is restored, not the customer data.

    A T3 recovery is only possible on exactly the same code level that the metadata being used was written by.

     

  • Mangesh Shirke
    Mangesh Shirke
    43 Posts

    Re: V7000: Firmware Downgrade.

    ‏2014-03-20T13:47:33Z  

    A configuration backup XML is only compatible for code levels within the same codestream (i.e. V.R.M).

    So you could use that to do a configuration backup on 7.1.0.3, delete the cluster, install 7.1.0.1, then perform a configuration restore (T4).  This method does not keep any of the previous data on the system -- it is only the configuration that is restored, not the customer data.

    A T3 recovery is only possible on exactly the same code level that the metadata being used was written by.

     

    Can you please share T4 recovery procedure....???

  • chriscanto
    chriscanto
    283 Posts

    Re: V7000: Firmware Downgrade.

    ‏2014-03-20T15:44:30Z  

    Can you please share T4 recovery procedure....???

    The svcconfig backup/restore process (referred to internally within IBM as a Tier-4 recovery, aka "T4") is documented in the Information Center:

    http://pic.dhe.ibm.com/infocenter/storwize/ic/index.jsp?topic=%2Fcom.ibm.storwize.v7000.720.doc%2Fsvc_clusterconfmaintovr_1e4k2o.html

  • chriscanto
    chriscanto
    283 Posts

    Re: V7000: Firmware Downgrade.

    ‏2014-03-20T15:46:37Z  

    Can you please share T4 recovery procedure....???

    The svcconfig backup/restore process (referred to internally within IBM as a Tier-4 recovery, aka "T4") is documented in the Information Center:

    http://pic.dhe.ibm.com/infocenter/storwize/ic/index.jsp?topic=%2Fcom.ibm.storwize.v7000.720.doc%2Fsvc_clusterconfmaintovr_1e4k2o.html

  • Mangesh Shirke
    Mangesh Shirke
    43 Posts

    Re: V7000: Firmware Downgrade.

    ‏2014-03-20T18:37:35Z  

    The svcconfig backup/restore process (referred to internally within IBM as a Tier-4 recovery, aka "T4") is documented in the Information Center:

    http://pic.dhe.ibm.com/infocenter/storwize/ic/index.jsp?topic=%2Fcom.ibm.storwize.v7000.720.doc%2Fsvc_clusterconfmaintovr_1e4k2o.html

    Hi Chris, Thanks.

  • Eka
    Eka
    4 Posts

    Re: V7000: Firmware Downgrade.

    ‏2015-05-10T05:13:40Z  

    The software upgrade matrix for Storwize V7000 is available here:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705

    Section 4 illustrates the supported concurrent upgrade/downgrade paths:

    http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003705&aid=188

     

    You'll see that downgrade is not supported.   However, it is possible to reinstall the software onto the node canisters to install a downlevel version, provided the code level is supported on that node hardware (e.g. model 300 canisters require a minimum code level of 6.2):

    http://www-01.ibm.com/support/docview.wss?uid=ssg1S1003850

     

    Reinstalling the software on a node is a destructive procedure; the system is deleted, the code is reinstalled, then a new system is created, just as it would be for a new system.   Any previous data on the system is lost.

    I've never seen any requirements to downgrade the software level -- the support strategy is always to resolve the problem by moving forwards rather than backwards.

    Hi Chris, 

    We have Storewizer V7000 <property value="6.3.0.0 (build 54.6.1111250000)" name="code_level"/> we had a battery problem and couldn't log in to system. After recharge we have done recovery T3 but failed. Please can you give some advice? can we somehow get the data from the storage?

     

  • chriscanto
    chriscanto
    283 Posts

    Re: V7000: Firmware Downgrade.

    ‏2015-05-10T21:28:06Z  
    • Eka
    • ‏2015-05-10T05:13:40Z

    Hi Chris, 

    We have Storewizer V7000 <property value="6.3.0.0 (build 54.6.1111250000)" name="code_level"/> we had a battery problem and couldn't log in to system. After recharge we have done recovery T3 but failed. Please can you give some advice? can we somehow get the data from the storage?

     

    I would suggest you contact IBM Support, who will be able to assist with the T3 recover process and advise on a software upgrade.

  • Eka
    Eka
    4 Posts

    Re: V7000: Firmware Downgrade.

    ‏2015-05-11T00:50:35Z  

    I would suggest you contact IBM Support, who will be able to assist with the T3 recover process and advise on a software upgrade.

    Hi Chris, 

     

    Thank you for suggestion. Is it still possible to get old data from the storages back if the T3 recovery status is failure ?

  • chriscanto
    chriscanto
    283 Posts

    Re: V7000: Firmware Downgrade.

    ‏2015-05-11T07:50:43Z  
    • Eka
    • ‏2015-05-11T00:50:35Z

    Hi Chris, 

     

    Thank you for suggestion. Is it still possible to get old data from the storages back if the T3 recovery status is failure ?

    Sometimes, yes.  It depends on the reason for the failure, but in many cases it is possible to recover the system using a manual T3 process, even when the automated recovery process has stopped with a failure.

  • Eka
    Eka
    4 Posts

    Re: V7000: Firmware Downgrade.

    ‏2015-05-11T14:55:17Z  

    Sometimes, yes.  It depends on the reason for the failure, but in many cases it is possible to recover the system using a manual T3 process, even when the automated recovery process has stopped with a failure.

    Thank you Chris. we have contacted IBM support team and they did amazing job!