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Status Future consideration
Workspace IBM i
Categories Storage
Created by Guest
Created on Jul 2, 2020

IBM i MULTIPATH SAN BEHAVIOR

Hello,
Following the opening of an IBM i OS incident, we were told that we could not specify at the IBM i level the switching behavior between the different SAN paths. If on a loss of SAN path the automatic switch to another SAN path suits us, we do not want the reuse of the initial path to be done automatically as soon as it is seen as operational again. Indeed, SAN rods mean that with an automatic rollback on the SAN path we suffer from freeze of the IBM i appearance.
Is it possible to have the possibility to choose the multipath behavior during a failure, in particular not to make an automatic return on the SAN path which was in error.
To make it simple we would like to have the possibility of having the VMWARE equivalent of "VMW_PSP_MRU - Most Recently Used"


Use Case:

Avoid partition freeze when banding on a SAN path.


Idea priority Urgent
  • Guest
    Mar 12, 2021

    Moving into consideration for a future relase.

  • Guest
    Sep 8, 2020

    The CAAC has reviewed this requirement and recommends that IBM view this as a high priority requirement that is important to be addressed. This is important for IBM to address to remain competitive with SAN solutions.

    Background: The COMMON Americas Advisory Council (CAAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CAAC has a key role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community, and has therefore reviewed your RFE.

    For more information about CAAC, see www.common.org/caac

    For more details about CAAC's role with RFEs, see http://www.ibmsystemsmag.com/Blogs/i-Can/May-2017/COMMON-Americas-Advisory-Council-%28CAAC%29-and-RFEs/

    Nancy Uthke-Schmucki - CAAC Program Manager

  • Guest
    Sep 2, 2020

    IBM has modified some of the information in this request. Please contact us if you have any questions.

    In particular, the headline has now been translated to English.

  • Guest
    Jul 20, 2020

    The CEAC has reviewed this requirement and recommends that IBM view this as a HIGH priority requirement that is important to address.

    As more customers adopt external storage the ability to manage multiple path to disk becomes more important.

    Background: The COMMON Europe Advisory Council (CEAC) members have a broad range of experience in working with small and medium-sized IBM i customers. CEAC has a crucial role in working with IBM i development to help assess the value and impact of individual RFEs on the broader IBM i community and has therefore reviewed your RFE.

    To find out how CEAC help to shape the future of IBM i, see CEAC @ ibm.biz/BdYSYj and the article "The Five Hottest IBM i RFEs Of The Quarter" at ibm.biz/BdYSZT

    Therese Eaton – CEAC Program Manager, IBM

  • Guest
    Jul 8, 2020

    This requirement is being evaluated.

  • Guest
    Jul 7, 2020

    IBM has modified some of the information in this request. Please contact us if you have any questions.

    In particular, since RFEs must be in English so members of the community can read and vote on them, machine translation was used to translate original text to English.

    Original headline:
    IBM i COMPORTEMENT MULTIPATH SAN

    Original Description:
    Bonjour,
    Suite à ouverture d'un incident OS IBM i l'on nous a indiqué que l'on ne pouvait pas préciser au niveau IBM i le comportement de bascule entre les différents chemins SAN. Si sur une perte de chemin SAN la bascule automatique sur un autre chemin SAN nous convient, nous ne souhaitons pas que la réutilisation du chemin initial se fasse automatiquement dès que celui-ci est vu comme de nouveau opérationnel. En effet, des bagots SAN font qu'avec un automatic rollback sur le chemin SAN nous souffrons de freeze de la parition IBM i.
    Est-il possible d'avoir la possibilité de choisir le comportement multipath lors d'une panne, notamment ne pas faire de retour automatique sur le chemin SAN qui était en erreur.
    Pour faire simple nous souhaiterions avoir la possibilité d'avoir l'équivalent VMWARE du "VMW_PSP_MRU - Most Recently Used "

    Original Use Case:
    Eviter les freeze de partitions lors de bagots sur un chemin SAN.