VMware vSphere

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  • 1.  VMware Datastore Fail Case - Real Time Mirroring ?

    Posted Apr 13, 2018 10:58 AM

    We have following configuration in our Virtual Enviroment:

    PRODUCTION SITE (2 x ESXi Hosts connected with FC to HP-MSA-2040#1 where is Datastore for our 15 Server VMs).

    RECOVERY SITE (1 x ESXi Host connected with FC to HP-MSA-2040#2 where is Datastore for Replicated VMs from Production site made by Acronis VMware).

    In Acronis, we have replication interval for all VMs (15 Server VMs) every 20 min.

    In a case of a problem with ESXi host, we can vMotion VMs between 2 ESXi host in Production site, without any downtime and dataloss.

    In a case of a problem with HP-MSA-2040#1 where are our VMs stored, we are using replicas from Recovery Site - but then we have downtime, and also dataloss (because of 20min replication interval).

    Is there a way / possibility to have "Live" or "Real Time" mirroring for Datastore between our two HP MSA 2040 devices, which will be integrated in vSphere in order to avoid downtime and dataloss? So, if HP-MSA-2040#1 SAN fails that HP-MSA-2040#2 will take over everything?

    Thank you very much.



  • 2.  RE: VMware Datastore Fail Case - Real Time Mirroring ?

    Posted Apr 13, 2018 02:09 PM

    As far as I know:

    MSA 2040 supports aync mirror (remote snap feature; requires license).

    You could add a storage cirtualization component like Datacore or DellEMC VPLEX which would perform the synchronous mirror (no idea whether VPLEX supports MSA) but this adds another level of complexity and potential problems like latency (depending on distance), split brain handling etc.



  • 3.  RE: VMware Datastore Fail Case - Real Time Mirroring ?

    Posted Apr 13, 2018 02:17 PM

    I have also checked if there is something from HP MSA side, but this is also not integrated in VMware...

    I was thinking for some solution from VMware or Acronis, but I think that there is nothing that is not too complicated / too expensive.



  • 4.  RE: VMware Datastore Fail Case - Real Time Mirroring ?

    Posted Apr 13, 2018 02:22 PM

    VMware have vSphere Replication but its async and the smallest RPO depending on configuration is 5 or 15 minutes.



  • 5.  RE: VMware Datastore Fail Case - Real Time Mirroring ?

    Posted Apr 13, 2018 02:25 PM

    I know that... It is also a good solution, but we have already Acronis fo VMware, and with this solution I have a little bit more settings that I can configure (Failback).