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November 15th, 2016 18:00
Recoverpoint for VM
I have some VM running with RDM devices. Will the Recoverpoint for VM able to replicate those RDM devices over to the new storage? My objective is to migrate the VM from 3rd party storage to EMC storage.
It is very straight forward for Datastore and VM with only VMDK. I cannot do vMotion for VM with RDM since vMotion will only migrate the pointer not the content of the RDM devices.
We are exploring Recoverpoint for VM now. However, I will think the issue will remain the same with recoverpoint for VM to migrate RDM devices.
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forshr
2 Intern
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1.1K Posts
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November 16th, 2016 01:00
RP4VMs replicates VMDK or RDM devices, it is not vMotion. If the target is an RDM device you will need to ensure that it is already created and has the same SCSI ID as the source RDM Device.
Regards,
Rich
udaykr
4 Posts
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November 30th, 2016 07:00
making the RDM disk working is a major challenge. Its not so easy until the storage block on both sides (production & DR site) match..
Also, you mentioned there are different storage vendors, you need to make sure the number of blocks match in both location. for ex. If you have a hp storage and you create a 100GB LUN, that will have different number of blocks. Similarly in the DR site, if you create a 100GB disk on VNX storage, due to block difference at production/DR storage it doesn't work. You have to work with storage vendor and understand how their disk creation process works and how many blocks/KB it creates in a 100GB disk..
However if you are planning to replicate RDM disk from production site to DR site as vmdk disk (i.e DR VM will have vmdk disk with same data, as was in RDM), then it works. However this needs a rework, if you are briningup the VM. This is not a 100% DR solution for RDM based VMs.
Idan
675 Posts
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December 4th, 2016 00:00
To clarify, exact capacity b/w production and replica is always needed, if RP4VMs automatically creates the replica VM, he would automatically do this matching. If using an existing replica VM then the VMDK/RDM sizes would need to be set to the exact size, matching the size between different arrays is doable.
>> This is not a 100% DR solution for RDM based VMs.
I'm not sure what you're saying that as RP4VMs is a comprehensive solution for VMDK/RDM based vSphere VMs.
Please contact me offline if you need to further discuss.
Regards,
Idan Kentor
RecoverPoint Corporate Systems Engineering
idan.kentor@emc.com
@IdanKentor
udaykr
4 Posts
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December 13th, 2016 00:00
Hi Rdm disk was not a shared disk
Regards,
Uday