New answers tagged

2

VMDKs are performing very good and I haven’t seen almost any difference between VMDK and RDM. Of course, you have to pay attention to the type of provisioning since Eager Zero vs Lazy Zero VMDKs performance differs a lot https://communities.vmware.com/thread/436685?start=0 If you need some virtualized storage shared or mirrored between hosts you can use an ...


0

RDM lets the storage array do things like do array level snapshots of volumes. Maybe only useful for large databases, but it is still in use. Its a question of functionality, whether you use more storage features at the virtualization level or the array level.


4

There's no much point in using RDM these days unless your VM is sort of a "controller" VM and it uses ZFS or similar to aggregate multiple individual physical disks into single unified namespace. Think about Nutanix for example. For all other cases VMDK is just as well I/O performing as RDM but RDM-x doesn't support at least some nice features and has issues ...


0

What I read and what I understand suggest to me that in either case you're likely to end up with corruption unless you're using a cluster-aware file system such as CSVFS. I'm not a Synology user, but I do work with iSCSI and Failover Clusters. I would say that in your case, allowing multiple sessions will be the most appropriate option. Adding a new target ...



Top 50 recent answers are included