Unsolved
This post is more than 5 years old
92 Posts
0
1234
Paper with Storage DRS & FAST, Snaps, etc
Guys,
Found this very interesting paper from VMware relating Storage DRS compatibility with most storage functionalities: http://www.vmware.com/files/pdf/techpaper/vsphere-storage-drs-interoperability.pdf
Regards,
Rafa
Jingyi1
199 Posts
0
June 10th, 2012 19:00
Thanks, Good document. One question, does Storage DRS support RDM currently?
reseach
225 Posts
0
June 10th, 2012 19:00
Quick search the guide provided by Rafa.
VMware supports vSphere Raw Disk Mapping in Storage DRS.
This statement is on page 8/11.
VMware vSphere Raw Disk Mapping
vSphere 5.0 fully supports the use of Raw Disk Mapping (RDM) in combination with Storage DRS. The target LUN that is dedicated to an RDM disk will not be managed by Storage DRS, but it will manage the pointer mapping file for an RDM disk. Pointer files are managed in the same way as the other disk files of a virtual machine. Storage DRS is able to place a virtual machine with an RDM pointer mapping file, as well as relocating the virtual machine. Cloning virtual machines and adding disks with pointer files are also supported by Storage DRS. If a datastore is placed into maintenance mode, Storage DRS will migrate the pointer file to another datastore in the datastore cluster. If the virtual machine is configured with a VMDK anti-affinity rule, it will be unlikely for Storage DRS to move the RDM pointer file for space balancing because the pointer file is very small.
In addition, I/O load balancing is effectively disabled for RDM because the pointer files themselves are not involved in I/O, and the I/O to the target LUNs cannot be redirected by Storage DRS.
RafaelNovo
92 Posts
0
June 11th, 2012 17:00
So, just to make sure this is clear - as the text can be a little tricky: SDRS is supported with VMs that has RDMs and will move RDM pointers, but will NOT move the RDM LUN itself.
Anonymous
5 Practitioner
5 Practitioner
•
274.2K Posts
0
June 11th, 2012 22:00
reseach
225 Posts
0
June 11th, 2012 23:00
As I know, Storage DRS is not supported with SRM
zhaos2
643 Posts
0
June 11th, 2012 23:00
Please refer to the documented in the SRM releasenotes: http://www.vmware.com/support/srm/srm_releasenotes_5_0_0.html