Virtual RDM: mapping in the vm, VMFS folder file size
Hello
I just migrated an iscsi LUN previously managed the MS iscsi initiator (running inside a machine virtual w2k03) to ESX iscsi sw, preserving the data.
I used RDM (raw device mapping) and I had to use 'virtual' because 'physical' hanged the VM at startup of the operating system.
The iscsi LUN is 1 TB, with about 60GB used.
I noticed that on the volume VMFS file mapping for the virtual machine is about 2 GB: happen when on the iscsi LUN more space will be used? And if it goes, is there a rule to calculate how much?
I'm worried I might risk running out of space on the VMFS volume because of the mapping of RDM file...
Thank you
Guido
It's just a pointer to the original disc of RDM. I have a few MS Cluster in my setup. For 18 GB RDM Lun he creates about 100 MB.
Thank you
Tags: VMware
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