Hi All,
I am looking for some advice on how I can resize vmdk files. Long story short, I'm pretty new to VMWare and one of my clients has an IBM DS 3400 SAN that has 2 LUNs, each approx 400Gb in size. One LUN only has about 5Gb of space left, and I need to reclaim some of that so vRanger backups will work, because vRanger won't work with less than 6Gb free space on a LUN. How can I shrink the vmdk files to achieve this? The VM's are production servers, so I can't rebuild them. As I understand it, vmdk files represent the hard disks in a VM. There is plenty of space in the OS hard disks, so I would like to make the vmdk files considerably smaller.
I noticed that, from within Virtual Centre, I have the options to copy/cut/paste files from within datastores - can I use this to my advantage? I haven't touched anything yet, because I am very wary about making changes when I can't backup the VMs beforehand because the LUN is full!!! 
Any help would be greatly appreciated.
Cheers,
James