Some years ago I installed ESXi 5.5 on Fujitsu Primergy RX300 S8 (it is now 5.5 update 3b).
It has 2x600GB Raid1 + 2x900GB Raid1.
At the time I created the two RAIDs as individual volumes both as VMFS 5.60 (see attached part1 and part2).
I am now running out of disk space so I need to add more drives, so I have a couple of questions I hope you can help with.
First: Only recently, I noticed on vSphere that there is the possibility to expand the volume over several disks. So, can I just add a new set of Raid1 disks and expand e.g. the 2x900GB volume so it is still seen as one volume?
Second: If yes, can I merge the existing two volumes together so they get to be one volume, easily? Of course I/we have different virtual machines on both volumes. They can be shut down and are not required to run 24/7.
Fantomet,
Are you using the same rpm disk and same type of disk?
If yes,you are good to go with datastore expansion.But again if it purely based on your environment requirement.I usually prefer to create a new datatstore unless the datastore space is critical.
If no,better create a new datastore and load balance your IOPS,disk queuing and lot more factore.
Refer KB for more information:
Extending a VMFS volume to use new LUN space after expansion (1752) | VMware KB
