As we know in real IT world we need the speed and performance while accessing application and files . And in world of virtual environment of servers we need this more, but there are some flaws come in to the picture while implementing 2003 server in virtual environment Here we will discuss about the misaligned disk of VM servers and how to correct it…
What is VM Misaligned Disk.
When looking at performance problems traditionally storage is usually the first place many of us would look and for a good reason. In many of the environments these storage problems are caused by misaligned file systems. Why is that? Well fairly simple, misalignment causes overhead. Just look at this diagram:
How to correct VM Misalignment.
down the VM with misaligned disks.
Rename the server to <server name-old>
vCenter Converter Standalone Client ver.5 with Run As administrator
source type: VMware Infrastructure virtual machine
server connection information to vCenter server
with misaligned disks
type: VMware Infrastructure virtual machine
VMware Infrastructure server details for vCenter
destination host and datastore.
NB! The datastore can not be the same as source
type: Select volumes to copy and click Advanced ->Destination Layout
Thin provisioning for all disks
Ignore page file and hibemation file
Select Create optimized partition layout
Click Finished to start
job completed log into vCenter and verify
that the new aligned VM is using the same network adapter and connected to the
same network label as the original misaligned VM. If not, this has to be
corrected before you can power on the new aligned VM.
new aligned VM and verify that all disk are aligned
command prompt run: wmic partition get Index, Name, StartingOffset
disk will have StartingOffset 32256
disk will have StartingOffset 32768 , 1048576 or amy other StartingOffset
dividable with 4096
original misaligned VM named <server name-old>.