Avatar of mfg1
mfg1
Flag for United Kingdom of Great Britain and Northern Ireland asked on

VMware ESXi 5.5 VDDK delta generation

Hi,

I am using a backup solution which protects the VM at hypervisor level (I am using ESXi 5.5). It relies on creating a delta file of the VMDK's attahced to the VM. The schedule is weekly and I am concerned the vmdk delta file seems quite large. I have a VM with Windows Server 2012R2 used as a terminal server, it only has 1 vmdk attached. The delta file created between weekly backups is nearly 30GB! This seems huge for a terminal server with no real data on it. The vmdk total size is 100GB.

1. does this seem normal?

2. is there any way of reducing this delta size? (data deplucation in Server 2012?)

3. is the delta generation a limititation of ESXi? (compared to ESX?)

4. does it rely on the virtual hardware specs of the VM as well? i.e. if it has 16GB RAM assigned, I think this affects the swap size? does it also affect the delta?


I hope that all makes sense.

Thanks for your responses
VMwareHardwareVirtualization

Avatar of undefined
Last Comment
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
All of life is about relationships, and EE has made a viirtual community a real community. It lifts everyone's boat
William Peck