Virtual machines are not starting due to memory issue

[Mahesh Babbar]

Hi All,
I have a Bl870C with 8 cpu cores and 64GB memory.I have installed IVM 3.5 and created two VM guests each with 2 cores and 28GB memory.
Now i am facing the problem in starting the VM guests with the error "There is insufficient free host memory for this guest".

How much memory should be reserved for VM host?
Will it take 8GB memory for its operation.

How can we reduce the VM host memory consumption?

[Jozef_Novak]

Hello,

check out the HPVM 3.5 installation guide at:

http://docs.hp.com/en/T2767-90105/T2767-90105.pdf

Examine the memory requirements. The VM host needs 750 MB + 7.5% of total physical memory - 1GB. This gives 5.475 GB in your case.

Guest management requires between 7-7,3 % of aggregate guest memory for guests larger than 4GB. This gives 4.088 GB in your case.

So in total you require 9.563 GB of memory for your VM host and your configuration leaves only 8. That's why your guests are not starting.

J.

[inukoti]

Hi ,
Please check the swap in host machine.
hpvmmodify you can change the or reduce the memory.

Could you please post the complete error for better understanding ?

bobby

[Suraj K Sankari]

Hi,
See the below
Sufficient physical memory (RAM), including the following:
â ¢ 750 MB + 7.5% of memory beyond the first GB (that is, 7.5% of (total physical memory
- 1 GB))
â ¢ Total aggregate memory required for each guest (operating system and application
requirements)
HP-UX 11i v2 May 2005 requires a minimum of 1 GB of memory, so a guest running
HP-UX must be configured with at least that much memory.
â ¢ Additional 7% of aggregate guest memory for overhead for guests less than or equal
to 4 GB and between 7% and 7.3% for guests larger than 4 GB.
For example, for a VM Host with 16 GB of memory and two VMs configured with 3 GB
of memory each, the memory requirements would be calculated as follows:
â ¢ 1.86 GB for the VM Host (750 MB plus 7.5% of 15 GB)
â ¢ 6.42 GB total guest requirement (107% of 6 GB)
â ¢ Total requirements = 8.28 GB of memory
This leaves 7.72 GB of memory for additional guests.

Suraj