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Hyper-V server 2003, no more than 16 cores.
Dear Experts,
I have a server 2003 box which i wish to turn into a hyper-v guest. I did hdd to vhd, everything went fine, but when I add more than 16 Core's to the hyper-v box, it gets stuck on bootup.
It hangs exactly on acpitabl.dat.
I read that there is no core limitation for server 2003 x64 enterprise r2.
What can i do to bring the box up with more than 16 cores?
I have a server 2003 box which i wish to turn into a hyper-v guest. I did hdd to vhd, everything went fine, but when I add more than 16 Core's to the hyper-v box, it gets stuck on bootup.
It hangs exactly on acpitabl.dat.
I read that there is no core limitation for server 2003 x64 enterprise r2.
What can i do to bring the box up with more than 16 cores?
ASKER
I can boot with 16 cores. I am not getting the processing power I need under this scenario
Which version of hyper-v you are running ?
Hyper-V 2012 \ 2012 R2 ?
Mahesh
Hyper-V 2012 \ 2012 R2 ?
Mahesh
ASKER
Hyper-V Version 6.2.9200.16384
MS support only TWO virtual CPU per Windows 2003 in Hyper-V 2012 \ 2012 R2 hosts
http://technet.microsoft.com/library/hh831531.aspx
Give a try for 8 Virtual CPU and check, might help
Mahesh
http://technet.microsoft.com/library/hh831531.aspx
Give a try for 8 Virtual CPU and check, might help
Mahesh
ASKER
I have it running with 16 Virtual CPU and it boots up.
I can see the 16 CPU's in the taskmgr.
The minute I go above 16 (even to 17) I get a bootloop stuck on acpitabl.dat
Right now i need this host to use 80% of total System resources, it is only using 16.
Is there a way around having it use more of the physical system resources ?
I can see the 16 CPU's in the taskmgr.
The minute I go above 16 (even to 17) I get a bootloop stuck on acpitabl.dat
Right now i need this host to use 80% of total System resources, it is only using 16.
Is there a way around having it use more of the physical system resources ?
Is there any specific reason to have 16 or 16+ CPU, if I can ask if you don't mind please
You will not get MS support unless you don't have supported config
Already 2003 is running in Extended support and you might face problems getting support if tomorrow happens some thing bad even if you managed to run 2003 VM with 16+ CPUs
Instead you can run 2008 R2 Enterprise if your application supports that
Mahesh
You will not get MS support unless you don't have supported config
Already 2003 is running in Extended support and you might face problems getting support if tomorrow happens some thing bad even if you managed to run 2003 VM with 16+ CPUs
Instead you can run 2008 R2 Enterprise if your application supports that
Mahesh
ASKER
our ERP runs on 2k3, we havnt upgraded the backend to version 12 in order to upgrade to server 2008.
reason for 16+ CPU's, I am trying to get the most processing power as possible. I am going from a standalone box that is 7 year olds to a HP DL380 G8 with full SSD.
when i bench march, i get better scores on the old production box vs the new testing box.
in all areas except IOPS.
reason for 16+ CPU's, I am trying to get the most processing power as possible. I am going from a standalone box that is 7 year olds to a HP DL380 G8 with full SSD.
when i bench march, i get better scores on the old production box vs the new testing box.
in all areas except IOPS.
OK
Thanks for sharing info.
How many cpu cores do you have on physical server ?
Mahesh
Thanks for sharing info.
How many cpu cores do you have on physical server ?
Mahesh
ASKER
the old physical server has 4 E7340, 4 physical CPU's with 4 cores each for a total of 16 cores. (This is the box that is still in production)
The new Server that we are migrating to has 2 e5-2690 with 8 cores each for a total of 16 cores / 32 logical cores. Host OS is Server 2012, with the guest OS being an exact replica of the old production box.
The new Server that we are migrating to has 2 e5-2690 with 8 cores each for a total of 16 cores / 32 logical cores. Host OS is Server 2012, with the guest OS being an exact replica of the old production box.
ASKER CERTIFIED SOLUTION
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ASKER
2003 on hyper-v will not work with more than 16 cores.
By default Windows server 2003 R2 Enterprise edition supports total \ maximum 8 single core physical Processors (8 cores now we can say in modern days)
You may install one quad core cpu having 8 logical cores or you can install 2quad core cpu with 4 logical cores each.
http://technet.microsoft.com/en-us/windowsserver/bb430827.aspx
Just limit your cores to 8 and check if its able to boot
Mahesh