Hi, Thank you very much, actually I have the following scenario for hypervisor. HDD: 500 GB RAM: 32GB CPU 8 Core @2.9GHz
and each guest vm is HDD: 50GB RAM: +/- 4 GB CPU 1 Core +/-@ 2.0 GHz Maximum 8 guest VM in my server two eth each gigabit I want to run some mysql and membase service which have huge disk I/O So is the server configuration is OK or do i need SAS HDD or something else? Thanks Jewel --- On Mon, 7/9/12, sebastien goasguen <[email protected]> wrote: From: sebastien goasguen <[email protected]> Subject: Re: About server hardware To: [email protected] Cc: "[email protected]" <[email protected]> Date: Monday, July 9, 2012, 10:12 PM Hi Jewel, I agree with Abhi, you would need to describe your use case in more details. Specifying the amount of resources needed for each VM and the hypervisor used. If you cannot overcommit memory and want 1GB per VM, then you need at least 8 GB RAM plus extra for hypervisor/host kernel. If you *can* over commit then you may choose to use less RAM on the host (<8GB ofr 1GB guests). Same thing with the number of cores, you could have only 4 or 6 cores but run 8 VMs. This is really a guest VM performance issue, as well as workload profile. Hypervisor experts should be able to help with different scenarios and identify a rule of thumb. -Sebastien On Mon, Jul 9, 2012 at 8:48 AM, Abhinandan Prateek <[email protected]> wrote: > Hi Jewel, > If you list down the requirements for the guest VM in terms of CPU, RAM >and storage adding that to Xenserver overhead you can get the requirements for >the hardware you need. > For Xenserver overhead, simple rule of thumb is to allow 512 MB for the > XenServer total (Hypervisor plus the control domain) if there is less than 5 > GB of memory in the server, and allow 1 GB of memory if there> Also you > need to decide if you want HA, in that case you will need some redundant > hardware. > -abhi > >>-----Original Message----- >>From: Jewel Nuruddin [mailto:[email protected]] >>Sent: Monday, July 09, 2012 4:27 PM >>To: [email protected]; cloudstack- >>[email protected] >>Cc: [email protected] >>Subject: About server hardware >> >>Hi All, >> >>Need one comments about server hardware. >>In one hypervisor I want to run 8 guest vm, what will be the main hardware I >>have to take care properly! >>can any one have any thought? >> >>Thanks >>Jewel -- --- Sebastien Goasguen Open Source Cloud Evangelist, Cloudstack http://sites.google.com/site/runseb/
