[OpenAFS] calculating memory

[Gary Gatling]

Hi Guys. Thanks for all the good suggestions so far.

Just to clarify a couple of points if it matters.

I am going to use RHEL 6 for the fileserver. I have a test VM up and 
working with openafs 1.4.14 to start with. Seems to work ok with ext4. The 
version of VMware we are using is VMware ESX. We pay full price for that. 
I think we are slowly moving to version 4 but now I think now its mostly 
3. (We can use vmxnet 2 NIC but not 3 on most boxes so far)

It seems like on Solaris 10 with openafs 1.4.11 the server seems to use 
about 1 GB when its not backing up. I am not sure how much it uses at 
"peak times" or when doing full backups. And I don't have the new backup 
software (yet). Teradactyl is the backup software we are switching to to 
ditch Solaris for Linux.

I gather real servers aren't an option `cause management really likes 
moving most everything into VMware. We already moved all our license and 
web servers into VMware and we have some other weird servers working in it 
also. Even Windows infrastucture like domain controllers and stuff. If 
everyone says its a bad idea I can make an argument though. :)

The /vicepX patitions lives on a SAN in both systems.

Thanks again!

Gary Gatling      | ITECS Systems
ITECS, BOX 7901   | Operations and Systems Analyst
NCSU, Raleigh, NC | Email: gsgatlin@ncsu.edu
27695-7901        | Phone: (919) 513-4572 (5C Page Hall)

On Fri, 28 Jan 2011, Gary Gatling wrote:

>
>
> Hello,
>
> I am in charge of several afs servers in our college. Right now there are 5 
> afs servers running on 5 SPARC based servers. We are ditching Solaris since 
> it sucks so bad and are going to move to Linux VM's running inside of VMware.
>
> I was asked how much disk and memory we would need for the VMs. I was then 
> critized for suggesting that each VM needs 4GB just like the real servers. I 
> did not suggest the 4GB in each server. That was decided by a guy who quit a 
> few years ago.
>
> So....
>
> Is there some rule of thumb for how one calculates the amout of RAM a AFS 
> file server should have. The 5 servers serve out about 2 TB of data. So each 
> fileserver has like about 500 GB of afs volumes on. Also how to go about 
> calculating will be good when the justifications for RAM are asked?
>
> Thanks for any ideas anyone will have.
>
> Gary Gatling      | ITECS Systems
> ITECS, BOX 7901   | Operations and Systems Analyst
> NCSU, Raleigh, NC | Email: gsgatlin@ncsu.edu
> 27695-7901        | Phone: (919) 513-4572 (5C Page Hall)
> _______________________________________________
> OpenAFS-info mailing list
> OpenAFS-info@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-info
>