how may NFS directories can be mounted on a client

[Gary Yu]

Hi all,

Is there any limitation on how may nfs is allowed to be mounted on a nfs client? we have a web server hosting may sites, more and more nfs directories need to be added which made me a little concerned.

any potential problem with lots of nfs mounted?

thanks,
Gary

[LucianoCarvalho]

There is no limit besides network and cpu resorces.

regards

[Gary Yu]

thanks guys for the reply!

Massimo, thank you for the reminder of number of daemons, I guess as a client mount from multiple servers, I only need to increase NUM_NFSIOD.

Zeek, thank you for the document.

Gary

[LucianoCarvalho]

There is no limit besides network and cpu resorces.

regards

[Paul Sperry]

I don't believe there is a limit

[Massimo Bianchi · Accepted solution]

Hi,
if you plan to have a high number of nfs mount, you shuold change the following parameter in
/etc/rc.config.d/nfsconf

NUM_NFSD=16
NUM_NFSIOD=16

May be up to 32 or more.

As far as i know, the maximum is 64.

HTH,
Massimo

[Zeev Schultz]

What version of HP-UX you're using?
See this excellent whitepaper by Dave Olker:
http://www.docs.hp.com/hpux/onlinedocs/1435/NFSPerformanceTuninginHP-UX11.0and11iSystems.pdf
Basically nfs performance depends much on
underlying filesystem/disk interface performance as well.

Zeev