Client node tuning recommendations

IBM Spectrum® Scale node configuration is optimized for running IBM Spectrum Scale RAID functions.

ESS cluster node configuration is optimized for running IBM Spectrum Scale RAID functions. Protocols, other gateways, or any other non-ESS services must not be run on ESS management server nodes or I/O server nodes. In a cluster with high IO load, avoid using ESS nodes as cluster manager or filesystem manager. For optimal performance the NSD client nodes accessing ESS nodes should be properly configured. ESS ships with gssClientConfig.sh script located in /usr/lpp/mmfs/samples/gss/ directory. This script can be used to configure the client as follows:

/usr/lpp/mmfs/samples/gss/gssClientConfig.sh <Comma Separated list of 
client nodes or nodeclass>

You can run the following to see configuration parameter settings without setting them:

/usr/lpp/mmfs/samples/gss/gssClientConfig.sh -D

After running this script, restart GPFS on the affected nodes for the optimized configuration settings to take effect.

Important: Do not run gssClientConfig.sh unless you fully understand the impact of each setting on the customer environment. Make use of the -D option to decide if all or some of the settings might be applied. Then, individually update each client node settings as required.