<font size=2 face="sans-serif">Look at my example, again, closely. I
chose the blocksize as 16M and subblock size as 4K and the inodesize as
1K.... <br>Developer works is a good resource, but articles you read there may be
incomplete or contain mistakes.</font><br><br><font size=2 face="sans-serif">The official IBM Spectrum Scale cmd
and admin guide documents, are "trustworthy" but may not be perfect
in all respects. "Trust but Verify" and YMMV. ;-)<br><br>As for why/how to choose "good sizes", that depends what objectives
you want to achieve, and "optimal" may depend on what hardware
you are running.<br>Run your own trials and/or ask performance experts. There are usually
"tradeoffs" and OTOH when you get down to it, some choices may
not be all-that-important in actual deployment and usage. That's
why we have defaults values - try those first and leave the details and
tweaking aside until you have good reason ;-)</font><BR>