Thanks for explanation, by default we use 32 and 4 as default values as HP3PAR prescribe.
I'm gonna check the log out , but i don't think I've ever seen some lines like that.
Edit : I didn't found the required log, the nearest look like below :
2017-06-23T01:52:30.236Z cpu9:34176)Fil3: 15438: Max retries (10) exceeded for caller Fil3_FileIO (status 'IO was aborted by VMFS via a virt-reset on the device')
2017-06-23T01:52:30.236Z cpu9:34176)BC: 2288: Failed to write (uncached) object '.iormstats.sf': Maximum kernel-level retries exceeded
BR
Gael