Your query more specifc to Peassler PRTG software. I just tried to Google it and found the below two links which may help you,
https://kb.paessler.com/en/topic/70159-hp-msa-2040-ssh-timeout
https://kb.paessler.com/en/topic/57133-i-have-problems-with-mutex-timeouts-what-can-i-do
Apart from the above, you can update MSA controller firmware to latest version as well. Please find the link to get firmware details,
http://h41111.www4.hpe.com/storage/msafirmware.html
Hope this helps!
Regards
Subhajit
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