DL 360 G7 and MDS600 IO Module

Hello,

We have 3 ProLiant DL360 G7 with MDS600 Drive arrays.

Every 2-3 months, one of these servers don't see the half of the drive array.

This occurs always during database mainternance of these Exchange servers, at night (high disk IO load)

Our provider replace the IO module. Everything is OK but the issue starts again, on another server 2-3 months later

Can i do something?

Thank you