Updated: Storage disconnects when using VAAI ATS on vSphere 5.5 Update2 and vSphere 6.0

alert

IBM has released a flash alert regarding a new behavior introduced in vSphere 5.5 Update2 and vSphere 6.0 where VAAI ATS (Atomic Test and Set or in the other words Hardware accelerated locking) is used for heartbeat I/O. http://www-01.ibm.com/support/docview.wss?uid=ssg1S1005201 According to IBM: Due to the low timeout value for heartbeat … Continue reading