Symptoms:
When using the hardware acceleration (VAAI) XCOPY SCSI command with a storage array that supports it, in some cases when the storage array returns a Check Condition with Sense/ASC/ASCQ indicating "Copy Aborted, Third Party Device Failure", you can experience these symptoms:
VMware vSphere ESXi 5.0
This issue occurs when the buffer overflows. A buffer overflow occurs when a program or process tries to store more data in a buffer (temporary data storage area) than it was intended to hold. Since buffers are created to contain a finite amount of data the extra information, which has to go somewhere, can overflow into adjacent buffers, corrupting or overwriting the valid data held in them.
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Disabling the VAAI functionality in ESXi/ESX