ATS is part of the vStorage APIs for Array Integration (VAAI) , designed to replace traditional, inefficient SCSI reservations.
: Used SCSI reservations to lock an entire LUN (Logical Unit Number), preventing other hosts from accessing it entirely during updates. ATS Method ATS is part of the vStorage APIs for
sg_persist -o -P -K 0x12345678 -T 3 --preempt-key=OLD_KEY /dev/sdX designed to replace traditional