What Is Persistent Binding For ?
Without persistent binding, after every reboot, the SCSI id of a LUN may change. For Example, under Linux, a LUN bound on /dev/sda could migrate to /dev/sdb after a reboot. The risks augments with multipathing. Based on that, it is obvious that many software may crash without persistent binding.
from http://www.storagesearch.com/datalink-art1.html
- Operating systems and upper-level applications (such as backup software) typically require a static or predictable SCSI target ID for their storage reliability and persistent binding affords that happening.
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