SSC-2: write protection(s)

[Dave Peterson]

* From the T10 Reflector (t10 at t10.org), posted by:
* "Dave Peterson" <dap at cisco.com>
*
Howdy All,

This is a query to determine which flavors of write protection(s) are
actually being used (or useful).

Software Write Protect - controlled from the Control mode page (SPC-3) or
the SWP bit in the Device Configuration mode page.

Associated Write Protect - controlled by the ASOCWP bit in the Device
Configuration mode page.

Persistent Write Protect - controlled by the PERSWP bit in the Device
Configuration mode page.

Permanent Write Protect - controlled by the PRMWP bit in the Device
Configuration mode page.


I believe Software, Persistent, and Permanent Write Protect provide some
use, but Associated is suspect.
Note: Permanent requires vendor specific behavior to disable.

Thanks...dap

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