Type              (Recovery)

DESCRIPTION
"Type" identifies the managing facility of I/O to a recovery file. The "Type" of
recovery file is determined by the specification of the recovery file in the 
Sun MTP VSAM Configuration Table (VCT).


VALUES
When recovery is active, "Type" is one of three values: 'UNIX','NT' or 'Native'.
This datapoint is blank when recovery is not active.


INTERPRETATION
When the recovery file is an 'NT' or 'UNIX' file, it is managed by the host 
file system just like any other file. The file is identified by 
concatenating the "Filename" to the value of the "Environment" variable. 

'Native' recovery is an alternative method of employing recovery for
a Sun MTP region running on UNIX system. A 'Native' recovery file resides somewhere
on a raw disk partition managed exclusively by Sun MTP. I/O efficiency is 
improved with a 'Native' recovery file because Sun MTP bypasses overhead inherent
in UNIX file system management. 'Native' recovery is not supported for Windows
NT systems.


CONCLUSIONS
On UNIX systems, a 'Native' recovery file yields superior performance over a 
normal 'UNIX' file. However, the initial setup is more involved for a 'Native' 
file. First, you must choose a free disk area. This could be a completely free 
raw partition (one not used by a file system), or an unused portion of a raw 
partition. The space for a 'Native' recovery file must be formatted with the 
Sun MTP kixnrfs utility. Refer to the Sun MTP System Administrator's Guide for 
more details.  Since it is so easy to set up and resize a 'UNIX' recovery file,
it may be prudent to establish an optimum recovery file "Size" with a 'UNIX' 
file first, then transfer the file over to a 'Native' organization.
