Quantum 3.5.1 User Manual
StorNext User’s Guide
327
Appendix A
A
Operating Guidelines
This appendix contains information pertinent to operating StorNext, as
well as some operating guidelines and limitations you should consider.
The Reserved Space Parameter
As of StorNext 3.0, the method of accounting for reserved space has
changed. The
MaxMBPerClientReserve
parameter from the StorNext file
system configuration file (
/usr/cvfs/config/*.cfg
) has been deprecated. All
values except
0
are ignored for this parameter. In addition, there is a new
parameter,
ReservedSpace
.
The
ReservedSpace
parameter lets the administrator control the use of
delayed allocations on clients.
ReservedSpace
is a performance feature
that lets clients perform buffered writes on a file without first obtaining
real allocations from the metadata controller (MDC).
The
The
ReservedSpace
parameter can be set to
Yes
or
No
: