Appendix 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 ReservedSpace parameter can be set to Yes or No:
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