Using the APP Recorder 6-39
6.11.10 Reserving Memory and Defragging the Data Drive
Occasionally, you may need to reserve memory and/or defragment the data hard drive remotely. Reserving
memory or defragmenting the hard drive will take up considerable CPU time (hours) and once started, you
will be unable to stop these processes remotely.
Perform these functions only if there is little or no likelihood of a fault
for 2 to 24 hours.
To Reserve Memory
1. Make sure Sampling tab is set as desired.
2. Go to Chassis tab. Create a temporary Chassis Configuration that contains the number of analog
channels you want to reserve memory for plus add 10% more channels than actual channels
present.
We recommend keeping 30% or more hard drive space available for
other computer operations
3. In the APP Recorder window, from the Maintenance menu, click Reserve Memory.
A Warning message appears.
4. Click Yes.
5. To check if the reserve memory process is finished, look at the APP Recorder trace file. In this
file, the message, “Begin Reserve Memory” appears when the reserve memory process starts. The
message, “End Reserve Memory” appears when the process finishes. For information, see
Viewing Trace Files.
6. Reserve memory is done to allocate designated space on the computer hard drive for continuous
recording. Reserving memory helps eliminate disk fragmentation over time. A disk defrag should
be done after reserving memory.
To Perform a Defrag Analysis, Defrag the Data Drive, and View the Results
1. In the APP Recorder window, from the Maintenance menu, click Run Defrag Analysis on
Data Drive.
2. After viewing the results, do you want to defrag the data drive?
If yes, continue with step 3.
If no, you are finished with this procedure.
3. From the Maintenance menu, click Defragment Data Drive….
A confirmation window appears.
4. Click the Yes button.
5. Wait a minute or two.
6. From the Maintenance menu, click Show Defragment Status.
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