By default, Qognify recorders overwrite old files once the allotted storage space is full. The Dell EMC Safety & Security Lab recommends setting the recorders to delete the old file and create a new file once storage is full on Isilon based storage. Setting the recorder to delete old files optimizes resiliency and increases performance. Smartfail testing with the recorders set to delete old files demonstrated no video loss.
To set a new recorder to delete old files, add the string DeleteFileBeforeWrite="true"
to the Storage.cfg file.
For example:
<Logical_Storage NumOfFiles="807827" FileSize="2048" DeleteFileBeforeWrite="true"
CacheSizeInBuffers="640" KeptFilesRatioLimit="10" NTFS="false"
NetworkStorage="true" />