Installation guide

Software Operation Manual
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5.5.3.1.9 Write Protection:
Enable this protection to prevent any data being written to Volumes.
5.5.3.1.10 Tag Queuing
This option, when enabled, can enhance overall system performance under
multi-tasking operating systems. The Command Tag (Drive Channel) function
controls the SAS command tag queuing support for each drive channel. This
function should normally remain enabled. Disabled this function only when
using older drives that do not support command tag queuing.