Installation guide

Setting and Modifying Controller Options
4-28 GAM Client v3.00 and WSAM User’s Manual
not all of them failing.
• Smart Large Host Transfers. For transfers larger than the stripe
size, allows selection of Coalesce (fewer disconnects) on host data
transfers.
• Elevator Ordering Of Device Queues. Attempts to keep the drive
heads moving in the same direction as long as possible to improve
performance. Assumes LBAs are physically sequentially ordered.
• Coalesce Device Queues. Joins data from adjacent I/Os into a single
I/O to improve performance.
• Super Read Ahead (SRA). Extends the Read Ahead process by
always reading an extra cache line on a read request, and reading an
additional cache line when a cache hit occurs. Most useful for
applications where read-sequential data is high.
• True Verification Of Data. Performs a true verify with data
comparison.
• Write Through Verify. During error handling, this turns on Force
Unit Access for reads and writes.
• Operational Fault Management. Allows the controller to take
autonomous actions when a failure occurs. Do not disable this
function unless specifically instructed to do so as part of a
troubleshooting diagnostic activity.
• Disable (by checking) or enable (by unchecking) the following option:
• Wide Transfer On Host. When disabled, the controller will
negotiate only narrow data transfers. Doing this unnecessarily will
result in slower performance.