HP StorageWorks Enterprise File Services WAN Accelerator - Manual (Page 43)

HP S TORAGE W ORKS EFS WAN A CCELERATOR M ANAGEMENT C ONSOLE U SER G UIDE 43
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To enable HSTCP
protocol support 1. Click the Setup tab to expand the Optimization Service menu.
1. Click Protocol: HSTCP to display the Optimization Service - Protocol: HSTCP
page.
Figure 2-9. Optimization Service - Protocol: HSTCP Page
Enable in-path support. For detailed information, see “Enabling In-Path and Out-of-Path Support” on
page 22 .
Disable the Lempel-Ziv (LZ) compression
and SDR in in-path optimization policies. For detailed information about optimization policies if your WAN link capacity
is 100 Mbps, see
“Setting In-Path Rules” on page 25 .
With SDR enabled your throughput will bottleneck between 100 and 150
Mbps, which cancels out the benefit of HSTCP. If you have an Optical Carrier-
3 line or faster, turning off SDR makes sense and allows HSTCP to reach its
full potential. For a 2 Mbps link, regardless of the amount of latency, it is better
to keep SDR enabled, because the HSTCP mechanism is typically not triggered
until you reach beyond 100 Mbps of WAN throughput.
Task Description