
Procedure F: HP Data Protector
Quantum TC2201E User’s Guide 167
Figure 64 Netvault
Device Management
Procedure F: HP Data Protector 5
In order to increase the maximum block size on a Windows Media Agent
client, you must first modify its Registry. After modifying the Registry,
restart the computer. Drivers read MaximumSGList at boot time. The
actual formula that a Windows class driver uses to determine the
maximum transfer size is:
maximum size = ((number of supported scatter/gather elements - 1)*
4096)
For the typical aic78xx case, it renders the following:
((17-1) * 4096) = 64k (which corresponds to 56k usable data for Data
Protector)
Windows provides a mechanism to support more scatter/gather
elements via the Registry.
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