Quantum TC2201E Betriebsanweisung PDF herunterladen (Seite 188)

Procedure F: HP Data Protector

168 Quantum TC2201E User’s Guide

6 Start the regedit32 and add a DWORD value in the following

Registry key:

\\HKEY_LOCAL_

MACHINE\SYSTEM\CurrentControlSet\Services\aic78

xx\Parameters\Device0\MaximumSGList

7 Use the following formula to calculate the value of the

MaximumSGList:

MaximumSGList = (BlockSize/4096)+1

For example, the MaximumSGList value for a 256k block size is 65, as

follows:

MaximumSGList = (265k/4k) + 1 = 64 + 1 = 65

If you have, for example, three aic78xx based SCSI channels on your

system, change the appropriate ...\Device0, ...\Device1 or ...\Device2

value. If you want to set all adapters at the same time, specify

MaximumSGList for ...\Device\.... Omitting the numerical reference

sets the value for all aic78xx adapters.

The block size can also be changed using the Data Protector management

interface.

1 To do this, select the Devices & Media option from the drop down

list.

2 Right click on a discovered tape device and select Properties.

3 Select the Settings tab and then click on the Advanced button.

4 Select the Sizes tab and from here the block size can be modified as

shown in

figure 65 below.

1 2 ... 183 184 185 186 187 188 189 190 191 192 193 ... 201 202

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Quantum TC2201E Betriebsanweisung Seite 188