HP StorageWorks XP Remote Web Console Software - Manual (Page 103)

Setting the Asynchronous Copy Options
The Async Option dialog box (see Figure 38 (page 103) ) allows you to set and modify the XP
Continuous Access Asynchronous copy option parameters for the connected storage system. To
open the Async Option dialog box, right-click the CT groups, and click the Async Option command.
The async options apply to the entire physical control unit, including all XP Continuous Access
P-VOLs and S-VOLs behind the control unit.
Figure 38 Async Option Dialog Box
The CLPR(#) drop-down list allows you to specify the CLPR ID. The default setting is 00.
The Pending Update Data Rate (%) option allows you to specify the XP Continuous Access
Asynchronous (and TrueCopy Asynchronous for Mainframe) sidefile threshold, which is the maximum
amount of cache that can be used for storing XP Continuous Access (and TrueCopy for Mainframe)
Asynchronous recordsets (sidefiles). You can select any value between 30% and 70% (10%
increments). For further information on the sidefile inflow control, see
“Inflow Control of Recordsets”
(page 23) .
The current pending update data rate is common to both XP Continuous Access and TrueCopy for
Mainframe operations. The most recently entered value (on the XP Continuous Access or TrueCopy
Asynchronous for Mainframe Option dialog box) will be applied to all XP Continuous Access
Asynchronous operations.
You can specify the Pending Update Data Rate from the Async Option dialog box of TrueCopy
for Mainframe. If the value of the specified Pending Update Data Rate is less than the value of the
I/O Delay Start or the I/O Delay Increase that you specified from the Async Option dialog box
of XP Continuous Access, the Pending Update Data Rate is available.
The I/O Delay Start option allows you to specify the threshold (30-70%), which is the maximum
amount of cache for starting the inflow control for the asynchronous copy. When the amount of
Asynchronous Operations 103