HP XP P9500 Storage - Manual (Page 54)

Changing options system-wide
In this operation, you change concurrently copied volumes, path watch time, related SIMs
(system-wide).
Procedure 10 To change options system-wide
1. In Remote Web Console, click Actions > Remote Copy > Continuous Access Synchronous >
System Option.
2. Change to Modify mode by clicking the icon.
3. In the tree, click Storage System Option.
4. Right-click in the list area and select System Option from the menu. The related dialog box
displays.
5. In the Maximum Initial Copy Activities box, type the number of volumes that you want to be
copied concurrently during an initial copy or resync operation. The number can range from
1 to 512 volumes. The default is 64 volumes.
•
This setting may impact the performance of the primary system. This depends on this
setting and the amount of I/O activity. Using the default limits the impact on performance.
•
When you create or resychronize a greater number of pairs than you specify in Maximum
Initial Copy Activities, the system processes the specified maximum number, and starts
additional pairs after one of the specified number is synchronized.
For example, if you specify 70 for Maximum Initial Copy Activities and then create 75
pairs, the system starts the first 70 pairs but does not start the 71st pair until one of the
pairs is synchronized.
•
The number of initial copies is counted by LDEV. This is true for LUSE volumes, which are
composed of LDEVs. The initial copy of each LDEV of a LUSE volume is performed
separately.
6. In the Maximum Initial Copy Activities (CU) box, enable or disable whether to allow the number
of concurrent initial copy or resync operations at the CU level (from 1 to 15). If disabled,
Maximum Initial Copy Activities cannot be set at the CU level.
7. In the Path Blockade Watch (sec.) field, type the number of seconds that the system will monitor
for path blockades. The watch time can be set from 2 to 45 seconds. The default setting is 40
seconds.
If the status of all paths becomes “Monitoring” because of a path error, MIH may occur in the
host. The time of the Path Blockade Watch must be shortened than the setting time of MIH
timer in the host.
8. In the Path Blockade SIM Watch (sec.), type the number of seconds the system will monitor the
SIMs that are reported when paths are blocked. The SIM watch value can be set from 2 to
100 seconds. The value you enter must be larger than the Path Blockade Watch.
9. You can change the value after clicking Set by right-clicking it in the Preview list and selecting
Modify. In the dialog that appears, make any corrections and click Set.
To cancel the setting, right-click it in the Preview list and select Delete.
10. When satisfied, click Apply. This completes and saves the configuration.
Changing options for a specific CU
1. In Remote Web Console, click Actions > Remote Copy > Continuous Access Synchronous >
System Option.
2. Change to Modify mode by clicking the icon.
3. In the System Option window tree, select CU Option(LDKC#00).
54 Configuration operations