Controlling HSC Assisted Copy and MinimergeOperations
Thissection describes how to control assisted copy and minimerge operationson an HSC controller. It is not possible to control these operationson an HSJ controller.
To disable both the merge and copy performance assists onthe HSC controller, follow these steps on each HSC controller forwhich you want to disable the assists:
Press Ctrl/Cto get to the HSC prompt.
When the HSC> prompt appears on the terminalscreen, enter the following commands:
HSC> RUN SETSHO SETSHO> SET SERVER DISK/NOHOST_BASED_SHADOWING SETSHO-I Your settings require an IMMEDIATE reboot on exit. SETSHO> EXIT SETSHO-Q Rebooting HSC. Press RETURN to continue, CTRL/Y to abort:
After you issue these commands, the HSC controller automaticallyreboots:
INIPIO-I Booting...
To reenable the assists, follow the same procedure on yourHSC controller, but use the /HOST_BASED_SHADOWING qualifier on theSET SERVER DISK command.
Use the HSC command SHOW ALL to see whether the assists areenabled or disabled. The following example shows a portion of theSHOW ALL display that indicates the shadowing assists status:
HSC> SHOW ALL . . . 5-Jun-1997 16:42:51.40 Boot: 21-Feb-1997 13:07:19.47 Up: 2490:26 Version: V860 System ID: %X000011708247 Name: HSJNOT Front Panel: Secure HSC Type: HSC90 . . . Disk Server Options: Disk Caching: Disabled Host Based Shadowing Assists: Enabled Variant Protocol: Enabled Disk Drive Controller Timeout: 2 seconds Maximum Sectors per Track: 74 sectors Disk Copy Data connection limit: 4 Active:0
HP Volume Shadowing for OpenVMS
Ensuring Shadow Set Consistency
