DRD use case
High Availability with DRD and MirrorDisk/UX (slide 3 of 3)Modified clone w/patches
Active
1.Original mirrored system image is active
2.Create mirrored clone of the original system image (drd clone)
3.When complete, four copies of system image exist (drd status)
4.Patch inactive image (drd runcmd swinstall)
5.When modification completes, have an unmodified original image and a modified clone
6.Synchronize files from the active image to the clone – password files, log files, etc. (drd sync)
7.Boot the clone when ready (drd activate)
8.In event of a sw problem, boot the unmodified original image to return to original state
(drd activate)
9.In the event of a hw problem, run from mirror
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