IBM DATA MIGRATION SERVICES Brochure page 11

Storage migrations made simple.
Page 11
Highlights
Most important, the storage tech-
nology upgrade was transparent
to users.
Softek TDMF technology was chosen because the asynchronous, host-based
migration was cost-effective, able to work with disparate platforms, did not require
changes to the source environment and could accommodate the increased volume
size in the target environment. The benefits of the TDMF solution were that the
Oracle application's storage volumes were augmented, enabling continued expan-
sion of capacity. In addition, the migration was completed without significant
downtime to this mission-critical application. Most important, the storage technol-
ogy upgrade was transparent to the application's end users.
Softek solution: Local UNIX array-to-array migration with Softek
TDMF solution
1. Softek TDMF technology was installed on the host prior to the weekly sched-
uled downtime and configured to map the source and target devices. A script
was written to unmount and remount the source devices during the weekend
outage. The script was run just after the weekly backups and took less than
30 seconds to run, so the scheduled downtime was not affected.
2. The TDMF solution started the copy operation once applications are back
online. Copy ran slowly in background so as not to significantly affect the
operation of the application.
3. All volumes were synchronized within 48 hours.
4. Switchover was performed without service outage. Old volumes were left in
place while performance of new volumes was validated.