Lenovo ThinkSystem DE Series Manual page 140

Before the conversion
iSCSI FC
FC iSCSI
Converting from FC/iSCSI to iSCSI (not applicable to controllers without two base-board
ports on the rear)
• Synchronous Mirroring is not supported for iSCSI.
• If you plan to convert the ports that are being used for mirrored relationships, you must
deactivate mirroring relationships before applying the feature pack.
Possible data loss — If you do not delete the mirroring relationships that

occurred over FC before converting the ports to iSCSI, the controllers might
lock down, and you might lose data.
• If you do not plan to convert the ports that are being used for mirroring, mirroring operations will
be unaffected.
• Before applying the feature pack, you should confirm that all mirror consistency groups are
synchronized.
• After applying the feature pack, you should test the communication between the local storage
array and the remote storage array.
Same host protocol and mirroring operations
Mirroring operations are not affected if the host ports being used for mirroring keep the same
protocol after you apply the feature pack. Even so, before applying the feature pack, you should
confirm that all mirror consistency groups are synchronized.
After applying the feature pack, you should test the communication between the local storage array
After the conversion
(2) FC
(1) FC
FC (2)
FC (2)
Required
steps
Synchronize
mirror
consistency
groups
before and
test
communicat
ions after
Delete
mirroring
relationships
before and
re-establish
mirroring
after
133