Migrating iSCSI and iSER-attached hosts

Migrating from iSCSI to iSER-attached hosts

To migrate from iSCSI-attached hosts to iSER-attached hosts, your host must have 25 Gbps iSER connectivity.

1. Create iSCSI sessions on both nodes through the 25 Gbps ports by using the command that is described in the Logging in to discovered targets topic.
2. Release the SCSI3 reservations over iSCSI.
3. Log out of the iSCSI sessions on node2 by using the command in step 1 that is described in the Logging out from targets topic. The iSCSI sessions on node1 must still exist.
4. Create new iSER sessions on node2 by using the command that is described in the Logging in to discovered targets topic. It might take up to 30 minutes for multipathing and I/O to stabilize.
5. Log out of the iSCSI session on node1 by using the command that is described in the Logging out from targets topic. The iSER sessions on node2 must still exist.
6. Create new iSER sessions on node1 by using the command that is described in the Logging in to discovered targets topic.

Migrating from iSER to iSCSI-attached hosts

1. Release the SCSI3 reservations over iSER.
2. Create iSER sessions on both nodes through the 25 Gbps ports by using the command that is described in the Logging in to discovered targets topic.
3. Log out of the iSER sessions on node2 by using the command in step 2 that is described in the Logging out from targets topic. The iSER sessions on node1 must still exist.
4. Create new iSCSI sessions on node2 by using the command that is described in the Logging in to discovered targets topic. It might take up to 30 minutes for multipathing and I/O to stabilize.
5. Log out of the iSER session on node1 by using the command that is described in the Logging out from targets topic. The iSER sessions on node1 must still exist. The iSCSI sessions on node2 must still exist.
6. Create new iSCSI sessions on node1 by using the command that is described in the Logging in to discovered targets topic.