Fujitsu ETERNUS AB Series Maintaining Hardware page 92

Note: The following considerations apply only if you are converting a storage array that has already been in
use. These considerations do not apply if you are converting a new storage array that does not yet have hosts
and volumes defined.
Converting from FC to iSCSI
• Asynchronous Mirroring requires both the local storage array and the remote storage array to use the same
protocol.
• If you are currently using Asynchronous Mirroring through the baseboard, you must deactivate
Asynchronous Mirroring relationships using those ports before applying the feature pack.
• Refer to the online help for SANtricity System Manager to delete all mirror consistency groups and
remove all mirrored pairs from the local and remote storage arrays. In addition, follow the instructions
in the online help to deactivate Asynchronous Mirroring.
Note: If your configuration contains SAN Boot hosts connected to the FC baseboard ports, check the Fujitsu
support site to ensure that the configuration is supported on iSCSI. If it is not, you cannot convert the host
protocol to iSCSI.
• The Synchronous Mirroring feature is not supported for iSCSI.
• If you are currently using Synchronous Mirroring relationships via the baseboard ports, you must
deactivate those Synchronous Mirroring relationships.
• Refer to the online help for SANtricity System Manager to remove all synchronous mirrored pairs, which
removes mirror relationships on the local storage array and on the remote storage array. In addition,
follow the instructions in the online help to deactivate Synchronous Mirroring.
Attention: If you do not deactivate Synchronous Mirroring relationships before converting to iSCSI,
your system will lose data access and data loss might occur.
Converting from iSCSI to FC
• Asynchronous Mirroring requires both the local storage array and the remote storage array to use the same
protocol. If you are currently using Asynchronous Mirroring with the baseboard ports, you must deactivate
Asynchronous Mirroring before changing the protocol.
• Refer to the online help for SANtricity System Manager to delete all mirror consistency groups and remove
all mirrored pairs from the local and remote storage arrays. In addition, follow the instructions in the
online help to deactivate Asynchronous Mirroring.
Converting IB-iSER to/from IB-SRP
• You do not have to make any changes to your hardware when you convert from/to iSER to SRP.
• The Data Assurance (DA) feature is not supported for SRP.
• The DA feature is not supported for IB-SRP. If you are currently using this feature via the IB-HIC and you
want to convert those ports from iSER to SRP, you must permanently disable DA on all volumes. Refer to
the online help for SANtricity System Manager to change the settings for a volume to permanently disable
the data assurance setting.
Note: After it has been disabled, DA cannot be re-enabled on the volume.
• Confirm the following:
• SANtricity System Manager is accessible via web browser.
• The storage system is running SANtricity OS (controller firmware) version 08.40.11.00 or later.
Mirroring operations need same host protocol
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 and the remote storage array. Refer to the online help for SANtricity System
Manager if you have questions on how to do this.
| Host port protocol |
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