Applies to Data ONTAP 8 ONTAP 9 SCSI Enclosure Services (SES) IOM3 IOM6 IOM12 Issue System has enclosure service unavailable error. Example: Wed May 13 10:00:02 CST [node1: ses_callback_admin: ses.acc...Applies to Data ONTAP 8 ONTAP 9 SCSI Enclosure Services (SES) IOM3 IOM6 IOM12 Issue System has enclosure service unavailable error. Example: Wed May 13 10:00:02 CST [node1: ses_callback_admin: ses.access.sesUnavailable:critical]: Enclosure Services unavailable for one or more shelves on channel 3c. There is not hardware failure.