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Note: If the scenario is a single node or all cluster node replacement, use the
span-allow-access command to attach the storage when the MAC ID
changes.
Previous backups
A system backup preserves two critical components of information:
SMU configuration
■
Server configuration
■
The backup form for an embedded SMU is different than one from an external SMU.
Depending on the replacement scenario severity, different limitations might exist for the
system recovery.
Important: It is assumed that customers are frequently establishing backups
somewhere safely off the platform for recovery purposes. If there is no
backup, and the system to be replaced is nonfunctional, then a manual
recovery process is required to reestablish a functional system. The duration
of this manual recovery is directly related to the complexity of the original
configuration. All data and file systems are preserved independent of a
backup.
Upgrades
Replacement servers can be down or above a revision, and not at the expected level of
firmware required at the customer site. An upgrade is typically required during the
replacement process, which is not covered in this document. It is assumed that all
services personnel performing a replacement have already been trained, and know
where to get this information within their respective organization.
Manually installing an embedded SMU (if necessary)
HNAS 3080/3090 spare or replacement units are shipped without the embedded SMU
installed.
Hitachi NAS Platform 3080 and 3090 G2 Hardware Reference
Appendix A: Server replacement procedures
Previous backups
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