Users Guide

NOTE: If you perform the Clear operation on a SAS IOM, the IOM becomes active, if it is not already active and, the

storage configuration on both the SAS IOMs is cleared.

NOTE: Resolve any suboptimal health of the IOM, other than firmware mismatch, before updating the firmware. This action

ensures that the firmware is updated without downgrading the health of the SAS IOM.

Force active

You can use More Actions > Force Active to perform a failover on a "Passive" or "Degraded" switch. Performing a "Force

Active" operation on the SAS IOM is considered a disruptive operation and must only be used if necessary. When you perform a

"Force Active" operation, the SAS IOM becomes "Active" and the associated storage configuration is applied to the chassis.

You can use the Force Active option to resolve mismatches that occur when:

● The switches were configured earlier but are inserted in a chassis that did not have SAS IOMs earlier.

● Two switches from two different chassis are inserted into a third chassis.

You can also use Force Active as a preemptive action for servicing a switch. Ensure that the remaining switch is "Active"

before removing the switch that must be serviced. This in turn, prevents any disruption to the fabric that might occur if the

switch is removed when the other switch is "Passive".

Clearing configuration

You can clear the storage configuration of the SAS IOMs using More Actions > Clear. When you click Clear, the SAS IOM

becomes "Active" and the storage configuration is cleared from the chassis.

You can use the Clear option to:

● Reset a chassis configuration in one step.

● Resolve a worst case mismatch where two switches are taken from two different chassis and inserted into a third chassis. In

this scenario, it is unlikely that the two switches have a correct configuration. It is recommended that the Clear option is

used to clear existing configuration and create a correct configuration.

Use the Force Active and Clear options to act upon some critical and warning messages that are displayed in the OME–

Modular web interface, particularly, for a configuration mismatch.

Extracting IOM logs

You can collect a log bundle for support by selecting Extract Log. The log bundle collected from the SAS IOM also contains the

associated logs from all storage enclosures that are discovered by the IOM even if they are not currently present in the chassis.

Managing storage