The “-P” option can be used to update a device that is online and the change will take affect at the next reboot.Īn initial queue_depth setting of 8 is recommended. The device must be offline to make the change. The queue_depth can be adjusted by issuing the “chdev –l hdiskx –a queue_depth=x”. Queue_depth is set at the device level in AIX.Hitachi ODM updates detailed descriptions and download available at: It is highly recommended to install the ODM updates (either the HDLM updates or the MPIO updates) at the same time so only one reboot is required.ĥ.0.0.4 Or 5.0.0.5 - update for device supportĥ.0.52.1 – update for AIX 5.2 includes dynamic tracking supportĥ.4.0.1 - update for health check feature Installing any of the Hitachi ODM updates requires a reboot. It is required for support from IBM under the Service Implementation Plan with Hitachi Vantara. The Hitachi ODM update is a set of predefined attributes to identify disk devices. This will set the default attributes, rw_timeout=60 and queue_depth=2. Install the ODM update provided by Hitachi Vantara.Storage Array General Recommendations for AIX
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