LSI SATA 150 1.1.5Drive Roaming and Drive Migration, 1.1.6Logical Drive Deletion

1.1.5Drive Roaming and Drive Migration

Note: Drive roaming and drive migration cannot be supported at the same time. One or the other feature can be supported at any one time, but not both features at the same time.

Drive roaming (also known as configuration on disk) occurs when the hard drives are moved to different channels on the same controller and the controller detects the RAID configuration from the configuration information on the drives.

Configuration data is saved in both non-volatile random access memory (NVRAM) on the RAID controller and on the hard drives attached to the controller. This maintains the integrity of the data on each drive, even if the drives have changed their target ID. Drive roaming is supported across channels on the same controller, except when cluster mode is enabled.

Drive roaming does not work if you move the drives to a new controller and connect them to different channels. If you move drives to a new controller, they must be on the same channel/target as they were on the previous controller, in order to keep the same configuration.

You must power off the host system and the drive enclosure before you use drive roaming.

Drive migration is the transfer of a set of hard drives in an existing configuration from one controller to another. The drives must remain on the same channel and must be reinstalled in the same order as in the original configuration.

1.1.6Logical Drive Deletion

The SATA 150 controllers allow you to delete unwanted logical drives and then use the disk space for a new logical drive. You can use the configuration utilities to create the next logical drive from the non- contiguous free space (‘holes’) and from the newly created arrays.

You can still create sequential logical drives, without using the non- contiguous segments. The utilities provide information about sequential segments, non-contiguous segments, and physical drives that have not been configured. You can use this information when you create logical drives.

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