The Network Server 500 and Network Server 700 contain a flexible SCSI backplane that allows the physical hot swapping and hot removal of SCSI wide and narrow devices. This ability to gracefully handle the logical addition and removal of drives is operating-system dependent.

The optional Network Server PCI RAID Card lets the AIX operating system be buffered from the logical consequences of drive addition and removal when setup in a RAID configuration. Hence, hot plug and removal is only recommended for RAID configurations.

WARNING An optional PCI RAID card must be installed with RAID level 5 configured to ensure that data will not be lost when drives are hot swapped.

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