Product data

76 PowerVM Migration from Physical to Virtual Storage
The following notes apply to the use of a SAS-connected tape drive:
򐂰 At the time of writing, only an IBM SAS-attached tape drive is supported.
򐂰 It is preferable to create a separate virtual SCSI host adapter than to use one
already in service for disks or optical storage. This is because of the different
block sizes used to transfer data for tape operations and a separate virtual
SCSI adapter is more portable.
򐂰 The tape drive is not a shared device. It can only be in use by one partition at
a time.
򐂰 The Virtual I/O Server does not support functions to move media, even if the
backup tape device supports them. You must manually load the media.
To use a SAS configured tape drive:
1. Create a separate virtual SCSI server adapter. This example shows vhost4 as
a server SCSI adapter that has no other mappings.
2. Use the Virtual I/O Server mkvdev command to map the tape drive:
mkvdev -vdev rmt0 -vadapter vhost4
The system displays a message similar to the following:
vttape0 available
Further information can be found at the following IBM InfoCenter links:
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/topic/iphb2/ip
hatvirtualadapters.htm
http://publib.boulder.ibm.com/infocenter/powersys/v3r1m5/index.jsp?topic
=/iphb1/iphb1_vios_tape.htm