Multiple drive index

Hi All,

I am observing a very strange issue in device monitor recently.

There are 2 media servers. sharing 6 drives (LTO-5). in devices -> Drives tab . in all the drives rather than having a unique index of their own. all drives are displaying index as <multiple> . although tapes are mounting in all drives. I feel there is something strage. I deleted all drives from both media servers and did device configuration from GUI again and found <multiple> index in all 6 drives.

Netbackup version : 7.1

Master server : Solaris,Media servers : Solaris

Regards

Amit