2013-05-13 05:52 AM
I understand tape can not be multipathed.
Question1: Can a tape drive be shared between filer heads in a cluster ?
for eg1: FilerA:0d -----[tapedrive]------0d:FilerB
FilerA<--> Filer B are partners.
The reason for doing this : when a failover happens the tape drives remain accessible on the partner node
Question2: The tape drive is IBM LTO5. Each drive has a PortA and PortB.
is the below configuration valid:
for eg2: FilerA:0d-----portA[tapedrive]portB ------0d:FilerB
The only difference between scenario eg1 and eg2 is that, in eg1 the tape is shared between filer heads using same tape portA. In eg2 sharing is by means of portA and port B of the tape drive.
2013-05-13 05:59 AM
Interesting question, I have shared on 7-Mode, using a switch to share a single tape drive. and seeing that CDOT NDMP works just like 7-Mode i would expect it to work. however, it would be down to the backup software you are using, and, if both ports on the tape drive itself will failover..
2013-05-13 07:22 AM
not worried about the backup software at this time. The above question is purely from a Netapp perspective.
ignore the backup software and imagine that I am using native dump command to backup.
My ONTAP is 7 mode (Not cluster mode).