2010-08-26 09:51 AM
You can do it with qtree SnapMirror. There are limitiations with volume SnapMirror since it replicates the volume metadata. Also, I don't think the 2050 supports OnTap 8.
2010-08-26 10:50 PM
For volume snapmirror the destination filer needs to be on the same or a higher Ontap version as the source filer.
From the FAS20x0 series only the FAS2040 supports ontap 8.
2010-08-27 02:08 AM
My mistake, I did mean the 2040.
So I would want to do volume replication from a 2040 (dot8) to a 2020 (dot7.3) - Which from what you are saying this can not be done unless the 2040 is downgraded to dot7.3?????
2010-08-27 07:48 AM
You CAN do it if you use QSM (QTree SnapMirror) instead of VSM (Volume SnapMirror). As an example, lets say you have a LUN in the root of a Flexvol on a system running 8.0, 7-Mode. You want to SM that LUN to a system running 7.3.3. You cannot use VSM since 7.3.3 does not know about the volume structure in a system running a higher OnTap release. In this case you would need to move your LUN to a Qtree (which can be done non-disruptively), and then you could use QSM to mirror the data from the OnTap 8, 7-Mode system to the 7.3.3 system. The reason for this is QSM is replicating only files (a LUN in this case) whereas VSM replicates the entire volume including metadata.
2010-08-27 08:01 AM
You absolutely can do that. If you already have LUNs presented to ESX/vSphere you can easily move those LUNs into qtree's on the fly, and then use QSM to replicate those to another system.