In my experienced opinion (I have gone from ONTAP 7 ->GX, also from GX -> ONTAP 8, 7-mode, and now getting ready to do a 8.1 7-mode to 8.1 c-mode transition)
In the early days, rsync was bad. It was single threaded and you had to wait to parse the entire directory tree. (pre-3.0) In the new rsync (3.0 and higher), it is multi-threaded and a significant speed increase. It starts copying data sooner. (I typically do rsync -avHP /source/vol/ /dest/vol/ -> notice the trailing slashes....)
ndmpcopy may be hairy and tricky. there were some issues back in 6.x that were never fixed. The incremental support is not all that good. You can keep on going with plenty of rsyncs to refresh.
--tmac Tim McCarthy Principal Consultant
RedHat Certified Engineer 804006984323821 (RHEL4) 805007643429572 (RHEL5)
On Tue, May 29, 2012 at 3:09 PM, Jon Bousselot jon-bousselot@pacbell.net wrote:
Has anyone used ndmpcopy to migrate volumes from ontap 6.5 to 8.1 without going through any intermediate steps? The 8.1 docs say qtree snapmirror doesn't support source volumes prior to 6.5, so I'm looking for success stories on possible alternatives in case it doesn't work as advertised.
rsync takes a long long time, but it works fine. This is all linux data, nfs.
-Jon _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters