We did this transfer on a site to migrate around 150GB data between F630 to F760 - it went though at around 14-15MB/s (50+GB/hour) on a direct cross-over GbE connection.
Although it's not a requirement, I would sugggest using the same versions of ONTAP - we hit a hardware problem on one filer which aborted the transfer, & there was a problem with aborted transfers when the filers were on 5.2.1 and 5.2.3 resp. - we upped them both to 5.2.3 & all was well ;-)
Cheers Mike
-----Original Message----- From: owner-dl-toasters@netapp.com [mailto:owner-dl-toasters@netapp.com]On Behalf Of kevin graham Sent: 30 December 1999 11:54 To: toasters@mathworks.com Subject: volcopy and snapmirror performance
We're looking at moving 287gb (~10.7m inodes) worth of data from a 630 to a clean volume on a 760.
To schedule the downtime, I need to know if anyone has ballpark figures for calculating the tiem for a volcopy. The filers are well connected (gbit ether on both of them), and I can sacrafice big chunks of performance to make this go in a timely manner. (the 100mbit interfaces are inactive as well, if those should just be strapped together)
Later on, we're looking at trying to snapmirror 536gb (~17.2m inodes) spread pretty evenly across two volumes between two locations. Are there numbers available on the approximate overhead of the snapmirror protocol (delta bytes * overhead), and how often it would be feasible to run it (I'd prefer something in the neighborhood of 5-10 minutes).
The best numbers I could find on NOW were "36GB/hr will drive the cpu to 100%" without any reference to the filer model, cache sizes (the filer does do read-aheads, right?), inode density, etc...
thanks.
..kg..