well, and R100 uses the same head as an 880. if you carefully build the volumes and raid-groups such that you spread the I/O load across SCSI busses and ATA-SCSI bridges, you can make the R100 go pretty fast.
in my testing, the sustained seauential read performance is 120 Mbyte/sec. for mixed file sizes, I suspect it to be somewhat less. writes into the R100 sustain 60Mbyte/sec, with gusts up to 65 Mbyte/sec.
I rarely move whole volumes between filers, so I don't know the best way to do that. suggestions welcome.
-skottie
Phil Hill wrote:
Hi all,
does anybody know, how fast is a R100 ? We want to build an environment, which reduce the downtime in case of a disaster. Following in mind, some Netapp Filers do a SnapMirror over a WAN-connection to a R100. Beside the R100 is a spare-system which could replace any production-filer. In case of a disaster we are able to copy the volumes to the spare-system and replace it with the broken filer. This should be much faster then a full restore from a local tape. I am talking about 0.5TB - 1.5TB per remote filer. We also would do only a tape-backup from the R100, no local tape drives in the remote offices.
Questions:
- What is the real read-performance of a R100?
- What is the fastest way to duplicate the broken volumes from the R100 to the spare-system? volcopy ? ndmpcopy ? something else ?
- How long does it take to copy a 1TB volume to another filer.
- Does anybody have something like above described ?
Thanks in advance Phil