Marcin Wasilewski wrote (2006/01/18):
> >>>>SD Files Written: 515,401
> >>>>SD Bytes Written: 232,353,930,829
> >>>>Rate: 11186.1 KB/s
> >>>>It took about 6 hours to backup it..
> Oh, I didn't mention about the tape. I'm using LTO2 ( 200GB with
> compression ), I don't remember exactly it's writing speed, but I think it
> is about 80MB/s without hardware compression.
It seems that you mix parameters of all three different LTO
generations - which of them do you have really?
LTO1 LTO2 LTO3
Uncompressed capacity (GB) 100 200 400
Compressed 2:1 capacity (GB) 200 400 800
Native speed (MB/s) 15 30 80
Note that speed may somewhat vary among there LTO manufacturers.
> When I backup these large files the network transfer is about 25-30MB/s,
> but with these small it's about 5MB/s, so that is why average rate is 11MB.
It is really not too bad. My rate is up to 22 MB/s, but it is with LTO3
and data spooling (which is very good idea for all, who want not to reduce
life of their tape devices).
--
Rudolf Cejka <cejkar at fit.vutbr.cz> http://www.fit.vutbr.cz/~cejkar
Brno University of Technology, Faculty of Information Technology
Bozetechova 2, 612 66 Brno, Czech Republic
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