Hello
if we use Bigasm to test the speed of the link and devices, does this generate
random data (non-compressable) or data which still can be compressed?
if we use (without networker) the unix "dd" command to send data from /dev/zero
to tape, this data should be highly compressable?
however using both described methods above, I do not succeed in writing more
that 55-65MB/s to a IBM LTO2 taped drive comming from a solaris 9 (4CPU, 8GB
ram) host. the SAN is fully 2 Gbs.
I measured this using the nsrio utility (written by D Stes) which I found on
the web.
I thought that the max speed of a LT02 was at least 70MB/s and even maybe up to
140MB/s?
what kind of max speeds have you attained with LT0 1, 2 or 3?
Thanks
Bart
> __________________________________________________
> Jespers Bart
> IT Consultant LCNA
> FSC Professional Services
>
> Fujitsu Siemens Computers
Square Marie Curie 12 (NEW ADDRESS!)
1070 Brussels (NEW ADDRESS!)
> Belgium
>
> Tel +32 (0)2 536 64 38 (NEW Number!)
> Fax +32 (0)2 536 64 32 (NEW Number!)
> Mobile +32 (0) 475 955308 (SAME Number!)
> E-mail mailto:bart.jespers AT fujitsu-siemens DOT com
> Internet: <http://www.fujitsu-siemens.com>
>
> This message may contain confidential and/or privileged information. If
> you are not the addressee or authorized to receive this for the addressee,
> you must not use, copy, disclose or take any action based on this message or
> any information herein. If you have received this message in error, please
> advise the sender immediately by reply e-mail and delete this message.
Thank you for your cooperation.
To sign off this list, send email to listserv AT listserv.temple DOT edu and
type "signoff networker" in the
body of the email. Please write to networker-request AT listserv.temple DOT edu
if you have any problems
wit this list. You can access the archives at
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
|