On Mon, 17 Jul 2006, Gabriele Bulfon wrote:

> Thanks,
> this is very interesting.
> My LTO2 drives (I have many installed) are from Certance.

Mine are HP drives installed in a HP MSL6000 library (aka NEO4000)

> Do you achieve these rates on a SunFire 280R?

No, Wintel hardware (HP Proliant DL580g2 - old tech now)

> What is your scsi card?

HP badged Qlogic Fibre HBAs (2Gb/s, but 4Gb/s is available now)

> I usually never achieve more than 8-10MB/s.......how can it be?!

What do Certance quote as maximum throughput on the drives?

Typical problems are:

1: Slow scsi speeds
2: bad termination
3: Long cables
4: Scsi contention

The drives here go through a fibre-scsi router on the library, which has a 
dedicated U320 bus per drive. Newer (LTO3) drives are direct fibre 
attached and even faster....


AB



-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Bacula-users mailing list
Bacula-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bacula-users

Reply via email to