RE: Gb Ethernet

[Pete Massiello - ML <pmassiello-ml@xxxxxxxxxxxx>]

While QFileSVr.400 is a great "tool", it has a limit of 2GB file size, which makes it useless.

	Pete

--
Pete Massiello
iTech Solutions
http://www.itechsol.com
http://www.iInTheCloud.com





-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Friday, January 11, 2013 3:56 PM
To: Midrange Systems Technical Discussion
Subject: Re: Gb Ethernet

This new information about virtual tape versus save files got our department thinking:
Can /QFileSvr.400 be used to host image catalog entries?

Methinks not.


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail to:  2505 Dekko Drive
          Garrett, IN 46738
Ship to:  Dock 108
          6928N 400E
          Kendallville, IN 46755
http://www.dekko.com





From:   DrFranken <midrange@xxxxxxxxxxxx>
To:     Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>, 
Cc:     rob@xxxxxxxxx
Date:   01/11/2013 02:29 PM
Subject:        Re: Gb Ethernet
Sent by:        midrange-l-bounces@xxxxxxxxxxxx



Does seem to matter!

Test 1: - Save File- QGPL to QGPL.
265727616 bytes, 6.561 secs, rate 40503.883 KB/sec.

Test 2: - PTF Image:
169478144 bytes, 1.835 secs, rate 92360.625 KB/sec.
  - So better than double the speed for IFS image vs QSYS.LIB file.

Test 3: - Save file- QGPL to IFS
265727616 bytes, 3.096 secs, rate 85837.562 KB/sec.
  - Double+ the speed writing to IFS instead of QSYS.lib

Test 4: - Save File- IFS to QGPL
265727616 bytes, 9.324 secs, rate 28498.646 KB/sec.
  - Curious that this is slower than QSYS.lib to QSYS.lib.

Test 5: - Save file- IFS to IFS
265727616 bytes, 3.644 secs, rate 72930.867 KB/sec.
  - YES 1/4 Slower than a PTF image! Odd....

All tests performed between two IBM i 7.1 partitions on POWER7 720. 
Network goes through VIOS out to Cisco Switch and to dedicated lan card 
on FTP server partition. Server partition is host, client partition is a 
guest.

         - Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com

On 1/11/2013 2:03 PM, rob@xxxxxxxxx wrote:
> *This message was transferred with a trial version of CommuniGate(r) 
Pro*
> > From IBM
http://www-912.ibm.com/systems/electronic/support/8625680A007CA5C6/1AC66549A21402188625680B0002037E/73ADF81C45A17B2D8625799800704687

> Apparently a savf is about the slowest thing you can FTP.
> and "Any transfer rate approaching 150mbs - 200mbs is <b>great</b>."
> Apparently Gb ethernet is not built so one job can get close to Gb 
speeds
> but, rather, the total aggregate speed of several jobs approach Gb.  Not
> that I'm seeing any sort of load taxing my ethernet.
>
>
> Rob Berendt