Good morning,

I have a question concerning reported data transfer rates between the 
clients and the storage servers. All the above servers are connected to 
my NOC clients via a 1gb network. The servers are connected to several 
other clients via 100mb network and a 13mb VLAN.

Data rates for backups can vary widely. I have all clients running 
compression and the backup reports show compression results, varies of 
course based on the data type. I also have concurrency set to four, 
which is working.

Some examples,

1gb network
=============================
   FD Bytes Written:       215,582,592
   SD Bytes Written:       215,582,742
   Rate:                   2245.7 KB/s
   Software Compression:   62.0 %

   FD Bytes Written:       510,861,802
   SD Bytes Written:       511,074,097
   Rate:                   577.2 KB/s
   Software Compression:   80.0 %

   FD Bytes Written:       77,243,969
   SD Bytes Written:       78,145,766
   Rate:                   351.1 KB/s
   Software Compression:   84.4 %

100mb network
=============================
   FD Bytes Written:       3,486,750,378
   SD Bytes Written:       3,488,784,689
   Rate:                   2391.5 KB/s
   Software Compression:   42.4 %

   FD Bytes Written:       3,486,750,378
   SD Bytes Written:       3,488,784,689
   Rate:                   2391.5 KB/s
   Software Compression:   42.4 %

13mb VLAN
=============================
   FD Bytes Written:       35,879,089,133
   SD Bytes Written:       35,910,549,602
   Rate:                   1385.2 KB/s
   Software Compression:   41.1 %

   FD Bytes Written:       9,803,307,103
   SD Bytes Written:       9,809,416,473
   Rate:                   1273.0 KB/s
   Software Compression:   57.3 %

   FD Bytes Written:       434,184,031
   SD Bytes Written:       434,204,782
   Rate:                   943.9 KB/s
   Software Compression:   82.0 %


I'm not sure how to interpret the variation in rates. I don't think I 
have a problem, though I would expect the backups across the 1gb network 
to be far faster than they are. The backups across the 1gb network are 
all FreeBSD boxes, the backups across the 100mb and the 13mb VLAN are 
Windows and RedHat servers. The dir, and the sd clients are running on 
FreeBSD servers dedicated to that task, there are no other processes 
running.

Any ideas where I might start looking?

DAve


-- 
Three years now I've asked Google why they don't have a
logo change for Memorial Day. Why do they choose to do logos
for other non-international holidays, but nothing for
Veterans?

Maybe they forgot who made that choice possible.

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