Home Page for the TeradataForum
 

Archives of the TeradataForum

Message Posted: Tue, 08 Feb 2000 @ 14:38:02 GMT


     
  <Prev Next>  
<<First
<Prev
Next> Last>>  


Subj:   StorageTek Silo Archive Performance
 
From:   Thomas F. Stanek

We have noticed a significant variation in performance throughput when performing an archive on our system. We currently have a 12 Node 5200 connected to a StorageTek Silo. The silo contains 6 tape drives, one per cabinet.

When Teradata utilization is above 85% busy, drive throughput decreases to about .5 MB/sec/drive. However, when the system is below 50% busy, we see drive throughput is about 6.5 MB/sec/drive.

Has anyone else seen this type of fluctuation in throughput? If so, does anyone have any suggestions about how to reduce the variability? Or at least explain why this is happening? We have some ideas, but we are still investigating. Obviously, we would like to see the higher throughput all the time.


Respectfully,

Tom Stanek
TFS CONSULTING
www.tfsconsulting.com



     
  <Prev Next>  
<<First
<Prev
Next> Last>>  
 
 
 
 
 
 
 
 
  
  Top Home Privacy Feedback  
 
 
Copyright for the TeradataForum (TDATA-L), Manta BlueSky    
Copyright 2016 - All Rights Reserved    
Last Modified: 27 Dec 2016