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Performance issues

New Member

Performance issues



I can't get more than 38 mb/s out of our new BL536A (MSL2024 4048 8096 and 1-8 G2 Autoloader).


  • It is connected using a dedicated 6Gb SAS card (P212/ZN).
  • Server - DL380 G7 with 12Gb and 24 cores (2.66) running 2008 R2 x64
  • Stopped all possible services
  • Updated to latest drivers and firmwares
  • HP L&TT sys performance for the drive gives me 338 mb/sec
  • HP L&TT Dev performance test gives me 120Mb/s
  • When I try to backup with any software, I can't get passed 40Mb/s (even with Data protector that came bundled with the drive)

What am I missing?


Re: Performance issues



1.    You said: "MSL2024 4048 8096 and 1-8 G2 Autoloader" Are all the 4 tape devices connected to the same 6Gb SAS card (P212/ZN)


2.    You said: "HP L&TT sys performance for the drive gives me 338 mb/sec"... Is the backup streaming from some other server?

I am an HPE Employee
Respected Contributor

Re: Performance issues

The problem will be with your Zero Memory P212 controller (I assume thats what you meant by P212/ZN?)

I've had this exact issue and installing a cache module on the controller improved the situation no end...


See the following advisory...

Please click the white Kudos star to the left if this post is helpful :)