HP OpenVMS Systems

ask the wizard
Content starts here

RAID storage?

» close window

The Question is:

 
Prior to deploying a new Alpha, we would like your opinion on write
caching/Raid 5 options for a production data drive...
 
1) If the power fails, as well as the battery for the controller, can files
become "corrupted", i.e. the header and index do not match the data
rendering the file unusable?
 
If so, are there any utilities to "fix" the file to a usable format?
 
2) If the battery is installed in the controller, what possible events can
cause the write cache operations to not complete?
 
As you can see, I am somewhat hesitant to install write caching on a
production drive, however, without it our application is suffering from I/O
overhead...
 
Any other ideas or suggestions?
 
Your feedback is much appreciated.
 
RFox, VP IT, Quartet Manufacturing

The Answer is :

 
  Acquire a RAID Array subsystem with dual redundant controllers such
  as the RA450 (FWD) or RA7000 (UltraD) -- with this configuration, the
  failure of a controller or battery will cause the other controller to
  take over and complete the transaction.
 


  

     
     
answer written or last revised on ( 8-JUL-1999 )

     
» close window