Emu XL-7 & MP-7 User's Group

Hi

Hard disks have their inner mechanisms hermetically sealed from moisture, however, the circuit board on the outside of a drive is exposed.  Hard drives also have mechanisms that pull the heads away from the data portion of the platter after power is removed so shock during unpowered moves presents little risk to data.

Notebooks use exactly the same type of mechanisms and seals but are slightly less prone to damage because the mechanisms are of lower mass.

In both case mounted and notebook systems, the main circuitry (motherboard, RAM, etc) is exposed to the atmosphere and therefore can be affected by high humidity.  All such electronics are rated for about 90 -95% RH (relative humidity) non-condensing (meaning the warm humid air does not meet a cooler surface causing moisture condensation).  Unless you buy a specialized sealed system.

There are many rack mount cases (industrial types) available that support regular PC motherboards and offer some rubberized mounting of the hard drives to reduce some shock.  However, since drives are mechanical devices, they have a higher failure rate than the circuits that run them and for such critical applications as regular performance, I would set up a second drive in the system that is a mirror of the first so that a quick recovery can be made if the first drive were to fail.

Bob
Corona/Riverside, CA


  ----- Original Message ----- 
  From: Turby 
  To: xl7@yahoogroups.com 
  Sent: Sunday, November 21, 2004 1:07 PM
  Subject: [xl7] OT Laptop or Shuttle PC



  We discused around this threat once, but i still like to recollect 
  some opinions about it...

  I was about to buy a 19inch rack and an LCD screen, in the first 
  place because of money, but i talked to a very friend of mine... he 
  advised about the risk of Hard disc damages because of the vibrations 
  and [sorry dont know the english word] the wetness of the air in 
  crowded clubs and outdoor. He said a Laptop may be more resistant to 
  that kind of condicions. Anyhow lots of people work with shuttle case 
  PCs and i wonder if they use a special kind of harddisk?

  Further i checked out some Notebooks. Seems like most of the 
  manufacturers use shared VideoRAM lately and rEalm advised that they 
  aint got at all for audio proposals. Lets say that the Notebook have 
  512 MB of RAM, if i dedicate 16 RAM to the VideoCard, is there still 
  danger of Dropouts or whats the problem with shared RAM? I didnt want 
  to replace my desktop PC, i like to use it for DJ proposals and some 
  out of studio recordings.




        Yahoo! Groups Sponsor 
              ADVERTISEMENT
             
       
       


------------------------------------------------------------------------------
  Yahoo! Groups Links

    a.. To visit your group on the web, go to:
    http://groups.yahoo.com/group/xl7/
      
    b.. To unsubscribe from this group, send an email to:
    xl7-unsubscribe@yahoogroups.com
      
    c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. 



[Non-text portions of this message have been removed]