Difference between revisions of "Hard drive power usage"

From HeepyWiki
Jump to navigation Jump to search
Line 1: Line 1:
 
I've measured the current draw of various 3.5" disk drives as they power up, on both the 5v and 12v rails.  
 
I've measured the current draw of various 3.5" disk drives as they power up, on both the 5v and 12v rails.  
 
This is a fair indicator of the peak draw of the drives and helps judge power provisioning requirements, for instance when you have a dozen or a few thousand of them all spinning up at the same time.  
 
This is a fair indicator of the peak draw of the drives and helps judge power provisioning requirements, for instance when you have a dozen or a few thousand of them all spinning up at the same time.  
 +
 +
For a more thorough investigation of a whole-system power usage profile, see [[http://xymoc.com/supermicro]]
  
 
* '''Western Digital Caviar Green 2TB.'''  
 
* '''Western Digital Caviar Green 2TB.'''  

Revision as of 06:28, 17 January 2012

I've measured the current draw of various 3.5" disk drives as they power up, on both the 5v and 12v rails. This is a fair indicator of the peak draw of the drives and helps judge power provisioning requirements, for instance when you have a dozen or a few thousand of them all spinning up at the same time.

For a more thorough investigation of a whole-system power usage profile, see [[1]]

  • Western Digital Caviar Green 2TB.

Wd20eads.gif

  • Samsung HD103UJ 1 TB, 7200 RPM SATA - 7.4 watts at idle.

Samsung.gif

  • Seagate ST31000340AS Barracuda 7200.11, 1 TB, 7200 RPM SATA - 8.5 watts at idle.

St31000340as.gif

  • Western Digital "Green" 1 TB SATA - two samples which behaved differently.

Older batch is red/green, newer batch is blue/purple.

Wd10eacs-both.gif

  • Hitachi HDS721010KLA330 1 TB SATA - 9.6 watts at idle.

Hitachi1T.gif

  • Western Digital RE2 WD5000YS 500 GB SATA - "Raid Edition", 8.9 watts at idle.

Wd500.gif

  • Hitachi HDS724040KLAT80 400G PATA - 9.0 watts at idle.

Hitachi400.gif

  • Maxtor Maxline II 320GB PATA - 6.4 watts at idle.

Maxtor.gif