Early 2008 Mac Pro-What type of HD? Smart failing?

in Current Mac Hardware edited January 2014

I have an early 2008 Mac Pro and have two hard drives in it.  The main system drive is a 2TB Western Digital drive I installed about a year ago.  The 2nd drive is a 1TB Seagate drive which is the original drive that came with the Mac Pro.

When looking at Disk Utility a few days ago I realized the drive is showing up in Red and it's saying that SMART is failing.  I've never had this happen before and like having a warning. 

First Question:

When SMART shows up as failing can it be a false alarm or is it likely a definite sign of impending hard drive failure?  When this happens, does the drive frequently fail quickly or does it take awhile?  The fortunate thing is I back this drive up frequently to Time Machine.

Second Question:

What SATA speed does the Mac Pro handle?  I see many hard drives that are 3.0GB/s and some that are 6.0GB/s. Does the Mac Pro handle the faster 6.0GB/s?  If not, would they still work but just not at the additional speed?

I may consider upgrading to a 1.5TB or 2TB but figured I'll go with a Western Digital or Seagate drive.  I see cache ranging from 16MB to 64MB and speeds at 5400RPM and 7200RPM.  Between these two which is more important, large cache size or RPM's? 

Thank you for your help.


  • Reply 1 of 2
    tallest skiltallest skil Posts: 43,399member

    Get SATA III. It only does II, but you'll have that future-proofing.

  • Reply 2 of 2
    markw10markw10 Posts: 356member

    Thanks for the advice.  I'll hit Newegg and other places and start doing some research.

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