NCQ or NO NCQ

[kittiyut]

It's about Seagate's 1TB Baracuda 7200.11 vs. Baracuda ES.2

Both are nearly the same (ie rotation speed, cache, size) with the exception of the ES.2 being:

-Business-critical enterprise drive, designed for 24x7 operation
-Better at optimizing power consumption
-Higher MTBF (1.2 million hrs. instead of 750,000)
-Has Error control/correction
-A bit pricier (roughly 40 bucks more)
-BUT NO NCQ ?!?!
-And a few other minor technical differences

Question is, I'm getting 4 drives with the RAID card to do RAID 5
would you go with the ES.2 or the 7200.11? Does NCQ really make
that much of a difference?

 

[gazfocus]

It's about Seagate's 1TB Baracuda 7200.11 vs. Baracuda ES.2

Both are nearly the same (ie rotation speed, cache, size) with the exception of the ES.2 being:

-Business-critical enterprise drive, designed for 24x7 operation
-Better at optimizing power consumption
-Higher MTBF (1.2 million hrs. instead of 750,000)
-Has Error control/correction
-A bit pricier (roughly 40 bucks more)
-BUT NO NCQ ?!?!
-And a few other minor technical differences

Question is, I'm getting 4 drives with the RAID card to do RAID 5
would you go with the ES.2 or the 7200.11? Does NCQ really make
that much of a difference?

Sorry to sound thick but what's NCQ? Thanks

 

[OhFrenchman]

Sorry to sound thick but what's NCQ? Thanks

A technology introduced by SATA that allows for faster hard drive speeds and slightly less wear on the drive by optimizing the order in which read and write orders are processed. For more information consult the Wikipedia (http://en.wikipedia.org/wiki/NCQ)

I can't tell you whether it makes much of a difference, but if it is a new SATA drive I wonder why it doesn't support NCQ. The first question to ask is, of course: Does your RAID Adapter even have NCQ-support? Both (hard drive and controller) need it.

 

[kittiyut]

A technology introduced by SATA that allows for faster hard drive speeds and slightly less wear on the drive by optimizing the order in which read and write orders are processed. For more information consult the Wikipedia (http://en.wikipedia.org/wiki/NCQ)

I can't tell you whether it makes much of a difference, but if it is a new SATA drive I wonder why it doesn't support NCQ. The first question to ask is, of course: Does your RAID Adapter even have NCQ-support? Both (hard drive and controller) need it.

It is the Apple RAID controller, not a 3rd party so I would assume that it
does support it!