HDDs Western Digital  / WD Red versus Blue

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Most Valuable Expert 2013
Yes you can use Red in a desktop - unless you pick the pro model they are actually quieter.  Blues are WD's budget drives - you still get a waranty but it's less.  Reds are built for constant use.


& yes I think it's worth paying the difference if it's a critical machine.
RaminTechnical Advisor
You can use them only in Desktops, I prefer WD RED - 3TB NAS HDD with an access time of 2ms.
But to use an HDD over 2.2 TB to boot your system from, your Mainboard must have a feature called UEFI Support.
otherwise you can use it as secondary drive.


Ramin - Thanks for the UEFI Tip - an additional thing to check  ........
Brian BEE Topic Advisor, Independant Technology Professional
In terms of being worth the cost, the biggest measure that I have found is Mean Time Between Failures (MBTF). This is the average running lifespan of the drive. WD lists the MBTF on the 3TB red drive as 1,000,000 hours. I can't find the official stat on the blue drive, but I read it is 750,000 hours. So there's you price difference right there. 25% more life on average. However keep in mind that the red drive are also designed to be on all the time. If you run a blue drive constantly you may shorten its life span.
Top Expert 2010
Yes, you can use them, but they still aren't enterprise class.  The dirty secret about the RED NAS drives is that they are designed for 24x7x365 but extremely light duty.  NAS drives will never get pounded with short bursts of high I/O like desktop drives will.

In grand scheme of things those drives aren't designed for longterm reliable use in a desktop.   Only enterprise class drives are.

Even then, 100% disks fail.   They don't put a million spare blocks on these drives for nothing.  (Yes, consider a single block failure is still going to nuke a file.  If block 0 drives, you can pretty much write off using that disk w/o paying somebody to do some disaster recovery)

So what to do .. get something cheap with a decent warranty and buy them in pairs .. and mirror (RAID1) them.    If budget simply won't allow, then get the cheapest one you can find and invest in something to backup to.
Dr. KlahnPrincipal Software Engineer


dlethe spoke wisdom when he said:

Even then, 100% disks fail.   They don't put a million spare blocks on these drives for nothing.

Amen!  Many seem to think that automatic bad block replacement means that a victim file with a replaced block is intact after the failure.  It's not.  It should be called something else, because "replacement" implies repair and life going on as normal.

When ECC fails, the bad block is flagged unusable and its position is taken by a fresh block from the spare pool, but the data in the original block is still gone.  And with vertical recording and shingled recording (used by all modern drives) the probability of a bad block increases.
Top Expert 2013

look if you find any 7200 RPM drive - to get some speed - that's my advice
and keep a backup at all times!
Natty GregIn Theory (IT)

The points in sum--- nothing last forever so there must be a backup for your backup---- I run a home file server ---love to serve my files up over home network work especially when having parties to impress the friends--- however mother told me never to put all my eggs in one basket so I have a TB drive that I manually Plug in to run a backup of the fileserver ---- when finished I plug it out and put it back into the vault---safe from wannacry or disk failure.. Ps its powered on once a month

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