Question 1

Hi,

Would this work for a Server that runs 24/7, and is it compatible with Windows 8.1?

Accepted Answer

Eddie,

This drive will work with Windows 8.1 as will almost any new hard drive.  However, this drive is intended to put in a "Network Attached Storage" device known as a NAS.  Usually it is grouped with like 2 or 4 of them together and they work in a tandem sort of environment.  Unfortunately however, these "Red" series from Western Digital have been plagued  with failure problems.  If you read people reviews on Newegg, you'll quickly see what I'm talking about.  My recommendation would be spend a little more and purchase a Western Digital Black: WD4003FZEX (I own tons of these - they work great!)
OR Western Digital's RE which is an Enterprise Drive: WD4000FYYZ

Let me know if I have any additional questions - the Black has a "code" for additional savings when you add it to your cart!

Question 2

Will this work in a Drobo FS raid my son set up for me?

Accepted Answer

From the Drobo Web Site..The Answer is Yes.
I highly recommend the Premium WD drives. I use 16 of these drives in 3 QNAP Raid 5 NAS servers.

Drives and Expansion- info from Drobo website

Up to four (4) 3.5? SATA II/III hard disk drives (sold separately).
Drives of any manufacturer, capacity, spindle speed, and/or cache can be used. No carriers or tools required. Click here for drive recommendations.
Expandable by adding drives or hot-swapping drives with larger ones. Use the Capacity Calculator to estimate available storage in various configurations.
Go to the Drobo web site for additional information.

Question 3

with this being a red pro would i have difficulties backing up 3 disks on it insted of the 8 to 16?

Accepted Answer

Charles,
The spec is telling you this WD Red is designed to go into a 8-16 Bay NAS.
You can use it as a 2nd back up drive, which is what it sounds like you are doing.
You can back up as many drives as you like to it, just as long as you do not exceed the capcacity of the drive.
You should not have any issues with this steller drive!

Question 4

Can the WD Red Pro 4TB NAS Hard Drive be used in a 2 bay NAS RAID configured setup?

Accepted Answer

Yes I have (2) of these drives running under RAID 1 in my QNAP TS-269L. Great drive and the 5 year warranty gives me some piece of mind.

Question 5

does the wd red 4tb hdd come with 128 mb cache???????

Accepted Answer

Robert they do not make a 128MB Cache. I purchased 8 of these on August 6, 2014 and they are still up and running great in my raid.

Question 6

Does this work with the Drobo 5N?

Accepted Answer

You should check Drobo's website for support Hard Drives. I am currently using it with a QNAP TS0870. It is a supported HD for the NAS per QNAP's documentation.

Brand	WD
Series	Red Pro
Model	WD4001FFSX
Packaging	Bare Drive

Interface	SATA 6.0Gb/s
Capacity	4TB
RPM	7200 RPM
Cache	64MB

Features	Storage for 1 to 16 bay NAS solutions - Joining the original color of NAS, WD Red Pro adds support for medium and large 1-16 bay NAS business storage systems. WD Red Pro hard drives integrate WDs exclusive technology, NASware 3.0, to provide unparalleled support for drive compatibility, reliability, and performance. Exclusive NASware 3.0 technology - Our exclusive advanced firmware technology built into every WD Red Pro drive, NASware 3.0 enables seamless integration, robust data protection and optimal performance for systems operating in the demanding NAS environment. Error Recovery Prevention - Built specifically for RAID and NAS environments, WD Red Pro drives come equipped with error recovery controls as part of NASware 3.0, which prevents the drive from fallout in RAID applications. Vibration Protection - In combination with 3D Active Balance Plus, WD Red Pro also features hardware vibration compensation technology which monitors the drive to correct both linear and rotational vibration in real time, further increasing drive reliability.
Usage	For NAS systems

Form Factor	3.5"
Height (maximum)	26.10mm
Width (maximum)	101.60mm
Length (maximum)	147.00mm

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WD Red Pro 4TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD4001FFSX

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