Has anyone used the wd red pro drives as a raid-5 for video editing? i am also looking at mobius 5-bay raid enclosure to house these drives.

I use them in a RAID enclosure where electronic backups are kept. Not video editing, but possibly similar usage pattern - large files with big IO patterns. It's what these are made for - RAID, 7.2K RPM, 5 Year warranty. Not seen a failure in ~18 months of use so far.

If i already have drives 4tb wd red (not red pro) and i purchase the red pro, am i able to use it to its full potential? or will it bottleneck?

The only difference between red and red pro is the warranty. Its the same drive for both but where the red comes with a 3 year warranty, the red pro comes with a 5 year warranty. IMO, the extra cost for the additional 2 years is well worth the investment. I would also add that Western Digital's RMA process has to be the best that I have come across.

Can this be used for 1 to 5 bay NAS systems? description says designed specifically for 8 to 16 bay NAS systems.

Yes, it would work fine in any NAS up to 16 bays. The description says says its for 8 to 16 bay NAS systems because it's designed to be used in larger NAS systems where the vibration from that many drives can destroy a drive that is not designed and built for that environment.

I bought 2 of these back in Sep 2014 for my QNAP-870 Pro. 1 is reporting bad sectors. I want to order another one for offline backup. Comments?

Are you using these drives in a mirror (RAID 1)? Is ther firmware of the drive up to date? These drives are designed for NAS use, but generally are not the ideal drive for standalone or RAID 0 implementations as they employ limited error recovery. For NAS use in non redundant arrays I would suggest SE or RE drives. Regardless, a few bad sectors is not really abnormal, however you may wish to utilize software to examine the pattern of bad sectors to see if it suggests impending failure. If the number is increasing I would RMA the drive. As for a stand alone offline drive, WD makes a very inexpensive drive limited use for archival storage and any decent drive (even WD Blue) for more frequent backup would be fine.

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🚀 Elevate your NAS game with WD Red Pro — storage that works as hard as you do!

OPTIMIZED FOR NAS - Engineered for medium to large NAS with 8-16 bays—perfect for serious setups
SPEED MEETS ENDURANCE - 7200 RPM and 64MB cache deliver blazing fast access and smooth multitasking
PEACE OF MIND WARRANTY - Backed by a 5-year limited warranty—because your data deserves the best
ROCK SOLID RELIABILITY - 3D Active Balance Plus & NASware 3.2 keep your data safe 24/7
SEAMLESS COMPATIBILITY - Tested with the most extensive NAS partner list for plug-and-play confidence

The WD Red Pro 4TB NAS Hard Drive is a high-performance 3.5-inch SATA 6 Gb/s drive spinning at 7200 RPM with a 64MB cache, designed specifically for medium to large NAS systems (8-16 bays). It features advanced reliability technologies like 3D Active Balance Plus and NASware 3.2 for error prevention and extended operation, backed by extensive compatibility testing and a 5-year warranty.

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Hard Drive	4 TB 1x4TB
Brand	Western Digital
Series	Red Pro
Item model number	WD4001FFSX
Hardware Platform	PC; Mac
Operating System	Windows 8/ 7
Item Weight	1.66 pounds
Product Dimensions	5.8 x 4 x 1 inches
Item Dimensions LxWxH	5.8 x 4 x 1 inches
Color	Red
Computer Memory Type	DDR2 SDRAM
Flash Memory Size	4
Hard Drive Interface	Serial ATA-600
Hard Drive Rotational Speed	7200 RPM
Manufacturer	Western Digital
ASIN	B00LO3KRM8
Is Discontinued By Manufacturer	No
Date First Available	July 21, 2014

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

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