WD Red or Red Plus or WD Red Pro?

WD Red vs Red Plus?

I have just bought a DS220J and want to populate it in a RAID 1 configuration with two 2TB WD Red drives. I only want to use the NAS for local storage to serve files and to back up one or two local PCs. Would you recommend the Red or the Red Plus drive?

The most important thing is HDD writing technology. WD Red SMR drives do perform very badly in RAID5/RAID6/SHR or other RAIDs apart from RAID0/RAID1. With a 2-bay NAS these drives are either merged together or mirrored. This way it has no issues with RAID rebuild speeds. Anything above 2-3 drives will cause issues. You should then choose WD Red Plus CMR type of drives. If you go above 8 drives in your NAS, you should start worrying about vibrations. This is why WD Red Pro drives are recommended. WD Red Pro drives are also much faster thanks to 7200RPM. This makes these drives more suitable for operations like WEB/ DB server, Virtual machines and docker or video editing. Downside of the Pro drives is power consumption and mainly the noise they generate. For home environment non-pro drives will run quitter and will also hibernate when not in use.

 

Here is a list of WD Red SMR drives.

WD Introduced WD Red plus CMR drives for people to easy differentiate these two types of drives.

 

WD Red Pro drives will stand out with their IOPS and general data transfer speeds. All of these drives can be used in any NAS where speed is crucial.

 

 

 

 

There are still quite few older SMR drives around. I would recommend having a look into a table bellow before buying a drive.

 

If you have existing RAID with old 2TB/3TB/4TB/6TB EFRX CMR drives and you need a replacement drive or you want to expand your RAID with an extra drive make sure you get a right drive. You may want to get a spare drive before these old EFRX drive are not available any more.

Here are the codes for old CMR drives:

WD20EFRX – 2TB  –  Amazon  Ebay

WD30EFRX – 3TB –  Amazon  Ebay

WD40EFRX – 4TB –  Amazon  Ebay

WD60EFRX -6TB –  Amazon  Ebay

You might still get them in some places, but not for long.

 

EFRX Price/TB Price Capacity read/write Watt cache Warranty
Western Digital WD Red WD10EFRX 3.5″ SATA 6Gb/s 1TB 5400rpm £54 £54 1TB 150/ 3.3 64 3yr non-SMR (CMR)
Western Digital WD Red WD20EFRX 3.5″ SATA 6Gb/s 2TB 5400rpm £35.5 £71 2TB 147/ 4.1 64 3yr non-SMR (CMR)
Western Digital WD Red WD30EFRX 3.5″ SATA 6Gb/s 3TB 5400rpm £29.33 £88 3TB 147/ 4.1 64 3yr non-SMR (CMR)
Western Digital WD Red WD40EFRX 3.5″ SATA 6Gb/s 4TB 5400rpm £26 £104 4TB 150/ 4.5 64 3yr non-SMR (CMR)
Western Digital WD Red WD60EFRX 3.5″ SATA 6Gb/s 6TB 5400rpm £28.17 £169 6TB 175/ 5.3 64 3yr non-SMR (CMR)
EFAX – SMR Price/TB Price Capacity read/write Watt cache Warranty
Western Digital WD Red WD20EFAX 3.5″ SATA 6Gb/s 2TB 5400rpm £35.5 £71 2TB 180/ 4.1 256 3yr SMR
Western Digital WD Red WD30EFAX 3.5″ SATA 6Gb/s 3TB 5400rpm £28.33 £85 3TB 180/ 4.8 256 3yr SMR
Western Digital WD Red WD40EFAX 3.5″ SATA 6Gb/s 4TB 5400rpm £24.25 £97 4TB 180/ 4.8 256 3yr SMR
Western Digital WD Red WD60EFAX 3.5″ SATA 6Gb/s 6TB 5400rpm £28 £168 6TB 180/ 4.8 256 3yr SMR
Western Digital WD Red WD80EFAX 3.5″ SATA 6Gb/s 8TB 5400rpm £26.88 £215 8TB 210/ 8.8 256 3yr non-SMR (CMR)
Western Digital WD Red WD101EFAX 3.5″ SATA 6Gb/s 10TB 5400rpm £27 £270 10TB 210/ 5.7 256 3yr non-SMR (CMR)
Western Digital WD Red WD100EFAX 3.5″ SATA 6Gb/s 10TB 5400rpm £28.8 £288 10TB 210/ 5.7 256 3yr non-SMR (CMR)
Western Digital WD Red WD120EFAX 3.5″ SATA 6Gb/s 12TB 5400rpm £29.25 £351 12TB 196/ 6.3 256 3yr non-SMR (CMR)

 

 

List of WD CMR and SMR hard drives (HDD)

How to tell a difference between DM-SMR and non-SMR (CMR) drives (HDD) – compare

 

 


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