Designed for power users to medium-sized organizations in RAID-optimized NAS systems with up to 24 bays. Perfect for archiving, sharing, and protecting rapidly growing amounts of data.
Q: What is the cache buffer size of this hard drive?
A: The cache buffer size is 512 megabytes.
Q: What is the maximum read speed of this WD hard drive?
A: The maximum read speed for this hard drive is 272 megabytes per second.
Q: What is the storage capacity of this hard drive?
A: This hard drive has a storage capacity of 18 terabytes.
Q: Why is 3D Active Balance an important feature for this hard drive?
A: 3D Active Balance technology improves drive performance and reliability and helps to reduce excessive vibration and noise that can occur in a multi-drive system.
Q: Does this hard drive have a warranty, and if so, how long is it?
A: Yes, this hard drive comes with a 5-year limited warranty.
Q: How does this hard drive handle shock events?
A: This hard drive is equipped with a multi-axis shock sensor that can detect shock events and uses dynamic fly height technology to adjust read-write functions to help protect data.

Designed for power users to medium-sized organizations in RAID-optimized NAS systems with up to 24 bays. Perfect for archiving, sharing, and protecting rapidly growing amounts of data.

Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD202KFGX

WD Red Pro drives are engineered to handle high-intensity workloads in 24×7 multi-user commercial and enterprise NAS environments. WD Red Pro drives deliver the performance, scalability and dependability businesses require to store, share and collaborate on large amounts of data in multi-bay RAID-optimized NAS systems.

WD Red Pro drives are engineered to handle high-intensity workloads in 24×7 multi-user commercial and enterprise NAS environments. WD Red Pro drives deliver the performance, scalability and dependability businesses require to store, share and collaborate on large amounts of data in multi-bay RAID-optimized NAS systems.
| Pros for WD - Red Pro 18TB NAS Internal Hard Drive | |||
|---|---|---|---|
| Reliability, Storage Space | There were no pros for this product— | There were no pros for this product— | There were no pros for this product— |
| Cons for WD - Red Pro 18TB NAS Internal Hard Drive | |||
| Noise | There were no cons for this product— | There were no cons for this product— | There were no cons for this product— |
Customers regard the Red Pro 18TB NAS Internal Hard Drive highly for its reliability and ample storage space. Users have reported that the drive functions effectively without problems. However, some customers have noted that the drive can produce some noise.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Hard drive works great. It has been running 24 hours straight since I purchased. Subtle noise, but annoying but otherwise fine.
Posted by CoffeeMoves
A little slow to spin up. A little noisy at first. Other than that, I have no other issues. Speed is good. Works great with my NAS. Tons of space. I’ve always trusted WD drives.
Posted by Bwabbit71
I have been using WD drives for over 15 years with no issues. Therefore, I was not surprised to find that this 18 TB drive is an excellent drive. However, the first drive I received was defective and could not be formatted, which caused Windows Explorer to freeze. The second drive I received was without fault and now have it running in my home NAS.
Posted by Saad