Western Digital 16TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD161KFGX
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AI Verdict
This 16TB, 7200 RPM, 512 MB cache CMR drive is built for 24/7, multi-user NAS systems with unlimited bays.
This 16TB, 7200 RPM drive with 512 MB cache is purpose-built for high-intensity, 24/7 NAS environments, supporting unlimited bays and a 550TB/yr workload. Its design for multi-user, RAID-optimized systems aligns directly with demanding storage needs.
If you need even higher sustained data transfer rates for extremely intensive applications, consider an enterprise-grade SSD with a larger DRAM cache.
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Pros
- Engineered for high-intensity, 24/7 multi-user commercial and enterprise NAS environments.
- Rated for a 550TB/yr workload rate, indicating suitability for demanding use.
- Features RAID error recovery control to reduce failures within NAS systems.
- Designed to operate effectively in multi-bay NAS systems, mitigating noise and vibration.
- Offers a 5-year limited warranty, providing extended support.
- Users report consistent operation and fast speeds in NAS environments.
Cons
- Some users have reported drive failures after approximately two years of use.
- Despite being designed for NAS, some individual units have received 1-star reviews.
- Power consumption is 6.1 Watts during read/write operations, which can add up in multi-bay systems.
- While generally praised, a small percentage of reviews indicate dissatisfaction with the product.
Dimension Scores
The 7200 RPM spindle speed and 512 MB cache contribute to reported fast speeds in NAS environments, with an interface transfer rate up to 259 MB/s.
Engineered for 24/7 operation and a 550TB/yr workload rate with RAID error recovery, it's designed for high endurance, backed by a 5-year warranty, though some users report early failures.
16TB is a very high capacity for a single drive, making it suitable for large-scale data archiving and multi-bay NAS systems.
Extensively tested with a wide range of NAS system vendors, ensuring broad compatibility with most NAS enclosures.
Best For
- Medium to large-scale business NAS systems requiring high capacity.
- 24/7 multi-user environments with demanding workloads.
- RAID array rebuilding on extended operating systems like ZFS.
- Archiving and sharing large amounts of data in multi-bay systems.
Not Recommended For
- Single-drive desktop PC use where NAS-specific features are unnecessary.
- Budget-constrained personal storage where lower-cost, lower-workload drives suffice.
- Users prioritizing absolute silence, as mechanical drives inherently produce some noise.
Watch Out For
- A Reddit user reported a 16TB Red Pro failing after two years, emitting a 'click-click sound'.
- Out of 54 Micro Center reviews, 9 were 1-star, indicating a failure rate for some units.
- Some older Amazon listings incorrectly stated a 256 MB cache, causing confusion for buyers expecting the 512 MB cache.
Full Specifications
| ASIN | B08K3VVKSW |
| Brand | WD |
| Color | Red |
| Series | WD Red Pro |
| Language | English |
| Batteries | 1 AAAA batteries required. |
| Hard Drive | 16 TB Mechanical Hard Disk |
| Item Weight | 1.52 pounds |
| Manufacturer | Western Digital |
| Special Feature | Data Recovery Service |
| Flash Memory Size | 16 TB |
| Hardware Platform | PC |
| Installation Type | Internal Hard Drive |
| Item model number | WD161KFGX-SPAFPN0 |
| Compatible Devices | Desktop PC, Storage System |
| Product Dimensions | 1.03 x 5.79 x 4 inches |
| Hard Disk Interface | Serial ATA-600 |
| Hard Drive Interface | Serial ATA-600 |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Item Dimensions LxWxH | 1.03 x 5.79 x 4 inches |
| Connectivity Technology | SATA |
| Number of USB 2.0 Ports | 1 |
| Digital Storage Capacity | 16 TB |
| Hard Drive Rotational Speed | 7200 RPM |
What Buyers Say
Many users report this 16TB WD Red Pro drive works flawlessly in Synology NAS devices, handling Plex media servers without issues. While praised for consistent operation and speed in NAS environments, a small percentage of reviews indicate dissatisfaction, with some drives failing after about two years. The drive's 512 MB cache and CMR technology are key for its performance in multi-user setups.
“Man, I dropped four of these into my Synology and they just hum along, Plex is flying, but I'm always a little nervous after hearing about some early failures, hope my luck holds out.”
Common Praise
- Operates reliably in RAID 1 setups.
- Provides ample storage capacity for various data needs.
- Operates at promised speeds in NAS environments.
- Straightforward installation process and compatibility with NAS systems.
- Works perfectly in Synology NAS devices for media servers.
Common Complaints
- One user reported a drive failure after two years with a 'click-click sound'.
- A small number of reviews (9 out of 54) on one platform were 1-star.
- Some confusion existed due to incorrect cache size listings on certain retail sites.
Ownership Tips
- The drive's noise levels are generally acceptable for NAS environments, but not silent.
- Performance in RAID arrays is a frequently highlighted benefit, especially for rebuild times.
- The 5-year warranty is a significant factor for many users when considering long-term data storage.
- Despite being 'Pro,' some users still experienced failures, emphasizing the importance of backups.
Frequently Asked Questions
Is this drive suitable for a home NAS?
Yes, while designed for business, its 24/7 operation and RAID optimization make it suitable for a robust home NAS, especially for large media libraries or backups.
What is the cache size of this drive?
The WD161KFGX model has a 512 MB cache, despite some older listings showing 256 MB.
Does this drive use CMR or SMR technology?
This WD Red Pro drive uses CMR (Conventional Magnetic Recording) technology, which is preferred for NAS and RAID environments due to consistent performance.
What kind of warranty does this hard drive come with?
It comes with a 5-year limited warranty, providing long-term coverage for the drive.
Can I use this drive in a desktop PC?
Yes, you can use it in a desktop PC as long as you have a 3.5-inch bay and an available SATA port, though its features are optimized for NAS.
Buying Guide
When buying a hard drive for a NAS, you need something that can handle being on all the time and working with other drives. This isn't like a drive for your desktop PC that you turn off every night. You're looking for endurance, consistent performance, and features that prevent data loss in a multi-drive setup. Don't cheap out on drives for your critical data.
Capacity (16 TB)
This is how much data the drive can hold. Think of it like the size of your closet; 16 terabytes is a massive amount, enough for thousands of movies or millions of documents, making it ideal for long-term storage or large media libraries.
RPM (7200)
Revolutions Per Minute indicates how fast the platters spin. Higher RPMs generally mean faster data access and transfer speeds, which is crucial for a NAS that might be serving multiple users or handling large files simultaneously, like a faster car engine.
Cache (512 MB)
The cache acts like a small, super-fast buffer for frequently accessed data. A larger cache, like 512 MB, helps improve the drive's responsiveness and overall performance, especially during heavy read/write operations, similar to having a good short-term memory.
CMR (Conventional Magnetic Recording)
CMR is a recording technology where data tracks don't overlap, ensuring consistent write performance. This is vital for NAS drives, especially in RAID configurations, because it prevents performance degradation that can occur with SMR (Shingled Magnetic Recording) drives during sustained writes or rebuilds.
Alternatives
If this capacity is too much, look for drives with lower terabyte counts but similar 7200 RPM, CMR, and NAS-specific optimizations. If you need even faster access, consider SSDs designed for NAS, but be prepared for a higher cost per terabyte.
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