![WD Red SA500 4TB 2.5" SATA NAS SSD [WDS400T2R0A]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F712jS0PjAdL._AC_SX679_.jpg&w=640&q=75)
WD Red SA500 4TB 2.5" SATA NAS SSD [WDS400T2R0A]
Storage optimized for caching in NAS systems to rapidly access your most frequently used files. Superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24/7 environment. Purpose-built for NAS with proven Western Digital 3D NAND to deliver maximum SATA performance to both home and business users. Reduces latency and improves responsiveness for OLTP databases, multi-user environments, photo rendering, 4K and 8K video editing, and more. Available in 2.5” and M.2 form factors to fit the slots in modern NAS systems.
Storage optimized for caching in NAS systems to rapidly access your most frequently used files. Superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24/7 environment. Purpose-built for NAS with proven Western Digital 3D NAND to deliver maximum SATA performance to both home and business users. Reduces latency and improves responsiveness for OLTP databases, multi-user environments, photo rendering, 4K and 8K video editing, and more. Available in 2.5” and M.2 form factors to fit the slots in modern NAS systems.
Storage optimized for caching in NAS systems to rapidly access your most frequently used files. Superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24/7 environment. Purpose-built for NAS with proven Western Digital 3D NAND to deliver maximum SATA performance to both home and business users. Reduces latency and improves responsiveness for OLTP databases, multi-user environments, photo rendering, 4K and 8K video editing, and more. Available in 2.5” and M.2 form factors to fit the slots in modern NAS systems.
Storage optimized for caching in NAS systems to rapidly access your most frequently used files. Superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24/7 environment. Purpose-built for NAS with proven Western Digital 3D NAND to deliver maximum SATA performance to both home and business users. Reduces latency and improves responsiveness for OLTP databases, multi-user environments, photo rendering, 4K and 8K video editing, and more. Available in 2.5” and M.2 form factors to fit the slots in modern NAS systems.
in 5 offers
The lowest price for WD Red SA500 4TB 2.5" SATA NAS SSD [WDS400T2R0A] right now is $762.65 at Amazon.com.au, compared across 5 retailers.
The all-time low was $299.42 on 4 June 2026 — today's price is 155% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 8 June 2026.
Last updated at 08/06/2026 03:14:53
Western Digital 4TB WD Red SA500 NAS 3D NAND Internal SSD Solid State Drive - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T2R0A
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
WD WUSTVA119BSS204 / 0B42569 1.92TB Solid State Drive
Free delivery between Tue – Sat
Sandisk Western Digital Red WDS400T2R0A internal solid state drive 2.5" 4 TB Serial ATA III 3D NAND
Free delivery
Western Digital 4TB WD Red SA500 NAS 3D NAND Internal SSD Solid State Drive - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T2R0A
Delivery between 12–16 June $15.52
Western Digital 4TB WD Red SA500 NAS 3D NAND Internal SSD Solid State Drive - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T2R0A
Delivery $63.32
originally posted on homeessentialsdirect.com
**Update** After receiving a suspect drive, Home Essentials Direct replaced it with a new drive that has been working well in a home security system. file transfer and video scrubbing moves much faster. I purchased the 4TB Western Digital Red SA500 SSD for a security system install. Once installed, it was buggy and would not write any data. I unplugged it and plugged it into a Linux box to check the partitions. Low and behold, it said it only had 1.64TB available. Be careful with this one.
originally posted on homeessentialsdirect.com
Answering the unanswered as there are so many forums where this question remains open. I can confirm that the WD RED SSD NAS 1TB (using a 2.5" to 3.5" cheapo chunky-style adapter) totally works in both the MyCloud EX2 and MyCloud EX2 Ultra dual-bay NAS devices. I tried JBOD, Spanning, RAID0, RAID1 and all are functioning as expected depending on your configuration choice. For my final configuration, I am personally using two WD RED SSD NAS 1TB in RAID0 for added performance and then use rotating USB HDD backups for any potential failure/recoveries that might happen. As an aside, I experimented with other brands of SSD without success. If you really want SSDs in your MyCloud EX2 or EX2 Ultra, then I'd recommend you get the official WD RED SSD NAS drives as they are ... MoreAnswering the unanswered as there are so many forums where this question remains open. I can confirm that the WD RED SSD NAS 1TB (using a 2.5" to 3.5" cheapo chunky-style adapter) totally works in both the MyCloud EX2 and MyCloud EX2 Ultra dual-bay NAS devices. I tried JBOD, Spanning, RAID0, RAID1 and all are functioning as expected depending on your configuration choice. For my final configuration, I am personally using two WD RED SSD NAS 1TB in RAID0 for added performance and then use rotating USB HDD backups for any potential failure/recoveries that might happen. As an aside, I experimented with other brands of SSD without success. If you really want SSDs in your MyCloud EX2 or EX2 Ultra, then I'd recommend you get the official WD RED SSD NAS drives as they are the only SSDs I personally found to work.
originally posted on galaxus.ch
The WD Red SSD product line is awesome. The price is good, a bit more expensive than the Blue line. But this is because of a higher TBW warranty level and therefore promises a longer durability. I've been using more than a douzen of these SSDs in production for several years and - so far - never had an issue. Nevertheless it is advised to replace a SSD when reaching the guaranteed TBW levels.
| Digital storage capacity | 4 TB |
| Hard disk interface | SATA 6 GB/s |
| Connectivity technology | SATA |
| Special feature | NAS |
| Hard disk form factor | 2.5 Inches |
Western Digital 4TB WD Red SA500 NAS 3D NAND Internal SSD Solid State Drive - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T2R0A
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
WD WUSTVA119BSS204 / 0B42569 1.92TB Solid State Drive
Free delivery between Tue – Sat
Sandisk Western Digital Red WDS400T2R0A internal solid state drive 2.5" 4 TB Serial ATA III 3D NAND
Free delivery
Western Digital 4TB WD Red SA500 NAS 3D NAND Internal SSD Solid State Drive - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T2R0A
Delivery between 12–16 June $15.52
Western Digital 4TB WD Red SA500 NAS 3D NAND Internal SSD Solid State Drive - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T2R0A
Delivery $63.32
**Update** After receiving a suspect drive, Home Essentials Direct replaced it with a new drive that has been working well in a home security system. file transfer and video scrubbing moves much faster. I purchased the 4TB Western Digital Red SA500 SSD for a security system install. Once installed, it was buggy and would not write any data. I unplugged it and plugged it into a Linux box to check the partitions. Low and behold, it said it only had 1.64TB available. Be careful with this one.
Answering the unanswered as there are so many forums where this question remains open. I can confirm that the WD RED SSD NAS 1TB (using a 2.5" to 3.5" cheapo chunky-style adapter) totally works in both the MyCloud EX2 and MyCloud EX2 Ultra dual-bay NAS devices. I tried JBOD, Spanning, RAID0, RAID1 and all are functioning as expected depending on your configuration choice. For my final configuration, I am personally using two WD RED SSD NAS 1TB in RAID0 for added performance and then use rotating USB HDD backups for any potential failure/recoveries that might happen. As an aside, I experimented with other brands of SSD without success. If you really want SSDs in your MyCloud EX2 or EX2 Ultra, then I'd recommend you get the official WD RED SSD NAS drives as they are ... MoreAnswering the unanswered as there are so many forums where this question remains open. I can confirm that the WD RED SSD NAS 1TB (using a 2.5" to 3.5" cheapo chunky-style adapter) totally works in both the MyCloud EX2 and MyCloud EX2 Ultra dual-bay NAS devices. I tried JBOD, Spanning, RAID0, RAID1 and all are functioning as expected depending on your configuration choice. For my final configuration, I am personally using two WD RED SSD NAS 1TB in RAID0 for added performance and then use rotating USB HDD backups for any potential failure/recoveries that might happen. As an aside, I experimented with other brands of SSD without success. If you really want SSDs in your MyCloud EX2 or EX2 Ultra, then I'd recommend you get the official WD RED SSD NAS drives as they are the only SSDs I personally found to work.
The WD Red SSD product line is awesome. The price is good, a bit more expensive than the Blue line. But this is because of a higher TBW warranty level and therefore promises a longer durability. I've been using more than a douzen of these SSDs in production for several years and - so far - never had an issue. Nevertheless it is advised to replace a SSD when reaching the guaranteed TBW levels.
I'm using a number of WD Red SA500 4TB NAS drives in a ZFS pool consisting of 6 mirrored vdevs. Overall pool performance is great, though average single disk write speed observed during two resilvering operations is only around 200 MB/s. (I've never seen it go above 380 MB/s.) It's not clear to me whether that's the sustained write speed of this drive or if there's a bottleneck (or deliberate throttling) elsewhere. As mentioned in the headline, it's still early days - the pool has only been in operation for a few months. Within the last few days ZFS started showing checksum errors for one of the Samsung EVO 860s that are also in the pool. I replaced it with an SA500. I'll try to remember to update this review over time to note how the SA500s are faring. Update - ... MoreI'm using a number of WD Red SA500 4TB NAS drives in a ZFS pool consisting of 6 mirrored vdevs. Overall pool performance is great, though average single disk write speed observed during two resilvering operations is only around 200 MB/s. (I've never seen it go above 380 MB/s.) It's not clear to me whether that's the sustained write speed of this drive or if there's a bottleneck (or deliberate throttling) elsewhere. As mentioned in the headline, it's still early days - the pool has only been in operation for a few months. Within the last few days ZFS started showing checksum errors for one of the Samsung EVO 860s that are also in the pool. I replaced it with an SA500. I'll try to remember to update this review over time to note how the SA500s are faring. Update - 2020-09-17: I now have eight of these SSDs. No problems so far.
I recently purchased a Synology DS920+ and was intrigued by the prospects of being able to install an M.2 2280 SSD for a pool of fast cache on the device. This particular drive is in the list of “recommended accessories” on the B&H product listing for the DS920+, so I figured “great, I suppose I’ll get that one.” Turns out j should’ve done my research a bit better, because the DS920+ only supports the NVMe protocol for the M.2 2280 form factor, not the SATA protocol of this particular drive. So buyer beware if your purchasing this particular SSD for use in the DS920+, because despite its inclusion as an idea accessory it is not in fact supported.
As often happens, I found that my laptop's 500gb system drive was reaching full capacity, with all the attendant problems of update failures, and general warnings. I bought this slightly higher spec WD drive with twice the capacity, intending to clone the existing internal drive. I mounted this new drive in the external housing I bought at the same time, and pressed into action with the free software I had downloaded from PCPRO magazine, issue 349, October 2023. You could have knocked me down with a feather when the whole process stopped after only 12 minutes, showing all the correct folders and files in File Explorer. I swapped the drives (an easy task with the accessible drive bay on my laptop), and with the first boot I got a 100% success rate. All the system ... MoreAs often happens, I found that my laptop's 500gb system drive was reaching full capacity, with all the attendant problems of update failures, and general warnings. I bought this slightly higher spec WD drive with twice the capacity, intending to clone the existing internal drive. I mounted this new drive in the external housing I bought at the same time, and pressed into action with the free software I had downloaded from PCPRO magazine, issue 349, October 2023. You could have knocked me down with a feather when the whole process stopped after only 12 minutes, showing all the correct folders and files in File Explorer. I swapped the drives (an easy task with the accessible drive bay on my laptop), and with the first boot I got a 100% success rate. All the system access was complete, and the whole thing worked seamlessly. I was back up and running within 30 minutes. It was extraordinary. I expected an evening's work, followed by password problems, but no! - it was a complete success. I couldn't be happier. All SSDs are fast, but this one, inexpensive as it is, has performed brilliantly.
I purchased this to replace a failing Seagate FireCuda ST2000LX001-1RG174 within a RAID array.For me the most important point was an exact or bigger match on the drive capacity. A smaller capacity, even by only a few MB would have meant that the drive would be unusable for it's intended purpose. Switching to a SSD to improve performance was the other factor.I purchased the 2TB SATA 2.5" form factor (in case this review somehow shows beside other form factors).The raid array sits on a hypervisor running multiple KVM VM's. For those like me who appreciate how your system will see the drive. below are appropriate snippets from my kernel's boot log.The details for this drive (on a Linux 4.9.0 kernel)ata6.00: ATA-11: WDC WDS200T1R0A-68A4W0, 411000WR, max ... MoreI purchased this to replace a failing Seagate FireCuda ST2000LX001-1RG174 within a RAID array.For me the most important point was an exact or bigger match on the drive capacity. A smaller capacity, even by only a few MB would have meant that the drive would be unusable for it's intended purpose. Switching to a SSD to improve performance was the other factor.I purchased the 2TB SATA 2.5" form factor (in case this review somehow shows beside other form factors).The raid array sits on a hypervisor running multiple KVM VM's. For those like me who appreciate how your system will see the drive. below are appropriate snippets from my kernel's boot log.The details for this drive (on a Linux 4.9.0 kernel)ata6.00: ATA-11: WDC WDS200T1R0A-68A4W0, 411000WR, max UDMA/133ata6.00: 3907029168 sectors, multi 1: LBA48 NCQ (depth 31/32), AAata6.00: configured for UDMA/133scsi 5:0:0:0: Direct-Access ATA WDC WDS200T1R0A 00WR PQ: 0 ANSI: 5sd 5:0:0:0: [sdd] 3907029168 512-byte logical blocks: (2.00 TB/1.82 TiB)sd 5:0:0:0: [sdd] Write Protect is offsd 5:0:0:0: [sdd] Mode Sense: 00 3a 00 00sd 5:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUAThe drive was a drop in replacement from the Linux kernel / old array. Old drive (it was replacing) details :ata3.00: ATA-10: ST2000LX001-1RG174, SDM1, max UDMA/133ata3.00: 3907029168 sectors, multi 16: LBA48 NCQ (depth 31/32), AA
These were purchased as additional storage drives for a TrueNAS Core system. I have gone all SSD as I don't need masses of space and the fact that the drives are silent as well as faster is more important. They were detected by the system with no issue at all. The following commanddd if=/dev/zero of=benchfile bs=4k count=250000 && sync; rm benchfilewhen run inside a VM gives the following output1024000000 bytes (1.0 GB, 977 MiB) copied, 6.62751 s, 155 MB/s
I have gone all SSD in my TrueNAS Core system as silent operation and speed are more important than capacity. Drives were detected with no issue at all. When I run the following command on the TrueNAS Core shell.dd if=/dev/zero of=benchfile bs=4k count=250000 && sync; rm benchfileI get the following result.1024000000 bytes transferred in 5.568465 secs, (183892681 bytes/sec)I know you can get NAS SSDs with a better set of specifications but they can be quite a bit more expensive, so for my use case these seemed like a good middle ground.
5 year warranty and priced a bit more than comparable drives by "Brand C" (what I was planning to use). Performance is more than adequate for my needs. No apparent "major issues" with these drives that I could find, unlike the "Brand C" drives. I bought a pair of these SSD for a Raid-1 setup to use in a home system that runs 24x7 and needs to reliably run 24x7 with this Raid-1 storage array (mostly used to read data, not write it). I had a very short list of choices: "Brand S", "Brand C", "Brand I", and WDC. I have used SSD from all 4 of those manufacturers over the past decade or more. I decided on this SSD because it claims to be specifically designed for use in a NAS, and I presume that implies RAID setup, so I am hoping that is not a bunch of "marketing speak". ... More5 year warranty and priced a bit more than comparable drives by "Brand C" (what I was planning to use). Performance is more than adequate for my needs. No apparent "major issues" with these drives that I could find, unlike the "Brand C" drives. I bought a pair of these SSD for a Raid-1 setup to use in a home system that runs 24x7 and needs to reliably run 24x7 with this Raid-1 storage array (mostly used to read data, not write it). I had a very short list of choices: "Brand S", "Brand C", "Brand I", and WDC. I have used SSD from all 4 of those manufacturers over the past decade or more. I decided on this SSD because it claims to be specifically designed for use in a NAS, and I presume that implies RAID setup, so I am hoping that is not a bunch of "marketing speak". I would consider buying these again if the price was "a bit more competitive".
| Digital storage capacity | 4 TB |
| Hard disk interface | SATA 6 GB/s |
| Connectivity technology | SATA |
| Special feature | NAS |
| Hard disk form factor | 2.5 Inches |
![[WDS500G1R0A] WD 500GB Red SA500 2.5" SATA NAS SSD for 24/7 Environment](/_next/image?url=%2Fimages%2F-wds500g1r0a-wd-500gb-red-sa500-2-5-sata-nas-ssd-for-24-7-environment.webp&w=640&q=75)