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| Brand | Samsung |
|---|---|
| Model | 840 EVO |
| Capacity | 500 GB |
| Usage Class | Client |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung 19nm TLC |
|---|---|
| Drive Writes Per Day | 0.3 |
| Total Bytes Written | 150 TBW |
| Sequential Read | 540 MB/s |
|---|---|
| Sequential Write | 520 MB/s |
| Random Read IOPS | 98000 |
| Random Write IOPS | 9000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-7TD500BW |
|---|
The Samsung 840 EVO 500GB (MZ-7TE500BW) is a strong SATA 6Gb/s client SSD choice for read-heavy desktops and notebooks, combining near-interface-limit 540/520 MB/s sequential performance with 98,000 IOPS random read capability and 150 TBW endurance in a cost-efficient 19nm TLC design. Compared with the earlier MZ-7TD500BW, the MZ-7TE500BW delivers a clear generational step up in SATA-saturating throughput and client-side responsiveness, making it the better fit for faster boot, application launch, and everyday multitasking workloads.
With an endurance rating of 150 TBW and 0.3 DWPD, the MZ-7TE500BW is well suited for typical client and light business workloads such as OS, office applications, web access, and general data storage. In practical terms, this level of endurance is usually more than sufficient for a system drive over many years of normal use, and for many standard desktop deployments it can comfortably support a long service life of around 10 years under moderate daily writes. From a reliability perspective, the drive is rated at 1.5 million hours MTBF and an UBER of 1.0E-15, meaning the expected unrecoverable bit error rate is very low and consistent with dependable day-to-day operation. It does not include power loss protection, so it is best deployed in systems with stable power or upstream protection such as a UPS, while its overall reliability profile remains suitable for non-mission-critical and read-focused business applications.
1. The SATA 6Gb/s interface pairs with 540 MB/s sequential read performance to accelerate OS boot, VM image loading, and large-file retrieval in legacy enterprise servers without requiring a platform upgrade.
2. With 98,000K IOPS random read capability, this drive can sustain fast access to small-block data, helping databases, VDI pools, and read-heavy application servers respond more consistently under concurrency.
3. Rated at 0.3 DWPD, it is best aligned with read-centric enterprise workloads where predictable cost, adequate endurance, and long-term service stability matter more than intensive daily overwriting.
4. Samsung 19nm TLC NAND enables higher storage density and better acquisition economics, making it a practical fit for scale-out deployments focused on capacity-efficient read performance.
5. A typical latency of 100 µs helps reduce storage wait time at the transaction layer, improving application responsiveness for latency-sensitive business services.
Lower capacity reference: 250 GB Higher capacity reference: 750 GB In the MZ-7TE series, the 500 GB model sits at the practical sweet spot. Compared with the 250 GB version, it gives much better headroom for OS images, application stacks, patch growth, and working data, reducing the risk of early capacity pressure. Compared with the 750 GB option, it preserves nearly the same everyday SATA SSD performance while keeping acquisition cost and fleet standardization more manageable. This makes 500 GB especially well suited for mid-scale virtualization clusters, such as shared boot and utility storage for roughly 40 to 60 light infrastructure workloads.
Q: Is MZ-7TE500BW suitable for a write-heavy database server?
A: No. This 500GB SATA SSD is rated at 0.3 DWPD and 150 TBW, with TLC NAND and no PLP, so it is better suited for read-focused or light mixed workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: It is rated for 0.3 full drive writes per day. For a 500GB model, that equals about 150GB of writes daily on average, up to the specified 150 TBW limit.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it does not include PLP. This matters because sudden power loss can leave in-flight data or metadata unwritten, increasing the risk of corruption in database and transactional environments.
Q: What RAID level is recommended for this SSD?
A: RAID 1 or RAID 10 is generally recommended, especially for business data. These levels provide redundancy with lower write penalty, while RAID 5/6 can add extra write overhead.