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| Brand | Samsung |
|---|---|
| Model | PM863 |
| Capacity | 240 GB |
| Usage Class | Read Intensive |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3D TLC |
|---|---|
| Drive Writes Per Day | 1.5 |
| Total Bytes Written | 350 TBW |
| Sequential Read | 520 MB/s |
|---|---|
| Sequential Write | 245 MB/s |
| Random Read IOPS | 99000 |
| Random Write IOPS | 10000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ7LM240HCGR-00005 |
|---|
Compared with the previous-generation MZ7LM240HCGR-00005, the MZ-7LM240B PM863 advances to Samsung V-NAND 3D TLC and delivers a more endurance-focused enterprise SATA profile, with 1.5 DWPD and 350 TBW in a 240 GB form factor for stronger write sustainability and service-life predictability. With 520/245 MB/s sequential performance and up to 99,000/10,000 random IOPS, it is a better fit than typical read-centric SATA SSDs for mixed-read server boot, caching, and scale-out infrastructure workloads that need consistent latency plus higher write tolerance.
With an endurance rating of 350 TBW and 1.5 DWPD, the MZ-7LM240B is built to handle consistent daily write activity well beyond typical client or light server system-disk workloads. In practical terms, for OS, application, boot, and log-drive usage, this level of endurance provides long service life and can comfortably support many years of normal operation, including around a decade in typical system-drive scenarios with moderate write volumes. For enterprise reliability, the drive includes power loss protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is suddenly interrupted. Its UBER of 1.0E-17 and 2 million-hour MTBF indicate a very low probability of uncorrectable bit errors and strong long-term dependability, giving procurement teams added confidence for business-critical deployments.
1. The SATA 6Gb/s interface, paired with strong sequential read performance, gives this drive a drop-in upgrade path for legacy enterprise servers while accelerating OS boot, image rollout, and large file retrieval without requiring a platform change.
2. Up to 99,000 random read IOPS enables faster response for read-heavy virtualized workloads such as VDI, metadata access, and frequently queried databases during peak concurrency.
3. A 1.5 DWPD endurance rating supports sustained daily rewrite activity, making the SSD a practical fit for mixed-use enterprise applications that demand predictable lifespan under continuous operation.
4. Samsung V-NAND 3D TLC improves capacity efficiency and power characteristics while delivering the consistency and reliability enterprises expect for always-on data center deployments.
5. With a typical latency of 120 µs, the drive helps reduce storage wait time and improves application responsiveness in transactional systems where stable QoS matters as much as raw throughput.
Lower capacity: 120 GB Higher capacity: 480 GB In this series, the 240 GB model sits at the practical sweet spot. Compared with the 120 GB version, it gives much better headroom for OS images, logs, metadata, and application growth, reducing the risk of early capacity pressure. Compared with the 480 GB option, it preserves nearly the same enterprise SATA performance profile while delivering a more attractive cost-per-node for broader rollout. This makes 240 GB especially suitable for medium-scale deployments, such as hosting boot volumes for around 40 to 60 virtualization hosts or edge application nodes.
Q: Is MZ-7LM240B suitable for a write-heavy database server?
A: Yes, it is suitable for moderately write-heavy database workloads. With 1.5 DWPD, 350 TBW, low 120 µs typical latency, and Samsung V-NAND 3D TLC, it offers solid enterprise endurance.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 1.5 drive writes per day, meaning the full 240 GB capacity can be written about 1.5 times daily throughout its defined warranty endurance period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP is critical because it helps preserve in-flight data and metadata during sudden outages, reducing corruption risk and improving storage reliability.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 1 is common for OS or boot redundancy, while RAID 10 is preferred for databases needing both strong performance and fault tolerance.