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| Brand | Samsung |
|---|---|
| Model | PM863a |
| Capacity | 1.92 TB |
| Usage Class | Read Intensive |
| Host Interface | SATA 6.0 Gbps |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5" |
|---|
| NAND Flash | Samsung V-NAND 3-bit TLC |
|---|---|
| Drive Writes Per Day | 1.3 |
| Total Bytes Written | 2741 TBW |
| Sequential Read | 520 MB/s |
|---|---|
| Sequential Write | 480 MB/s |
| Random Read IOPS | 97000 |
| Random Write IOPS | 24000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-V9P1T0BW |
|---|
Compared with MZ-V9P1T0BW, the Samsung PM863a (MZ-7LM1T9N) delivers over 3.1× the capacity and roughly 4.6× the endurance at 2741 TBW, giving storage architects a materially stronger platform for sustained 24/7 deployment. Its combination of 1.3 DWPD, Samsung V-NAND 3-bit TLC, and mature SATA 6.0 Gbps performance up to 520/480 MB/s with 97K/24K IOPS makes it a better choice for read-centric virtualization, boot, and content-serving tiers that prioritize lifecycle stability and fleet compatibility over peak PCIe bandwidth.
With an endurance rating of 2741 TBW and 1.3 DWPD, the MZ-7LM1T9N is designed to handle sustained enterprise write activity over its service life, far beyond the needs of typical OS, boot, and mixed business application workloads. In practical terms, for common system-disk usage or read-heavy server deployments, this level of endurance supports many years of stable operation with ample write margin, giving procurement teams confidence in long-term durability. For enterprise reliability, the drive includes power-loss protection (PLP), which helps preserve data in flight and protects metadata integrity if power is interrupted unexpectedly. Its UBER rating of 1.0E-17, combined with a 2 million hour MTBF, reflects a very low probability of unrecoverable bit errors and strong overall dependability for business-critical environments.
1. The SATA 6.0 Gbps interface makes this drive a drop-in upgrade for mainstream enterprise servers and storage arrays, enabling cost-efficient refreshes without changing existing backplanes or controllers.
2. Its 520 MB/s sequential read performance helps accelerate large-file access, OS boot, and backup/restore workflows in read-heavy business environments.
3. With 97,000 K IOPS random read capability, the SSD can sustain fast response under highly fragmented access patterns such as virtual desktops, metadata lookups, and transactional databases.
4. Rated at 1.3 DWPD, it is built to handle steady daily rewrite activity over its service life, making it suitable for mixed-use enterprise workloads rather than light archival duty.
5. Samsung V-NAND 3-bit TLC paired with a typical 100 µs latency delivers a practical balance of density, efficiency, and predictable responsiveness for scale-out data center deployments.
Reference capacities in the same series for MPN MZ-7LM1T9N (1.92 TB): Lower capacity: 960 GB Higher capacity: 3.84 TB Typical performance positioning within the series: 960 GB: sequential read/write and random IOPS are generally close to the 1.92 TB model under normal enterprise SATA SSD behavior 1.92 TB: balanced mainstream enterprise tier 3.84 TB: similar headline read/write and IOPS, with capacity scaling being the main differentiator Capacity positioning analysis: In this series, 1.92 TB is the sweet-spot capacity. Compared with 960 GB, it provides much better space headroom for OS images, logs, patch growth, and moderate application data, reducing the risk of early capacity pressure. Compared with 3.84 TB, it delivers a more attractive cost-to-capacity balance while keeping broadly similar enterprise performance characteristics. This makes it ideal for mid-scale deployments, such as hosting boot and utility volumes for about 40 to 60 general-purpose virtual machines or a compact mixed-workload application cluster.
Q: Is MZ-7LM1T9N suitable for a write-heavy database server?
A: Yes. With 1.3 DWPD, 2741 TBW endurance, low 100 µs typical latency, and enterprise Samsung V-NAND TLC, the MZ-7LM1T9N is suitable for moderately write-heavy database server workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 1.3 full drive writes per day. Based on its 1.92 TB capacity, that equals about 2.5 TB of writes daily across the warranty period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP helps preserve in-flight data and metadata during unexpected outages, reducing corruption risk and improving reliability for databases, virtualization, and RAID environments.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for this SSD in performance-sensitive servers, offering strong read/write performance and redundancy. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered.