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| Brand | Samsung |
|---|---|
| Model | PM863a |
| Capacity | 1.92 TB |
| 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 | 1.3 |
| Total Bytes Written | 2733 TBW |
| Sequential Read | 520 MB/s |
|---|---|
| Sequential Write | 480 MB/s |
| Random Read IOPS | 97000 |
| Random Write IOPS | 24000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ7LM1T9HCJM-00005 |
|---|
Compared with the previous-generation MZ7LM1T9HCJM-00005, the Samsung PM863a MZ-7LM1T9A delivers a more endurance-optimized 1.92TB SATA platform with 1.3 DWPD, 2,733 TBW, and up to 97,000/24,000 IOPS, making it a stronger fit for read-centric enterprise workloads that still demand steady write capability. Its Samsung V-NAND 3D TLC architecture combines near-interface-limit 520/480 MB/s throughput with enterprise-class write life, giving it a clear advantage over typical SATA TLC drives in mixed virtualization, boot, and content-serving deployments.
With an endurance rating of 2733 TBW, the MZ-7LM1T9A can sustain about 750 GB of host writes per day for 10 years, which is far beyond the write volume of a typical OS, boot, or read-intensive server workload. In practical terms, for common enterprise system-disk use, this level of endurance provides long service life with substantial write headroom and low wear-related risk. Its built-in power loss protection (PLP) helps preserve in-flight data and metadata during unexpected power interruption, reducing the risk of corruption and improving operational resilience. Combined with an enterprise-class UBER of 1.0E-17 and a 2 million hour MTBF rating, it is designed to deliver very high data integrity and dependable long-term operation in business environments.
1. The SATA interface delivers broad plug-and-play compatibility with existing enterprise servers and arrays, while providing enough bandwidth to noticeably accelerate OS boot, backup restore, and large-file access without a platform overhaul.
2. Strong random-read performance keeps virtual machines, OLTP databases, and metadata-heavy applications responsive even under highly concurrent request patterns.
3. Its enterprise write endurance supports steady daily overwrite activity, making it a dependable fit for cache layers, logging, and mixed-use data center workloads.
4. Samsung V-NAND 3D TLC combines higher flash density with proven reliability, helping organizations scale capacity efficiently without sacrificing enterprise-class stability.
5. Low typical latency helps reduce tail-response time, improving transaction consistency and user experience in latency-sensitive production environments.
For MPN MZ-7LM1T9A (1.92 TB), the nearest same-series reference capacities are 960 GB as the next lower tier and 3.84 TB as the next higher tier. In this enterprise SATA class, sequential read/write and random IOPS are typically very similar across these three capacities. At 1.92 TB, this drive sits in the sweet spot of the series. Compared with the 960 GB model, it gives much better headroom for OS images, application growth, and mixed workload bursts without forcing early capacity upgrades. Compared with the 3.84 TB version, it usually delivers the most practical balance of cost, usable space, and enterprise-class performance consistency. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 general-purpose virtual machines.
Q: Is MZ-7LM1T9A suitable for a write-heavy database server?
A: Yes. With 1.3 DWPD, 2733 TBW, Samsung V-NAND 3D TLC, and 120 µs typical latency, the MZ-7LM1T9A is suitable for write-intensive database and enterprise 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. For a 1.92 TB capacity, that equals about 2.5 TB of writes daily within its endurance specification.
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 in enterprise storage environments.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is generally recommended for this SSD in performance-sensitive environments, especially databases. It provides strong read/write performance, redundancy, and faster rebuilds than parity-based RAID levels.