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| Brand | Samsung |
|---|---|
| Model | PM863a |
| Capacity | 480GB |
| Usage Class | Enterprise |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 1.3 |
| Total Bytes Written | 700 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-7LM4800 |
|---|
Compared with the previous-generation MZ-7LM4800, the MZ-7LM480N PM863a delivers a clear platform refresh with Samsung V-NAND 3bit MLC, 700 TBW endurance at 1.3 DWPD, and up to 97,000/24,000 random read/write IOPS for stronger sustained enterprise SATA performance. For 480GB boot, read-cache, and virtualization tiers that need predictable latency on a SATA 6Gb/s interface, it stands out by combining near–interface-limit 520/480 MB/s throughput with higher endurance efficiency than typical read-intensive SSDs in its class.
With an endurance rating of 700 TBW and 1.3 DWPD, the MZ-7LM480N is designed to handle sustained daily writes well beyond typical OS, application, and general business workloads. In practical terms, for use as a system or boot drive under normal enterprise operating conditions, this level of endurance supports many years of reliable service without write-life concerns. The drive also includes power-loss protection (PLP), which helps preserve in-flight data and protect metadata integrity during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its enterprise-class UBER of 1.0E-17, together with a 2 million hour MTBF, indicates an extremely low probability of unrecoverable bit errors and strong long-term operational reliability for business-critical deployments.
1. The SATA 6Gb/s interface, paired with strong sequential read performance, enables a drop-in upgrade for legacy enterprise servers and storage arrays while accelerating boot, backup, and large-file access workflows.
2. High random read capability supports fast response under metadata-heavy, virtualized, and read-intensive database workloads, helping more users and transactions complete without storage becoming the bottleneck.
3. A 1.3 DWPD endurance rating provides the write tolerance needed for mixed-use enterprise applications, reducing replacement frequency and improving lifecycle predictability in always-on environments.
4. Samsung V-NAND 3bit MLC (TLC) balances enterprise-class density, power efficiency, and cost, making it well suited for scaling capacity across data center deployments without sacrificing reliability.
5. The low typical latency helps deliver consistently responsive application behavior, which is especially valuable for latency-sensitive services such as OLTP, VDI, and real-time analytics.
Lower capacity reference: 240GB Higher capacity reference: 960GB In the PM863 capacity stack, the 480GB model is the sweet spot. Compared with the 240GB version, it gives much more headroom for OS growth, logs, swap, and application updates, reducing early capacity pressure in always-on enterprise environments. Compared with the 960GB option, it keeps acquisition cost and cost per node under tighter control while delivering essentially the same enterprise-class sequential throughput and random IOPS profile. It is best suited for mid-scale deployments, such as shared boot and utility storage for about 40 to 60 virtual desktop users or 12 to 20 lightweight application servers.
Q: Is MZ-7LM480N suitable for a write-heavy database server?
A: Yes. With 1.3 DWPD, 700 TBW endurance, low 100 µs typical latency, and enterprise features like PLP, the MZ-7LM480N 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: It is rated for 1.3 full drive writes per day. For a 480GB SSD, that equals about 624GB of writes daily across its specified warranty and endurance 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 sudden outages, reducing corruption risk and improving reliability in servers, RAID arrays, and databases.
Q: What RAID level is recommended for this SSD?
A: RAID 1, 10, or 5 can be used depending on priorities. For databases, RAID 10 is typically recommended, balancing strong performance, redundancy, and faster rebuild behavior than parity-heavy RAID.