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| Brand | Samsung |
|---|---|
| Model | PM863 |
| Capacity | 960 GB |
| 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 32-layer 3D TLC |
|---|---|
| Drive Writes Per Day | 1.3 |
| Total Bytes Written | 1400 TBW |
| Sequential Read | 540 MB/s |
|---|---|
| Sequential Write | 475 MB/s |
| Random Read IOPS | 99000 |
| Random Write IOPS | 18000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-7LM3T8N |
|---|
Compared with the earlier MZ-7LM3T8N, the MZ-7L3960B PM863 advances to Samsung 32-layer 3D TLC V-NAND, delivering a newer-generation enterprise SATA design with a stronger cost-per-GB profile while still sustaining 1.3 DWPD, 1,400 TBW, and up to 540/475 MB/s. Its distinctive value in the SATA tier is combining near-interface-limit sequential throughput with 99,000/18,000 IOPS endurance-backed consistency, making it a particularly strong fit for read-intensive virtualization, scale-out storage, and content-serving nodes that need predictable enterprise reliability at 960 GB.
With an endurance rating of 1400 TBW and 1.3 DWPD, the MZ-7L3960B is built to handle sustained daily writing far beyond typical OS, office, and general application workloads. In practical terms, for use as a system or boot drive, this level of endurance supports many years of stable operation with ample write margin for normal enterprise use. Its enterprise-grade reliability is reinforced by power loss protection (PLP), which helps preserve in-flight data and metadata during an unexpected power failure, reducing the risk of corruption or incomplete writes. An UBER of 1.0E-17, together with a 2 million-hour MTBF, indicates an extremely low unrecoverable bit error rate and strong long-term operational reliability, giving procurement teams added confidence for business-critical deployments.
1. The SATA interface runs at the ceiling of the platform, making this drive a drop-in upgrade for legacy enterprise servers and storage arrays that need predictable performance without moving to a PCIe backplane.
2. Its sequential read bandwidth accelerates boot storms, large-file access, and backup restore workflows by keeping data streaming close to the practical limit of a SATA SSD.
3. Strong random read capability helps databases, virtual desktop pools, and read-heavy application stacks serve far more small-block requests with less queue buildup.
4. Low typical latency improves application responsiveness and QoS consistency, which is especially valuable for transactional workloads and latency-sensitive virtual machines.
5. The endurance profile supports sustained daily rewriting in mixed-use environments, while Samsung’s 3D TLC V-NAND provides enterprise-grade density, power efficiency, and reliability at a lower cost per gigabyte than MLC-based alternatives.
Lower capacity reference: 480 GB Higher capacity reference: 1.92 TB Capacity positioning analysis: Within this enterprise SSD family, the 960 GB model sits at the practical sweet spot. Compared with the 480 GB version, it gives much more headroom for OS images, application binaries, logs, and short-term data growth, reducing the risk of early capacity pressure. Compared with the 1.92 TB option, it keeps acquisition cost and fleet-wide budget under better control while delivering essentially the same enterprise-class read, write, and random IOPS behavior. It is best suited for mid-scale deployments, such as a virtualization cluster hosting about 40 to 60 general-purpose VM boot volumes.
Q: Is MZ-7L3960B suitable for a write-heavy database server?
A: Yes. With 1.3 DWPD, 1400 TBW, low 120 µs typical latency, and enterprise Samsung V-NAND, the MZ-7L3960B is suitable for moderately write-heavy database and transactional 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 960 GB SSD, that equals about 1.25 TB of writes daily across the specified 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 mapping tables during sudden outages, reducing corruption risk and improving reliability in servers and RAID environments.
Q: What RAID level is recommended for this SSD?
A: RAID 1, 10, or 5 can be used depending on priorities. For database workloads, RAID 10 is typically recommended for better write performance, redundancy, and faster rebuild behavior.