Samsung MZ-7L39600 960 GB PM863 SATA 6.0 Gbps 2.5" Read Intensive Solid State Drive

General

Brand	Samsung
Model	PM863
Capacity	960 GB
Usage Class	Read Intensive

Interface

Host Interface	SATA 6.0 Gbps
Total Interface Bandwidth	6 Gb/s

Physical Dimension

Form Factor	2.5"

Flash & Endurance

NAND Flash	Samsung V-NAND 3D TLC
Drive Writes Per Day	1.3
Total Bytes Written	1400 TBW

Performance

Sequential Read	520 MB/s
Sequential Write	475 MB/s
Random Read IOPS	99000
Random Write IOPS	18000
Average Latency	95 μs

Reliability

Mean Time Between Failures	2 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	Yes

Part Number

MPN	MZ-76P1T0E

Engineer's Note

Compared with the MZ-76P1T0E, the Samsung PM863 MZ-7L39600 increases endurance to 1,400 TBW at 1.3 DWPD—about a 17% TBW uplift—while sustaining enterprise-class SATA performance of up to 520/475 MB/s and 99,000/18,000 IOPS. Its unique value is combining Samsung V-NAND 3D TLC efficiency with higher write endurance in a 960 GB SATA 6.0 Gbps form factor, making it a stronger fit than the prior generation for read-centric virtualization, boot, and scale-out storage nodes that need predictable longevity on legacy SATA infrastructure.

Endurance & Reliability

With an endurance rating of 1,400 TBW and 1.3 DWPD, the MZ-7L39600 is designed to comfortably handle sustained daily write activity in typical enterprise and commercial workloads. In practical terms, this level of endurance is more than sufficient for long-term use as a stable OS, boot, or application drive, giving buyers confidence in dependable operation over years of normal deployment. The drive also includes power loss protection (PLP), which helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and unclean shutdown issues. Its enterprise-class UBER of 1.0E-17, together with a 2 million hour MTBF, indicates an extremely low unrecoverable bit error rate and strong overall reliability for business-critical environments.

Technical Specs & Insights

1. The SATA interface ensures broad compatibility with mainstream enterprise servers and storage arrays, enabling straightforward upgrades without changing existing backplane or controller infrastructure.
2. Its sustained sequential read performance accelerates large-block workloads such as database backup, VM image loading, and analytics dataset access, helping reduce wait time in read-heavy environments.
3. Strong random read capability, paired with low response latency, supports high-concurrency OLTP, virtualization, and metadata-intensive applications by keeping transactions responsive under mixed enterprise workloads.
4. The endurance rating is suited for steady-state business applications with consistent daily write activity, giving IT teams a practical balance of lifespan, service reliability, and cost efficiency.
5. Samsung V-NAND 3D TLC provides higher flash density and mature enterprise-grade performance characteristics, making it well suited for capacity-focused deployments that still require dependable operation.

Capacity Sweet

Reference capacities in the same series: Lower capacity: 480 GB Higher capacity: 1.92 TB Capacity positioning analysis: In this series, the 960 GB model sits at the sweet spot between entry capacity and large-volume deployment. Compared with the 480 GB version, it gives much better headroom for OS images, application binaries, logs, and steady data growth, reducing the risk of early capacity pressure. Compared with the 1.92 TB model, it delivers nearly the same enterprise-class sequential and random performance while keeping acquisition cost and per-node budget more controlled. It is especially well suited for mid-sized virtualization clusters, such as hosting boot and application volumes for about 40 to 60 business servers.

FAQ