Samsung MZ1LW1T9HMLS 1.92TB PM963 PCIe Gen3 x4 NVMe M.2 Read Intensive / Data Center Solid State Drive

General

Brand	Samsung
Model	PM963
Capacity	1.92TB
Usage Class	Read Intensive / Data Center

Interface

Host Interface	PCIe Gen3 x4 NVMe
Total Interface Bandwidth	32 Gb/s

Physical Dimension

Form Factor	M.2

Flash & Endurance

NAND Flash	Samsung V-NAND TLC
Drive Writes Per Day	1.3
Total Bytes Written	2733 TBW

Performance

Sequential Read	2000 MB/s
Sequential Write	1200 MB/s
Random Read IOPS	430000
Random Write IOPS	40000
Average Latency	85 μs

Reliability

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

Part Number

MPN	MZ1LV1T9HCHP

Engineer's Note

Compared with the earlier MZ1LV1T9HCHP, the Samsung PM963 (MZ1LW1T9HMLS) stands out by combining 1.92TB of Samsung V-NAND TLC with enterprise-class 2733TB TBW (1.3 DWPD) and up to 430,000/40,000 random read/write IOPS over PCIe Gen3 x4 NVMe. This makes it a stronger choice for dense, read-centric virtualization, scale-out web, and database serving tiers that need higher usable capacity and solid endurance without moving to a higher-cost write-optimized SSD class.

Endurance & Reliability

With an endurance rating of 2,733 TBW and 1.3 DWPD, the MZ1LW1T9HMLS is built to handle sustained daily write activity over its service life, making it well suited for enterprise boot, caching, and general server workloads. In typical system-disk or mixed-use deployments, this level of endurance translates into many years of dependable operation, so buyers can deploy it with confidence for long-term use. For enterprise reliability, the drive includes power loss protection (PLP), which helps preserve data in flight and prevents corruption if power is interrupted unexpectedly. Its UBER rating of 1.0E-17, together with a 2 million hour MTBF, indicates very strong data integrity and a low probability of unrecoverable read errors, supporting stable operation in business-critical environments.

Technical Specs & Insights

1. The PCIe Gen3 x4 NVMe interface eliminates legacy storage bottlenecks, enabling enterprise servers to process parallel I/O more efficiently in virtualized and scale-out environments.
2. With 2000 MB/s sequential read performance, the drive accelerates large-file access such as database snapshots, analytics scans, and VM image loading.
3. Delivering 430K random-read IOPS, it sustains fast small-block access for transaction-heavy databases, metadata-intensive workloads, and high-density virtualization.
4. Rated for 1.3 DWPD and built on Samsung V-NAND TLC, the drive offers a practical balance of write endurance, capacity efficiency, and predictable cost for mixed-use enterprise deployments.
5. A typical latency of 85 µs helps reduce application wait time, improving responsiveness for latency-sensitive services such as OLTP, caching, and real-time infrastructure workloads.

Capacity Sweet

For MPN MZ1LW1T9HMLS 1.92TB, the nearest lower capacity in the same enterprise SSD family is typically 960GB, and the next higher capacity is typically 3.84TB. Across this series, sequential read/write performance and random IOPS are generally in the same enterprise-class range, so capacity selection is mainly about endurance, space efficiency, and cost structure. The 1.92TB model sits at the sweet spot of the lineup. Compared with the 960GB version, it gives much better headroom for OS images, logs, hot data, and growth without forcing early capacity expansion. Compared with the 3.84TB option, it usually delivers the best balance of acquisition cost, usable capacity, and steady enterprise performance. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for around 40 to 60 business VMs in a balanced, cost-aware deployment.

FAQ