Samsung MZILT15THMLA-000C4 15.36 TB PM1643 SAS 12Gb/s 2.5 inch Read Intensive Solid State Drive

General

Brand	Samsung
Model	PM1643
Capacity	15.36 TB
Usage Class	Read Intensive

Interface

Host Interface	SAS 12Gb/s
Total Interface Bandwidth	12 Gb/s

Physical Dimension

Form Factor	2.5

Flash & Endurance

NAND Flash	Samsung V-NAND 3D TLC
Drive Writes Per Day	1
Total Bytes Written	28032 TBW

Performance

Sequential Read	2100 MB/s
Sequential Write	1700 MB/s
Random Read IOPS	400000
Random Write IOPS	50000
Average Latency	115 μs

Reliability

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

Part Number

MPN	MZILT15THMLA-00007

Engineer's Note

The PM1643 MZILT15THMLA-000C4 is a strong fit for 12Gb/s SAS enterprise arrays that need maximum capacity per bay without giving up endurance, combining 15.36TB, 28,032TBW, Samsung V-NAND 3D TLC, and up to 2100/1700 MB/s with 400,000/50,000 IOPS. Compared with MZILT15THMLA-00007, this later PM1643 revision is the better consolidation drive for mixed virtualization and transactional workloads, delivering a denser, higher-throughput 1-DWPD profile that improves rack-level storage efficiency while preserving seamless deployment in existing SAS infrastructure.

Endurance & Reliability

With an endurance rating of 28,032 TBW and 1 DWPD, the MZILT15THMLA-000C4 is designed to sustain writing its full capacity once per day over a standard enterprise service life, providing substantial write headroom for demanding server workloads. In typical boot, OS, logging, and read-centric application scenarios where daily writes are much lower than this level, it can deliver many years of stable operation with endurance well beyond what most system-drive use cases require. For enterprise reliability, integrated power-loss protection (PLP) helps preserve in-flight data and protects metadata integrity during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects a high-integrity design aimed at minimizing unrecoverable read errors and supporting dependable operation in business-critical environments.

Technical Specs & Insights

1. The SAS interface integrates cleanly with enterprise backplanes and dual-controller storage architectures, enabling high availability, mature management, and predictable failover in mission-critical environments.
2. Its strong sequential read bandwidth speeds up large-block workloads such as backup restores, analytics scans, and media streaming, cutting time-to-data for throughput-heavy applications.
3. High random-read capability helps virtualized clusters, OLTP databases, and metadata-intensive platforms sustain fast user response under heavy concurrent access.
4. A 1 DWPD endurance profile is well suited to read-centric enterprise deployments, offering enough daily write headroom for mainstream server workloads without the cost of a write-optimized drive.
5. Samsung V-NAND 3D TLC provides a practical balance of capacity, efficiency, and reliability, making it a strong fit for scaling enterprise storage at a controlled cost per terabyte.

Capacity Sweet

Reference capacities in the same enterprise SSD tier: Lower capacity: 7.68 TB Higher capacity: 30.72 TB At 15.36 TB, this drive sits in the sweet spot of the family. Compared with 7.68 TB, it gives far more headroom for growth, reducing early capacity pressure and lowering the need for frequent drive expansion while keeping similar enterprise-class sequential and random performance. Compared with 30.72 TB, it delivers a better balance of acquisition cost, usable density, and predictable performance per dollar. This makes it especially well suited for mid-scale virtualization clusters, such as shared storage for about 150 to 220 general-purpose virtual desktops or mixed business application workloads.

FAQ