Samsung MZ-IL7T76A 7.68 TB PM1643 SAS 12.0 Gbps 2.5" Read Intensive Solid State Drive

General

Brand	Samsung
Model	PM1643
Capacity	7.68 TB
Usage Class	Read Intensive

Interface

Host Interface	SAS 12.0 Gbps
Total Interface Bandwidth	12 Gb/s

Physical Dimension

Form Factor	2.5"

Flash & Endurance

NAND Flash	Samsung V-NAND 3-bit TLC
Drive Writes Per Day	1
Total Bytes Written	14016 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	MZ7LM480HMHQ-00005

Engineer's Note

Compared with the predecessor MZ7LM480HMHQ-00005, the Samsung PM1643 (MZ-IL7T76A) delivers a clear generational leap with a 12.0 Gbps SAS interface, 7.68 TB of Samsung V-NAND 3-bit TLC, up to 2100/1700 MB/s sequential performance, and 400,000/50,000 IOPS random performance, while sustaining 1 DWPD and 14,016 TBW. Its unique value in the same class is the combination of high-capacity enterprise SAS density and balanced read/write behavior, making it a strong fit for virtualization clusters, scale-up database servers, and mixed-use storage arrays that need more usable capacity and stronger endurance than older SAS SSD generations.

Endurance & Reliability

With an endurance rating of 14,016 TBW and 1 DWPD, the MZ-IL7T76A is designed to handle sustained daily writes over a long service life, making it far more robust than what most typical server, storage, or system-boot workloads will require. In practical terms, for common enterprise OS, application, and read-centric infrastructure use, this level of endurance provides ample write headroom and can support many years of stable operation with confidence. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and protects metadata integrity if power is unexpectedly interrupted, reducing the risk of corruption during sudden shutdown events. Its UBER rating of 1.0E-17 and 2 million-hour MTBF further indicate a very low uncorrectable bit error rate and strong long-term dependability, which are key assurance points for procurement in business-critical deployments.

Technical Specs & Insights

1. The SAS interface enables seamless integration into dual-controller enterprise storage platforms, delivering dependable high-bandwidth connectivity for mission-critical servers and arrays.
2. Its strong sequential read performance accelerates backup restores, media streaming, and large dataset access, helping reduce wait time for throughput-heavy enterprise workloads.
3. The high random read capability supports dense virtualization, OLTP databases, and metadata-intensive applications by sustaining fast response under heavy concurrent access.
4. With enterprise-grade write endurance, this drive is well suited for read-centric production environments that require predictable lifespan, easier capacity planning, and lower replacement risk.
5. Built with Samsung V-NAND TLC and low typical latency, it balances cost-efficient flash density with responsive service times, making it a practical choice for scalable cloud and data center deployments.

Capacity Sweet

Lower capacity: 3.84 TB Higher capacity: 15.36 TB The 7.68 TB model sits at the sweet spot in this series. Compared with the 3.84 TB version, it gives much better headroom for data growth, denser VM placement, and longer refresh cycles without changing the expected enterprise-class read, write, or random IOPS profile. Compared with the 15.36 TB option, it typically delivers the best balance of acquisition cost, usable capacity, and performance consistency. It is especially well suited for mid-scale virtualization clusters, mixed database workloads, or high-density application nodes serving roughly 40 to 80 business workloads.

FAQ