Samsung MZILS7T6HMLS-00007 7.68TB PM1633a Series SAS 12Gb/s 2.5 15mm Enterprise Data Center / Read Intensive Solid State Drive

General

Brand	Samsung
Model	PM1633a Series
Capacity	7.68TB
Usage Class	Enterprise Data Center / Read Intensive

Interface

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

Physical Dimension

Form Factor	2.5 15mm

Flash & Endurance

NAND Flash	Samsung 48-layer 3D V-NAND TLC
Drive Writes Per Day	1
Total Bytes Written	14016 TBW

Performance

Sequential Read	1200 MB/s
Sequential Write	900 MB/s
Random Read IOPS	190000
Random Write IOPS	32000
Average Latency	110 μs

Reliability

Mean Time Between Failures	2.0 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	Yes

Part Number

MPN	MZILS7T6HCJM

Engineer's Note

Compared with MZILS7T6HCJM, the MZILS7T6HMLS-00007 refreshes Samsung’s 7.68TB SAS tier with 48-layer 3D V-NAND TLC, combining 14,016 TBW endurance with up to 1,200/900 MB/s and 190,000/32,000 IOPS for a stronger balance of density, endurance, and mixed-workload responsiveness in the same 1-DWPD class. The PM1633a Series is therefore a precise fit for read-centric virtualization clusters, database servers, and scale-out storage nodes that need predictable 12Gb/s SAS performance at high capacity without paying the premium for higher-DWPD write-optimized drives.

Endurance & Reliability

With an endurance rating of 14,016 TBW and 1 DWPD, the MZILS7T6HMLS-00007 is designed to sustain writing its full capacity once per day across the warranty period, which is more than sufficient for typical enterprise system, boot, and read-intensive application workloads. In practical terms, under normal server operating patterns, this level of endurance supports many years of stable use with ample write headroom, giving procurement teams confidence in long-term deployment. Its enterprise-grade reliability is further strengthened by power-loss protection (PLP), which helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and downtime. The UBER specification of 1.0E-17, together with a 2 million hour MTBF, indicates an extremely low rate of unrecoverable bit errors and strong overall device reliability for business-critical environments.

Technical Specs & Insights

1. The dual-port SAS interface ensures high-availability connectivity and seamless integration into existing enterprise storage arrays, making it ideal for mission-critical servers that cannot tolerate a single path failure.
2. Its strong sequential read performance accelerates large-block workloads such as backup recovery, media streaming, and data warehouse scans, helping shorten batch processing windows.
3. The high random read capability enables fast response under heavily transactional workloads, improving VM density and database query performance in latency-sensitive environments.
4. With enterprise-grade TLC V-NAND and a one-drive-write-per-day endurance profile, it delivers a balanced mix of capacity, cost efficiency, and write durability for mainstream mixed-use deployments.
5. The low typical latency helps reduce storage wait time at the application layer, supporting more consistent SLA delivery for real-time analytics and business-critical services.

Capacity Sweet

Lower capacity reference: 3.84TB Higher capacity reference: 15.36TB Capacity positioning analysis: Within this SSD family, the 7.68TB model sits at the sweet spot between the 3.84TB and 15.36TB options. Compared with 3.84TB, it provides much better headroom for data growth, over-provisioning, and workload consolidation, reducing early capacity pressure in enterprise deployments. Compared with 15.36TB, it typically delivers a more attractive cost-to-capacity ratio while keeping performance in the same class for sequential throughput and random IOPS. This makes 7.68TB especially well suited for mid-scale virtualization clusters, mixed database nodes, or around 40 to 60 general-purpose cloud instances per storage tier.

FAQ