General

Brand	Samsung
Model	SM841N
Capacity	120GB
Usage Class	Client

Interface

Host Interface	SATA
Total Interface Bandwidth	6 Gb/s

Physical Dimension

Form Factor	2.5

Flash & Endurance

NAND Flash	MLC
Drive Writes Per Day	0.5
Total Bytes Written	75 TBW

Performance

Sequential Read	530 MB/s
Sequential Write	130 MB/s
Random Read IOPS	85000
Random Write IOPS	35000
Average Latency	50 μs

Reliability

Mean Time Between Failures	1.5 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	No

Part Number

MPN	MZ-7PD128

Engineer's Note

Compared with the earlier MZ-7PD128, the SM841N MZ-7TE120 delivers a clear generational step toward read-optimized SATA performance, combining 530/130 MB/s sequential throughput with up to 85,000/35,000 IOPS and 75 TBW of MLC-based endurance in a leaner 120GB footprint. Its unique value is as a highly predictable boot, logging, or metadata-tier SSD, where the 0.5 DWPD endurance profile and strong random-read capability provide better efficiency and lower latency consistency than legacy low-capacity enterprise SATA drives in the same class.

Endurance & Reliability

With an endurance rating of 75 TBW and 0.5 DWPD, the MZ-7TE120 is well suited to typical light-duty workloads such as OS boot, office applications, and read-heavy system use. In practical terms, 75 TBW equals about 20 GB of writes per day over 10 years, so for use as a system drive or embedded boot disk, it provides comfortable endurance headroom under normal operating conditions. Its UBER specification of 1.0E-15 means the drive is designed for a very low rate of unrecoverable bit errors, supporting dependable data reads in everyday business operation. This model does not include power-loss protection (PLP), so it is best deployed in systems with controlled shutdown, UPS support, or non-write-critical workloads rather than applications that require in-flight write protection during sudden power failure.

Technical Specs & Insights

1. The SATA interface makes this drive easy to deploy in legacy enterprise servers and storage arrays, enabling low-risk upgrades without changing backplanes or host infrastructure.
2. Its near–bus-limit sequential read performance helps accelerate boot storms, backup restores, and large file access in read-heavy business environments.
3. Strong random read capability allows the SSD to sustain responsive performance for virtual desktops, OLTP lookups, and heavily indexed database workloads under concurrent access.
4. With a modest write endurance profile, it is best suited for read-centric enterprise use cases such as content delivery, reference data stores, and boot volumes rather than write-intensive logging tiers.
5. MLC NAND combined with very low typical latency provides more predictable response times and stronger cell reliability than TLC-based alternatives, which is valuable for latency-sensitive enterprise applications.

Capacity Sweet

Lower capacity: None in the standard MZ-7TE enterprise lineup; 120GB is the entry capacity Higher capacity: 240GB At 120GB, the MZ-7TE120 sits at the practical entry sweet spot of the series. As the smallest standard SKU, it already offers enough headroom for OS images, logs, patch growth, and light application data, avoiding the tight space constraints typical of sub-120GB boot media. Compared with the 240GB model, it preserves very similar enterprise SATA performance while lowering acquisition cost and improving budget efficiency per node. It is best suited for small VDI pools, clustered infrastructure boot drives, or around 25 to 40 lightweight virtual machine system disks.

FAQ