Samsung MZILT3T2HBLS-00AH3 3.2 TB PM1645a SAS 12Gb/s 2.5 inch Mixed Use Solid State Drive

General

Brand	Samsung
Model	PM1645a
Capacity	3.2 TB
Usage Class	Mixed Use

Interface

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

Physical Dimension

Form Factor	2.5

Flash & Endurance

NAND Flash	TLC V-NAND
Drive Writes Per Day	3
Total Bytes Written	17520 TBW

Performance

Sequential Read	1000 MB/s
Sequential Write	1000 MB/s
Random Read IOPS	230000
Random Write IOPS	140000
Average Latency	45 μs

Reliability

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

Part Number

MPN	MZILT3T2HALS-000H3

Engineer's Note

Compared with MZILT3T2HALS-000H3, the Samsung PM1645a MZILT3T2HBLS-00AH3 moves to a newer TLC V-NAND generation and delivers a stronger enterprise balance of endurance and performance, with 3 DWPD, 17,520 TBW, and up to 230,000/140,000 random read/write IOPS. For 12Gb/s SAS arrays running latency-sensitive OLTP databases, virtualization clusters, or mixed read/write enterprise workloads, this 3.2TB model stands out by combining full-duplex 1000/1000 MB/s throughput with high write durability in the same capacity class.

Endurance & Reliability

With an endurance rating of 17,520 TBW and 3 DWPD, the MZILT3T2HBLS-00AH3 is built for sustained enterprise write workloads and can comfortably handle repeated full-drive writes every day throughout its service life. In typical server or system-disk use, this level of endurance is far beyond normal operating demand, giving buyers strong confidence in long-term deployment stability. For enterprise reliability, the drive includes power loss protection (PLP), which helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and downtime. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects a very low probability of uncorrectable read errors and dependable operation in business-critical environments.

Technical Specs & Insights

1. The SAS 12Gb/s interface provides dual-port, enterprise-grade connectivity that improves path redundancy and simplifies integration into high-availability storage arrays.
2. With 1000 MB/s sequential read performance, the drive accelerates large-block data access for backup, media streaming, and analytics workloads that scan massive datasets.
3. Delivering 230,000K random read IOPS, it supports highly concurrent transaction processing and virtualization environments where fast access to small files directly impacts application responsiveness.
4. Rated for 3 DWPD and built on TLC V-NAND, the drive offers a strong balance of write endurance and flash efficiency for mixed-use enterprise deployments with sustained daily writes.
5. A typical latency of 45 µs helps reduce storage response time, enabling databases and latency-sensitive applications to serve users with more consistent performance under load.

Capacity Sweet

Reference capacities in the same family: Lower capacity: 1.6 TB Higher capacity: 6.4 TB Capacity positioning analysis: The 3.2 TB model sits at the sweet spot of this enterprise SSD family. Compared with the 1.6 TB version, it provides much better headroom for data growth, denser VM placement, and longer refresh cycles without changing the familiar enterprise-class read/write and IOPS profile. Compared with the 6.4 TB option, it delivers a more balanced acquisition cost while still offering enough usable capacity for mainstream infrastructure. It is especially well suited for mid-sized virtualization clusters, such as hosting boot and application volumes for around 40 to 60 business VMs.

FAQ