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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 3.84 TB |
| Usage Class | Enterprise/Read-Intensive (OEM HP/HPE) |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 inch 15mm |
|---|
| NAND Flash | Samsung V5 (9xL) TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 7008 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 450000 |
| Random Write IOPS | 40000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT3T8HBLS-00007 |
|---|
Compared with the previous MPN MZILT3T8HBLS-00007, the MZILT3T8HBLS-00AH3 PM1643a is the newer 3.84 TB SAS 12Gb/s revision, upgrading to Samsung V5 (9xL) TLC while sustaining 2100/2000 MB/s throughput and up to 450,000/40,000 IOPS. For SAS arrays needing a low-risk generational refresh, it keeps the same enterprise deployment footprint but adds a more current NAND platform with 1 DWPD and 7,008 TBW endurance, making it a stronger fit for mixed virtualization and database workloads.
With an endurance rating of 7,008 TBW, this SSD can sustain a total of 7,008 terabytes of host writes over its service life, which is far beyond the write volume of typical boot, OS, and general enterprise application workloads. In practical terms, for use cases such as a system drive or read-heavy server storage, this level of endurance provides strong long-term headroom and helps ensure stable operation for many years under normal daily write patterns. This is also an enterprise-class design with power loss protection (PLP), which helps preserve in-flight data and prevents metadata corruption if power is suddenly interrupted. Its UBER rating of 1.0E-17 means an extremely low probability of uncorrectable read errors, supporting high data integrity, while the 2 million hour MTBF further reflects a platform built for dependable continuous operation.
1. The SAS 12Gb/s interface with 2100 MB/s sequential read performance enables fast, predictable data streaming for enterprise arrays, reducing backup, restore, and large-file access bottlenecks in shared storage environments.
2. With 450,000 random read IOPS, this drive can sustain heavy OLTP, virtualization, and metadata-intensive workloads while keeping application response times stable under concurrency.
3. Rated for 1 DWPD, it is well suited for mixed-use enterprise deployments that need dependable daily write capability across a full service life without overprovisioning for endurance.
4. Samsung V5 (9xL) TLC NAND provides a strong balance of density, cost efficiency, and mature flash behavior, making it a practical choice for scaling capacity in mainstream datacenter platforms.
5. A typical latency of 110 µs helps accelerate transaction handling and VM responsiveness, supporting tighter QoS targets in latency-sensitive business applications.
Lower capacity reference: 1.92 TB Higher capacity reference: 7.68 TB At 3.84 TB, this drive sits in the sweet spot of the series. Compared with the 1.92 TB model, it gives materially better space headroom for VM growth, database expansion, and longer refresh cycles without changing the expected enterprise-class sequential throughput or random IOPS profile. Compared with the 7.68 TB option, it delivers a more balanced acquisition cost, lower overprovisioning risk, and easier budget scaling while still offering strong consolidation density. It is especially well suited for mid-sized virtualization clusters, mixed OLTP application pools, or read-heavy analytics nodes.
Q: Is MZILT3T8HBLS-00AH3 suitable for a write-heavy database server?
A: It can support mixed-use database workloads, but for truly write-heavy servers, its 1 DWPD rating may be limiting. It is better suited for balanced read/write enterprise applications.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 1 DWPD, meaning it can handle one full 3.84 TB drive write per day throughout its warranty period, aligned with its 7008 TBW endurance specification.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP is critical because it helps preserve in-flight data and metadata during sudden power failure, reducing corruption risk in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is preferred for database performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused enterprise deployments.