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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 3.84 TB |
| Usage Class | Enterprise/Read-Intensive |
| 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 | MZILT3T8HALE-00007 |
|---|
Compared with MZILT3T8HALE-00007, the PM1643a (MZILT3T8HBLSAD3) refreshes the platform with Samsung V5 (9xL) TLC and a 2100/2000 MB/s, 450,000/40,000 IOPS performance envelope, making it the better drop-in upgrade for existing 12Gb/s SAS infrastructure. With 3.84 TB, 1 DWPD, and 7008 TBW, it is especially well matched to virtualized business workloads, read-centric databases, and dual-port enterprise arrays that need predictable endurance and higher performance density without moving off SAS.
With an endurance rating of 7008 TBW, this SSD can sustain about 7 petabytes of total writes, which is equivalent to writing the full drive capacity roughly once per day in continuous enterprise operation. In typical system-disk, boot, application, or read-dominant workloads, this level of endurance is more than sufficient for many years of stable use, giving buyers strong confidence that write wear will not be a practical concern. Its enterprise reliability is further strengthened by power-loss protection, which helps preserve in-flight data and metadata during unexpected outages, reducing the risk of corruption and unplanned recovery events. An UBER of 1.0E-17 and an MTBF of 2 million hours indicate a very low probability of uncorrectable read errors and a design built for long-term 24/7 data-center operation.
1. The SAS 12Gb/s interface ensures broad compatibility with enterprise storage backplanes while providing reliable dual-port connectivity for high-availability server and array deployments.
2. With 2100 MB/s sequential read performance, the drive accelerates large-block data access for analytics, backup restoration, and content delivery workloads.
3. Delivering 450,000 random-read IOPS, it supports highly concurrent transactional environments by reducing storage bottlenecks in virtualized and database-heavy systems.
4. Rated for 1 DWPD and built on Samsung V5 (9xL) TLC NAND, the drive offers a practical endurance-cost balance for mainstream enterprise workloads with steady daily writes.
5. A typical latency of 110 µs helps shorten application response time, improving consistency for latency-sensitive services such as online transaction processing and VM hosting.
Lower capacity reference: 1.92 TB Higher capacity reference: 7.68 TB In this product family, the 3.84 TB model sits at the sweet spot of capacity planning. Compared with the 1.92 TB version, it gives much better space headroom for OS images, application growth, snapshots, and overprovisioning, reducing the risk of early capacity pressure. Compared with the 7.68 TB option, it usually delivers a more attractive cost profile while keeping broadly similar enterprise-class sequential and random I/O performance. This makes 3.84 TB especially well suited for mid-sized virtualization clusters, mixed database nodes, or dense read-heavy business applications.
Q: Is MZILT3T8HBLSAD3 suitable for a write-heavy database server?
A: It can support database workloads, but with 1 DWPD, it is better suited for mixed-use rather than very write-intensive database servers. For sustained heavy writes, a higher-endurance SSD is recommended.
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 one full 3.84 TB drive write per day. Over a typical 5-year warranty, that aligns with its 7008 TBW endurance rating.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP helps preserve in-flight data and metadata during unexpected power interruptions, reducing corruption risk and improving reliability in enterprise and transactional environments.
Q: What RAID level is recommended for this SSD?
A: RAID 1 or RAID 10 is commonly recommended for this SSD when performance and data protection are priorities. RAID 5 or 6 can be used for capacity efficiency, but write overhead is higher.