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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 3.84 TB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3bit MLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 7008 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 40000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT3T8HMLS-00007 |
|---|
The Samsung PM1643 MZILT3T8HALSAD3 is a strong recommendation for 12Gb/s SAS enterprise arrays that need a balanced 3.84TB drive, combining 2100/1700 MB/s throughput, 400,000/40,000 IOPS, and 7008 TBW on Samsung V-NAND 3-bit MLC for highly consistent mixed-read virtualization and database workloads. Compared with the previous-generation MZILT3T8HMLS-00007, this PM1643 brings a newer-generation platform with a stronger endurance-to-capacity profile and higher practical read responsiveness, making it the better choice for modern server refreshes where uptime, latency stability, and rack-level storage density matter.
With an endurance rating of 7008 TBW and 1 DWPD, the MZILT3T8HALSAD3 is designed to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise boot, application, and mixed-read workloads. In practical terms, for common system-disk or server OS usage, this level of endurance supports long-term deployment with comfortable write margin and low concern about premature wear under normal operating conditions. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17, together with a 2 million hour MTBF, indicates a very low probability of unrecoverable bit errors and strong overall dependability for business-critical storage environments.
1. The SAS 12Gb/s interface provides dual-port enterprise connectivity and broad server compatibility, enabling highly available storage paths for mission-critical systems.
2. Its strong sequential read bandwidth accelerates large-block workloads such as backup restores, analytics scans, and virtualization image loading.
3. The high random read capability sustains fast response under heavily concurrent OLTP, VDI, and metadata-intensive enterprise applications.
4. With a 1 DWPD endurance profile built on Samsung V-NAND 3bit MLC, it offers a balanced write lifespan and cost structure for mainstream mixed-use datacenter deployments.
5. The low typical latency helps reduce queue wait time and improves application responsiveness for databases and real-time transactional workloads.
For MPN MZILT3T8HALSAD3 (3.84 TB), the nearest lower capacity in the same enterprise SSD family is typically 1.92 TB, and the next higher capacity is typically 7.68 TB. In this class, sequential read/write and random IOPS are generally very close across capacities, so the main difference is usable space and cost efficiency. At 3.84 TB, this model sits in the sweet spot of the lineup. Compared with 1.92 TB, it gives much better headroom for data growth, higher VM density, and longer refresh cycles without quickly hitting capacity limits. Compared with 7.68 TB, it usually delivers a more attractive cost-to-capacity balance while keeping essentially the same enterprise performance profile. It is well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for around 40 to 60 business VMs.
Q: Is MZILT3T8HALSAD3 suitable for a write-heavy database server?
A: It can support mixed-use or moderate write database workloads, but with 1 DWPD, it is not the best choice for highly write-intensive database servers requiring higher endurance.
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 over its warranty period, aligned with 7008 TBW endurance.
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 outages, which is critical for data integrity, consistency, and enterprise application reliability.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for enterprise SSDs when performance and redundancy are both important. RAID 5 or 6 may also work, depending on capacity efficiency and workload requirements.