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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 3.84TB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12G |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5-inch |
|---|
| NAND Flash | Samsung V-NAND TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 7008 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 50000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT3T8HBLT |
|---|
Compared with the earlier MZILT3T8HBLT, the PM1643a refresh delivers a clear generational step in sustained SAS 12G performance and firmware maturity, reaching up to 2,100/2,000 MB/s, 400,000/50,000 IOPS, and 7,008 TBW in the same 3.84TB enterprise form factor. Its strongest value is for latency-sensitive virtualized infrastructure and database tiers that need the reliability of Samsung V-NAND TLC with balanced 1 DWPD endurance, giving architects a higher-performance drop-in upgrade without changing a proven SAS backplane.
With an endurance rating of 7008 TBW and 1 DWPD, this SSD is designed to handle very substantial write activity over its service life, including writing the full drive capacity once per day under enterprise operating conditions. In typical real-world workloads such as OS boot, application hosting, virtualization, or read-heavy server use, actual write volumes are usually far lower, which means this drive offers ample endurance headroom for long-term deployment with confidence. Its power loss protection (PLP) helps preserve in-flight data and mapping information during an unexpected power outage, reducing the risk of corruption and supporting safer operation in enterprise systems. The UBER specification of 1.0E-17, together with a 2 million hour MTBF, indicates a very low probability of unrecoverable bit errors and strong overall reliability for business-critical storage environments.
1. The SAS 12G interface provides dual-port, enterprise-grade connectivity, enabling highly available storage paths and smooth integration into mission-critical server and RAID environments.
2. Its strong sequential read performance accelerates full-dataset scans, backup restores, and large-file streaming, helping analytics and database platforms shorten data access windows.
3. High random read capability allows the drive to sustain dense VM, OLTP, and metadata-heavy workloads with faster response under heavy concurrency.
4. With a 1 DWPD endurance profile, it is well suited for read-centric enterprise deployments that need predictable lifespan and controlled replacement costs over years of operation.
5. Samsung V-NAND TLC paired with low typical latency delivers a balanced mix of capacity efficiency, consistent QoS, and quick transaction servicing for latency-sensitive business applications.
Reference capacities in the same series: Lower capacity: 1.92TB Higher capacity: 7.68TB Capacity positioning analysis: In this lineup, 3.84TB is the sweet-spot capacity. Compared with the 1.92TB model, it gives materially better headroom for data growth, denser server consolidation, and longer refresh cycles without changing the familiar enterprise-class performance profile. Compared with the 7.68TB option, it delivers a more balanced cost-per-drive while avoiding overprovisioning in mainstream deployments. This makes 3.84TB a strong fit for mid-scale virtualization clusters, mixed database/application nodes, or roughly 40 to 60 general-purpose virtual server system volumes in a typical enterprise rack.
Q: Is MZILT3T8HBLS-000H3 suitable for a write-heavy database server?
A: It can support database workloads, but with 1 DWPD it is better suited for mixed-use or moderate write-intensive environments rather than extremely write-heavy database servers with constant high write volumes.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 1 DWPD, meaning it can sustain one full drive write per day. For 3.84TB capacity, that equals 3.84TB of writes daily within warranty limits.
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 sudden outages, which is critical for enterprise systems requiring data integrity and consistent application performance.
Q: What RAID level is recommended for this SSD?
A: RAID choice depends on your priority. RAID 10 is commonly recommended for databases needing high performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused deployments.