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| Brand | Samsung |
|---|---|
| Model | PM1643 Series |
| Capacity | 1.92TB |
| Usage Class | Enterprise Data Center / Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 15mm |
|---|
| NAND Flash | Samsung V-NAND TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 40000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 2.0 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT1T9HAJQ-00007 |
|---|
The Samsung PM1643 Series MZILT1T9HAJQAD4 delivers a strong balance of enterprise endurance and SAS consistency, combining 1.92TB of V-NAND TLC with 2100/1700 MB/s throughput, 400,000/40,000 IOPS, and 3504 TBW for mixed read-centric database, virtualization, and business-critical server workloads. Compared with the earlier MZILT1T9HAJQ-00007, this later-qualified revision preserves the PM1643 performance profile while offering a more deployment-ready lifecycle option with improved platform compatibility and refresh continuity for existing 12Gb/s SAS infrastructures.
With an endurance rating of 3,504 TBW and 1 DWPD, the MZILT1T9HAJQAD4 is built to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise OS boot, application, and mixed read/write workloads. In practical terms, for common server system-disk use cases, this level of endurance supports many years of stable operation with substantial write headroom, giving buyers confidence that the drive will not be a wear-out concern in normal deployment. For enterprise reliability, built-in power loss protection (PLP) helps preserve in-flight data and protect mapping tables during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its ultra-low UBER of 1.0E-17, together with a 2 million hour MTBF, indicates very strong data integrity and long-term operational reliability, making it a dependable choice for business-critical environments.
1. The SAS 12Gb/s interface provides dual-port, enterprise-grade connectivity that improves high-availability storage design and simplifies integration into mission-critical server and array environments.
2. With 2100 MB/s sequential read performance, this SSD accelerates large-block workloads such as database backup, media streaming, and faster data restore operations.
3. Up to 400,000 random read IOPS enables the drive to handle dense virtualization, OLTP databases, and metadata-heavy applications with consistently fast user response times.
4. Rated for 1 DWPD and built with Samsung V-NAND TLC, it delivers a practical balance of endurance, capacity efficiency, and predictable lifecycle cost for mainstream enterprise write workloads.
5. A typical latency of 120 µs helps reduce storage wait time, supporting more responsive applications and steadier QoS in mixed-workload data center deployments.
Lower capacity reference: 960GB Higher capacity reference: 3.84TB Capacity positioning analysis: In this series, 1.92TB is the practical sweet spot. Compared with 960GB, it gives much better headroom for OS growth, application patches, logs, and short-term data expansion, reducing the risk of early capacity pressure. Compared with 3.84TB, it keeps acquisition cost and replacement budget under tighter control while delivering essentially the same enterprise-class sequential throughput and random IOPS profile. This makes 1.92TB especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 business VMs per node.
Q: Is MZILT1T9HAJQAD4 suitable for a write-heavy database server?
A: It can support mixed or moderate-write database workloads, but with 1 DWPD and TLC V-NAND, it is not the best fit for highly write-intensive database environments.
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 sustain one full 1.92TB drive write per day throughout its warranty period, aligned with its 3504TB TBW 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 sudden outages, which is critical for maintaining data integrity in enterprise storage systems.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is generally recommended for this SSD when performance and redundancy are both priorities. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered.