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| Brand | Samsung |
|---|---|
| Model | PM1643A |
| Capacity | 1.92 TB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12.0 Gbps |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5" |
|---|
| NAND Flash | Samsung V-NAND 5th-Gen 92-layer 3D TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1800 MB/s |
| Random Read IOPS | 380000 |
| 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 | MZILT1T9HBJR |
|---|
The Samsung PM1643A (MZ-ILT1T9B) 1.92TB SSD combines 5th-Gen 92-layer V-NAND with a 12.0 Gbps SAS interface to deliver up to 2100/1800 MB/s and 380K/40K IOPS, making it a strong fit for latency-sensitive virtualized infrastructure, transactional databases, and mixed enterprise read workloads. Compared with the previous-generation MZILT1T9HBJR, the PM1643A brings a newer V-NAND architecture and a more optimized enterprise SAS platform, translating into stronger sustained performance, better efficiency, and a more durable 3504 TBW endurance profile at 1 DWPD.
With an endurance rating of 3,504 TBW and 1 DWPD, the MZ-ILT1T9B is designed to handle approximately one full drive write per day across its rated service life, which is far beyond the write volume of most OS, boot, and general enterprise read-centric workloads. In typical system-disk or application-boot usage, this level of endurance provides a very comfortable margin and supports long-term deployment with low wear concerns. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and prevent metadata corruption if power is interrupted unexpectedly, which is critical for servers and storage systems. Its UBER of 1.0E-17 and 2 million-hour MTBF indicate very strong data integrity and dependability, helping procurement teams reduce operational risk and improve confidence in sustained business use.
1. The SAS 12.0 Gbps interface ensures seamless integration with dual-controller enterprise storage, enabling high availability and predictable performance in mission-critical environments.
2. With sequential read speeds of 2100 MB/s, the drive accelerates large-file access, helping databases, backups, and analytics jobs complete faster.
3. Delivering 380,000 random-read IOPS, it supports highly concurrent virtualized and transactional workloads with faster response under heavy queue depths.
4. Rated at 1 DWPD, the drive is built for steady daily write activity, making it a practical fit for mixed-use enterprise applications without overprovisioning endurance.
5. Samsung V-NAND 5th-Gen 92-layer 3D TLC, paired with a typical latency of 110 µs, provides a strong balance of density, power efficiency, and consistently responsive service times.
Reference capacities in the same enterprise SSD family for MPN MZ-ILT1T9B (1.92 TB): Lower capacity: 960 GB Higher capacity: 3.84 TB Capacity positioning analysis: At 1.92 TB, this model sits at the sweet spot of the series. Compared with the 960 GB version, it offers much better headroom for OS images, application growth, logs, and overprovisioning without changing the familiar enterprise-grade read/write and IOPS profile. Compared with the 3.84 TB option, it usually delivers the best balance of acquisition cost, usable capacity, and predictable performance per drive. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for roughly 40 to 60 general-purpose virtual machines.
Q: Is MZ-ILT1T9B suitable for a write-heavy database server?
A: MZ-ILT1T9B can support mixed and moderate write-intensive database workloads, but with 1 DWPD, it is not the best choice for highly write-heavy servers requiring higher endurance margins.
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 1.92 TB drive write per day over its warranty period, aligned with its 3504 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 mapping tables during sudden outages, which is critical for maintaining data integrity and enterprise system reliability.
Q: What RAID level is recommended for this SSD?
A: For most enterprise deployments, RAID 10 is recommended for the best balance of performance, redundancy, and low latency. RAID 5 or 6 may suit capacity-focused environments with write penalties.