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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 1.92 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 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 | 410000 |
| Random Write IOPS | 50000 |
| Average Latency | 115 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT1T9HAJQ-00007 |
|---|
The Samsung PM1643a (MZ-ILT1T9C) is a strong fit for mainstream enterprise SAS tiers that need predictable 1 DWPD endurance, 3,504 TBW, and high transactional responsiveness, with up to 2,100/1,800 MB/s sequential throughput and 410K/50K random IOPS in a 1.92 TB footprint. Compared with the previous-generation MZILT1T9HAJQ-00007, the PM1643a advances to Samsung V-NAND 3D TLC and delivers a more modern balance of bandwidth, endurance, and cost efficiency for virtualization clusters, database volumes, and read-heavy mixed workloads.
With an endurance rating of 3504 TBW, the MZ-ILT1T9C can sustain 3.5 petabytes of total writes, which is far beyond the write volume of a typical OS boot drive or mainstream business application workload. In practical terms, for normal system-disk use, this level of endurance provides long-term peace of mind and can comfortably support many years of stable operation without endurance concerns. Its enterprise-grade reliability is further strengthened by Power Loss Protection (PLP), which helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and unplanned recovery events. The ultra-low UBER of 1.0E-17, together with a 2 million hour MTBF, indicates extremely high data integrity and dependable operation, making it a trustworthy choice for procurement in business-critical environments.
1. The SAS 12Gb/s interface, paired with 2100 MB/s sequential read speed, enables fast bulk data movement for databases, virtualization clusters, and backup-heavy enterprise workloads.
2. With 410,000 K IOPS in random reads, the drive can sustain highly concurrent small-block access patterns, helping transaction systems and metadata-intensive applications stay responsive under load.
3. A 1 DWPD endurance rating makes it well suited for mixed-use enterprise deployments that need predictable write life across years of continuous operation without overpaying for higher-write media.
4. Samsung V-NAND 3D TLC provides a strong balance of capacity, power efficiency, and cost, making it a practical flash choice for scaling enterprise storage while maintaining dependable performance.
5. A typical latency of 115 µs helps reduce storage wait time at the application layer, supporting faster query response and more consistent service levels in latency-sensitive environments.
Lower capacity reference: 960 GB Higher capacity reference: 3.84 TB At 1.92 TB, this model sits in the sweet spot of the lineup. Compared with the 960 GB version, it offers much better headroom for OS images, application growth, log retention, and overprovisioning flexibility, reducing the risk of early capacity pressure. Compared with the 3.84 TB model, it delivers nearly the same enterprise-class read/write and random IOPS behavior while keeping acquisition cost and per-node storage budgeting more controlled. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for around 40 to 60 general-purpose virtual machines.
Q: Is MZ-ILT1T9C suitable for a write-heavy database server?
A: MZ-ILT1T9C can support mixed-use database workloads, but with 1 DWPD, it is better suited for moderate write intensity rather than very write-heavy database environments requiring higher endurance.
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 across 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 metadata during unexpected power failure, which is critical for maintaining data integrity and reducing corruption risk.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on workload needs. RAID 1 or RAID 10 is typically preferred for databases, while RAID 5 or RAID 6 may suit capacity-focused applications.