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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 15.36 TB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | TLC V-NAND |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 28032 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1800 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 60000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-ILT15T3 |
|---|
Compared with the previous-generation MZ-ILT15T3, the PM1643 (MZILT15THMLA0D4) brings a higher-density 15.36 TB TLC V-NAND design and a stronger SAS 12Gb/s performance envelope of up to 2100/1800 MB/s and 400K/60K IOPS, making it a clear step forward for capacity-optimized enterprise tiers. With 1 DWPD endurance and 28,032 TBW, it is a well-balanced choice for virtualized infrastructure, scale-up databases, and mixed read/write datacenter workloads that need better usable capacity and throughput than earlier SAS enterprise SSD generations.
With an endurance rating of 28,032 TBW and 1 DWPD, this 15.36TB SSD is built to sustain one full drive write per day across its rated service life, which is well above the write demand of most boot, application, and mixed-read enterprise workloads. In practical terms, for typical system-disk or read-heavy server usage, it provides substantial endurance headroom for many years of operation without write wear becoming a primary concern. Its power loss protection (PLP) helps preserve in-flight data and critical metadata during unexpected power interruptions, reducing the risk of corruption and improving restart reliability in enterprise systems. Combined with an ultra-low UBER of 1.0E-17 and a 2 million-hour MTBF, it delivers enterprise-grade data integrity and dependable long-term operation for business-critical deployments.
1. The SAS 12Gb/s interface provides dual-port enterprise connectivity and proven storage fabric compatibility, making this drive a strong fit for high-availability servers and mission-critical arrays.
2. Its 2100 MB/s sequential read performance accelerates large-block workloads such as database backup, analytics scans, and virtual machine image loading.
3. With 400,000 random read IOPS, the drive can sustain heavy transactional access patterns, helping reduce storage bottlenecks in OLTP, VDI, and metadata-intensive environments.
4. Rated for 1 DWPD, it is well suited for mixed-use enterprise deployments that need predictable write endurance for daily production workloads without overpaying for extreme write-centric media.
5. TLC V-NAND paired with a typical latency of 100 µs delivers a balanced combination of flash density, cost efficiency, and fast response time for consistent application performance under multi-user load.
Lower capacity reference: 7.68 TB Higher capacity reference: 30.72 TB Capacity positioning analysis: Within this enterprise SSD family, the 15.36 TB model sits at the sweet spot. Compared with 7.68 TB, it offers much better headroom for data growth, denser server consolidation, and longer refresh cycles without changing the storage footprint. Compared with 30.72 TB, it delivers a more balanced acquisition cost while keeping the same enterprise-class sequential throughput and random IOPS profile expected in this series. It is especially well suited for mid-scale virtualization clusters, mixed database nodes, or high-density all-flash arrays serving around 200 to 300 business-critical VDI users.
Q: Is MZILT15THMLA0D4 suitable for a write-heavy database server?
A: MZILT15THMLA0D4 can support mixed-use database workloads, but with 1 DWPD it is better suited to moderate write intensity rather than truly write-heavy environments requiring higher daily endurance.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated at 1 DWPD, meaning it can sustain one full 15.36 TB drive write per day over its warranty period, aligned with its 28,032 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 sudden outages, which is critical for enterprise systems requiring data integrity and transactional consistency.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on workload and availability needs. RAID 10 is preferred for high-performance databases, while RAID 5 or RAID 6 may suit capacity-focused applications.