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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 30.72 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 | 56064 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 50000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT30THALS-00007 |
|---|
Samsung’s MZILT30THALA-00AHI (PM1643a) is a high-capacity 30.72 TB SAS 12Gb/s SSD that combines Samsung V-NAND 3D TLC with up to 2,100/1,700 MB/s throughput, 400K/50K IOPS, and 56,064 TBW endurance, making it a strong fit for dense enterprise storage pools, scale-up database tiers, and capacity-optimized virtualized infrastructure. Compared with the previous MZILT30THALS-00007, the PM1643a represents a newer-generation qualification path that delivers the same class-leading SAS capacity point with a refreshed platform for better long-term deployment confidence in 24x7 datacenter arrays.
With an endurance rating of 56,064 TBW and 1 DWPD, the MZILT30THALA-00AHI is designed to sustain heavy, continuous write workloads across its service life, making it well suited for enterprise servers and storage platforms. In typical operating conditions, this level of endurance means it can comfortably serve as a high-activity system or application drive for many years without endurance becoming a practical concern. For enterprise reliability, the drive includes power loss protection (PLP), which helps preserve in-flight data and protect metadata integrity during unexpected power interruptions. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects a very low probability of uncorrectable bit errors and strong long-term operational dependability for business-critical environments.
1. The dual-port SAS interface provides enterprise-grade high availability and seamless integration with existing storage arrays, making it ideal for mission-critical infrastructure that cannot tolerate path failures.
2. Its strong sequential read capability accelerates large-block workloads such as backup restores, media streaming, and analytics scans, reducing data access bottlenecks across shared storage environments.
3. The very high random read performance enables fast response for database indexes, virtualization clusters, and heavily queried transactional workloads where consistent small-block access is essential.
4. This endurance class is well suited for read-intensive enterprise deployments, giving operators predictable lifespan and lower cost per usable terabyte in mixed production environments.
5. Samsung V-NAND 3D TLC combines mature enterprise flash density with dependable efficiency, helping data centers scale capacity while maintaining solid reliability, power characteristics, and total cost of ownership.
Lower capacity reference: 15.36 TB Higher capacity reference: N/A in the same series (30.72 TB is the top-capacity SKU) At 30.72 TB, this model sits at the practical sweet spot of the series. Compared with the 15.36 TB version, it gives materially more headroom for data growth, denser server consolidation, and longer refresh cycles without changing the expected enterprise-class sequential throughput or random IOPS profile. Since there is no larger same-series SKU, 30.72 TB also represents the highest density available before moving to a different product family, helping balance acquisition cost, rack efficiency, and operational simplicity. It is well suited for a compact 2U virtualization cluster hosting about 150 mixed-purpose virtual desktops.
Q: Is MZILT30THALA-00AHI suitable for a write-heavy database server?
A: It can support mixed and moderate write-intensive database workloads, but with 1 DWPD and TLC NAND, it is not ideal for extremely write-heavy environments compared with higher-endurance enterprise SSDs.
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 30.72 TB drive write per day during its warranty period, aligned with its 56,064 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 outages, which is critical for maintaining data integrity and preventing corruption in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is typically recommended for performance-sensitive and business-critical workloads, while RAID 5 or RAID 6 may suit capacity-focused deployments. The best choice depends on performance, redundancy, and rebuild priorities.