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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 7.68 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 | 14016 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 50000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS7T6HCHP-00007 |
|---|
Samsung PM1643 (MPN: MZILT7T6HMLA-00AC3) is a strong fit for mission-critical SAS arrays that need high-capacity flash with predictable latency, combining 7.68 TB, 2100/1700 MB/s throughput, 400K/50K IOPS, and 14,016 TBW in a 12Gb/s SAS platform. Compared with the previous-generation MZILS7T6HCHP-00007, this model leverages newer Samsung V-NAND 3D TLC to deliver a clear generational uplift in sustained performance, endurance scaling, and power efficiency, making it the better choice for mixed-read enterprise databases and virtualization clusters.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZILT7T6HMLA-00AC3 is designed to handle a full drive write per day across its warranty life, which is more than sufficient for typical enterprise server, boot, and mixed-read workloads. In practical terms, for common system-disk or mainstream data-center usage, this level of endurance provides long-term write headroom and supports years of stable operation without endurance being a concern. From a reliability perspective, built-in power loss protection (PLP) helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and improving operational safety in enterprise environments. Its ultra-low UBER of 1.0E-17, together with a 2 million-hour MTBF, indicates a very high standard of data integrity and device reliability, giving procurement teams added confidence for business-critical deployments.
1. The SAS interface, paired with strong sequential bandwidth, enables seamless integration into dual-port enterprise storage systems while accelerating backup, restore, and large-file streaming workflows.
2. The high random-read capability keeps databases, virtual machines, and metadata-heavy applications responsive even under intense concurrent access.
3. Its endurance profile supports steady full-drive rewrites across the warranty period, making it a practical fit for read-centric enterprise workloads with moderate write pressure.
4. Samsung V-NAND 3D TLC delivers an effective balance of usable capacity, power efficiency, and cost control for mainstream data center deployments.
5. The low typical latency helps maintain consistent QoS and faster application response times in transactional, virtualized, and latency-sensitive server environments.
Lower capacity reference: 3.84 TB Higher capacity reference: 15.36 TB Positioning analysis: Within this enterprise SSD family, 7.68 TB is the sweet-spot capacity. Compared with 3.84 TB, it gives meaningfully more headroom for VM growth, database expansion, and longer refresh cycles without changing the performance profile. Compared with 15.36 TB, it typically delivers a better cost-per-deployment balance while avoiding overprovisioning in mainstream server nodes. That makes 7.68 TB especially well suited for mid-scale virtualization clusters, such as shared storage tiers supporting around 40 to 60 mixed-application virtual machines per node.
Q: Is MZILT7T6HMLA-00AC3 suitable for a write-heavy database server?
A: It can support mixed-use and moderate write-intensive database workloads, but with 1 DWPD it is not ideal for highly write-heavy environments. For sustained heavy writes, a higher-endurance enterprise SSD is recommended.
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 handle one full 7.68 TB drive write per day over its warranty period, consistent with its 14,016 TBW endurance specification.
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 unexpected outages, which is critical for data integrity, consistency, and enterprise server reliability.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for database and virtualization workloads because it balances performance, redundancy, and rebuild efficiency. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered.