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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 3.84TB |
| Usage Class | Enterprise |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 7008 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 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 | MZILS3T8HMLH |
|---|
The Samsung PM1643 (MZILS400HCGR-000H4) is a strong upgrade from the previous-generation MZILS3T8HMLH, leveraging newer Samsung 3-bit V-NAND to deliver a better performance-per-watt and endurance balance while sustaining 2100/1700 MB/s sequential throughput and 380K/40K IOPS at 3.84TB. For enterprise SAS arrays, it offers distinctive value by combining 12Gb/s dual-port compatibility with 1 DWPD and 7008 TBW, making it a particularly solid fit for read-centric virtualization, database acceleration, and mixed-workload storage tiers that need higher density without sacrificing reliability.
With an endurance rating of 7008 TBW and 1 DWPD, the MZILS400HCGR-000H4 is designed to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise system-boot, application, and general server workloads. In practical terms, under normal OS and business application usage, this level of write endurance provides long-term operational headroom and can support many years of stable deployment with low concern about wear-out. As an enterprise-class SSD, it includes Power Loss Protection (PLP), which helps safeguard in-flight data and mapping tables during unexpected power interruptions, reducing the risk of data corruption and improving recovery confidence. Its ultra-low UBER of 1.0E-17, together with a 2 million hour MTBF, indicates a very high standard of data integrity and overall reliability, making it a dependable choice for procurement in business-critical environments.
1. The SAS 12Gb/s interface provides proven dual-port enterprise connectivity, improving high-availability storage designs and minimizing service disruption in mission-critical servers.
2. Up to 2100 MB/s sequential read performance speeds up backup recovery, large-file access, and analytics dataset ingestion, helping reduce data wait time across throughput-heavy workloads.
3. Up to 380,000 random-read IOPS keeps virtualized environments, transactional databases, and metadata-intensive applications highly responsive under heavy parallel access.
4. A 1 DWPD endurance rating gives enterprises predictable full-drive daily rewrite capability over the product life, making it well suited for mainstream mixed-use data center deployments.
5. Samsung V-NAND 3bit MLC (TLC) paired with typical 110 µs latency delivers a cost-efficient balance of flash density and fast response, helping lower application latency without sacrificing enterprise scalability.
Lower capacity reference: 1.92TB Higher capacity reference: 7.68TB Capacity positioning analysis: In this series, the 3.84TB model sits at the sweet spot between the 1.92TB and 7.68TB options. Compared with 1.92TB, it offers much better headroom for OS, application, log, and working data growth, reducing early capacity pressure in production. Compared with 7.68TB, it typically delivers a more attractive cost-per-deployment while keeping enterprise-standard sequential throughput and random IOPS at a similar level. This makes 3.84TB especially suitable for mid-scale virtualization clusters, container nodes, database replicas, or around 40 to 60 mixed enterprise application instances.
Q: Is MZILS400HCGR-000H4 suitable for a write-heavy database server?
A: It can support mixed or moderate write-intensive database workloads, but with 1 DWPD it is not the best choice for truly write-heavy servers. Higher-endurance SSDs are recommended for constant intensive writes.
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 3.84TB drive write per day across its warranty period, aligned with its 7008TB total bytes written 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 maintaining data integrity, consistency, and preventing corruption in enterprise environments.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for database and virtualization workloads, as it balances performance and redundancy well. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered.