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| Brand | Samsung |
|---|---|
| Model | PM1633a |
| Capacity | 3.84 TB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12.0 Gbps |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5" |
|---|
| NAND Flash | Samsung V-NAND 48-layer 3D TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 7008 TBW |
| Sequential Read | 1350 MB/s |
|---|---|
| Sequential Write | 1000 MB/s |
| Random Read IOPS | 200000 |
| Random Write IOPS | 37000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ7L3960HBLT |
|---|
Compared with the earlier MZ7L3960HBLT, the PM1633a MZ-ILS3T80 advances to Samsung 48-layer 3D TLC V-NAND and delivers a stronger enterprise balance of 1350/1000 MB/s throughput, 200,000/37,000 IOPS, and 7008 TBW endurance in a 3.84 TB SAS 12.0 Gbps drive. This makes it a particularly strong fit for read-centric virtualized infrastructure, OLTP databases, and scale-out storage tiers that need higher usable capacity and consistent SAS dual-port reliability without moving to a higher-DWPD cost point.
With an endurance rating of 7,008 TBW, the MZ-ILS3T80 can sustain approximately 7 TB of host writes per day over its rated life, which is far beyond the write volume of most boot, OS, and read-heavy enterprise workloads. In practical terms, for typical system-disk usage, this provides substantial endurance headroom and supports worry-free long-term deployment, including multi-year service well beyond ordinary daily write requirements. Its enterprise-grade power loss protection (PLP) helps preserve data in flight during an unexpected power outage, reducing the risk of corruption and improving operational resilience. An UBER of 1.0E-17, together with a 2 million hour MTBF, indicates very strong data integrity and reliability, giving procurement teams confidence for business-critical environments.
1. The SAS interface gives this drive dual-port enterprise connectivity, making it a strong fit for high-availability storage arrays where failover and consistent shared access matter.
2. Its sequential read performance helps large databases, virtual machine images, and backup sets load faster, shortening recovery windows and bulk data access time.
3. Its random read capability supports dense mixed-workload environments by sustaining fast access to small blocks, which improves VM responsiveness and transaction-heavy application performance.
4. The endurance rating is suited to read-centric enterprise deployments, giving IT teams predictable lifespan and lower replacement risk in content delivery, boot, and archival-access tiers.
5. Samsung’s 3D TLC V-NAND balances enterprise-class capacity, power efficiency, and cost, while the low typical latency helps deliver quicker application response and steadier QoS under load.
lower_capacity: 1.92 TB higher_capacity: 7.68 TB At 3.84 TB, this SSD sits in the sweet spot of the series. Compared with the 1.92 TB model, it gives much better headroom for OS images, databases, logs, and application growth, reducing the risk of early capacity pressure. Compared with the 7.68 TB option, it usually delivers a more attractive cost-to-usable-capacity balance while keeping broadly similar enterprise-class sequential and random performance. It is well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 business workloads.
Q: Is MZ-ILS3T80 suitable for a write-heavy database server?
A: MZ-ILS3T80 can support mixed or moderate write-intensive database workloads, but with 1 DWPD it is not ideal for extremely 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 3.84 TB drive write per day over its warranty period. Its 7008 TBW rating confirms strong enterprise-class write endurance.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, MZ-ILS3T80 includes power loss protection. PLP helps preserve in-flight data and mapping tables during sudden outages, reducing risks of data corruption, incomplete writes, and unexpected system recovery issues.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is best for database performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused deployments with acceptable write penalties.