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| Brand | Samsung |
|---|---|
| Model | PM1633a |
| Capacity | 1.92TB |
| 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 | 3504 TBW |
| Sequential Read | 1200 MB/s |
|---|---|
| Sequential Write | 900 MB/s |
| Random Read IOPS | 190000 |
| 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 | MZILS1T9HMLH |
|---|
Compared with the previous-generation MZILS1T9HMLH, the Samsung PM1633a (MZILS1T9HCHP-000D4) uses newer V-NAND and a tuned 12Gb/s SAS design to deliver up to 1,200/900 MB/s and 190K/37K IOPS, giving dual-port enterprise servers higher throughput and better random-read responsiveness in the same 1.92TB class. Its 1 DWPD rating and 3,504 TBW endurance make it a stronger fit for virtualization, database, and read-centric mixed workloads, where it offers a more balanced combination of performance, endurance, and $/TB efficiency than its predecessor.
With an endurance rating of 3504 TBW and 1 DWPD, the MZILS1T9HCHP-000D4 is built to handle a full drive write every day across its warranty period, which is more than sufficient for typical server boot, virtualization, logging, and mixed enterprise workloads. In practical terms, for lighter duty such as use as a system or application drive, this level of endurance provides long-term peace of mind and can comfortably support many years of normal operation. This model also includes power-loss protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is interrupted unexpectedly, reducing the risk of corruption and unplanned recovery events. Its enterprise-class UBER of 1.0E-17, together with a 2 million hour MTBF, indicates a very low uncorrectable bit error rate and strong overall reliability expectations for data center deployment.
1. The SAS 12Gb/s interface provides dual-port enterprise connectivity and broad compatibility with existing server and storage arrays, simplifying high-availability deployments in mission-critical environments.
2. With sequential read performance of 1200 MB/s, this drive accelerates large-file access, reducing backup, restore, and analytics data-loading windows in enterprise workflows.
3. Delivering 190,000 random read IOPS, it sustains fast response under highly fragmented, transaction-heavy workloads such as virtualization, databases, and online services.
4. Rated for 1 DWPD and built on Samsung V-NAND 3bit MLC (TLC), it offers a balanced endurance profile for mixed-use enterprise applications that need dependable daily write capacity at scale.
5. A typical latency of 110 µs helps minimize storage wait time, improving application responsiveness and supporting more predictable QoS in shared infrastructure.
Reference capacities in the same series for MPN MZILS1T9HCHP-000D4 (1.92TB): Lower capacity: 960GB Higher capacity: 3.84TB Typical enterprise-class performance positioning: 960GB: Similar sequential read/write and random IOPS to 1.92TB 1.92TB: Similar sequential read/write and random IOPS to adjacent capacities 3.84TB: Similar sequential read/write and random IOPS to 1.92TB Capacity positioning analysis: At 1.92TB, this SSD sits in the sweet spot of the family. Compared with the 960GB option, it gives much better headroom for OS images, logs, metadata, and steady data growth, reducing early capacity pressure. Compared with 3.84TB, it usually delivers the best balance of acquisition cost, usable capacity, and enterprise-grade performance consistency. This makes it a strong fit for mid-scale virtualization clusters, such as shared boot and application storage for about 40 to 60 general-purpose virtual machines.
Q: Is MZILS1T9HCHP-000D4 suitable for a write-heavy database server?
A: It can support mixed-use database workloads, but for truly write-heavy database servers, 1 DWPD is moderate. We generally recommend higher-endurance SSDs if sustained intensive write activity is expected.
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 1.92TB drive write per day over its warranty period, aligned with its 3504 TBW endurance specification.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP is critical because it helps preserve in-flight data and metadata during unexpected outages, reducing corruption risk and improving enterprise storage reliability.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for database and latency-sensitive workloads, as it balances performance and redundancy. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered.