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| Brand | Samsung |
|---|---|
| Model | PM1633a |
| Capacity | 480 GB |
| 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 3rd-Gen 48-layer 3D TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 876 TBW |
| Sequential Read | 1350 MB/s |
|---|---|
| Sequential Write | 570 MB/s |
| Random Read IOPS | 160000 |
| Random Write IOPS | 27000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-7KE2T0 |
|---|
The Samsung PM1633a (MZ-ILS480N) is a strong fit for read-centric enterprise SAS tiers, combining 12.0 Gbps dual-port connectivity with 3rd-Gen 48-layer V-NAND to deliver 1350/570 MB/s and up to 160,000/27,000 IOPS in a compact 480 GB footprint. Compared with the previous-generation MZ-7KE2T0, it brings a newer 48-layer V-NAND architecture and a native 12 Gb SAS platform, giving architects a clear generational upgrade in interface bandwidth, flash density, and sustained enterprise reliability for virtualized infrastructure and database read acceleration.
With an endurance rating of 876 TBW and 1 DWPD, the MZ-ILS480N is designed to comfortably handle typical enterprise and commercial workloads over its service life. In practical terms, for common OS boot, application, and read-intensive usage, this level of endurance is more than sufficient for long-term stable operation and can be used as a system drive with confidence. For enterprise reliability, the MZ-ILS480N includes power loss protection (PLP), which helps preserve in-flight data and protects metadata integrity during unexpected power interruptions. Its UBER of 1.0E-17, together with a 2 million hour MTBF, indicates a very low probability of uncorrectable bit errors and supports dependable data integrity for business-critical environments.
1. The SAS interface provides dual-port enterprise connectivity and high-availability paths, making this drive a strong fit for mission-critical servers, storage arrays, and failover-sensitive workloads.
2. Its strong sequential read performance accelerates bulk data movement, helping analytics platforms, backup systems, and media repositories shorten large-file access and ingestion time.
3. The high random read capability enables fast response under heavily concurrent small-block access, which is ideal for virtualized environments, OLTP databases, and metadata-intensive applications.
4. A one-drive-write-per-day endurance profile gives enterprises a practical balance of lifespan and cost for mainstream mixed-read/write deployments such as virtualization clusters and business application servers.
5. Built with Samsung third-generation V-NAND 3D TLC and low typical latency, the drive combines mature flash efficiency with consistently quick access times for predictable application responsiveness in enterprise workloads.
Reference capacities in the same series: Lower capacity: 240 GB Higher capacity: 960 GB At 480 GB, the MZ-ILS480N sits in the sweet spot of the family. Compared with the 240 GB model, it provides much better headroom for OS images, application binaries, logs, and growth over the service life, reducing early capacity pressure. Compared with the 960 GB option, it keeps acquisition cost and power budget more controlled while delivering essentially the same enterprise-class read/write and IOPS behavior. This makes 480 GB especially well suited for mid-density virtualization hosts, compact database nodes, or cache-tier deployment in branch and edge infrastructure.
Q: Is MZ-ILS480N suitable for a write-heavy database server?
A: MZ-ILS480N can support moderate database workloads, but with 1 DWPD it is better suited for mixed-use rather than highly write-intensive database servers with sustained heavy daily write activity.
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 handle one full 480 GB drive write per day throughout its warranty period, aligned with its 876 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 metadata during unexpected outages, which is critical for maintaining data integrity and reducing corruption risk in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID 1, RAID 10, or RAID 5 can be selected depending on performance and redundancy goals. For database and business-critical workloads, RAID 10 is typically the preferred recommendation.