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| Brand | Samsung |
|---|---|
| Model | PM1633a |
| 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 | 1200 MB/s |
|---|---|
| Sequential Write | 1000 MB/s |
| Random Read IOPS | 200000 |
| Random Write IOPS | 32000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS7T6HCHP-00005 |
|---|
Compared with MZILS7T6HCHP-00005, the PM1633a MZILS7T6HMLS-000D4 delivers a stronger next-generation value point by combining 7.68 TB of usable capacity with 14,016 TBW endurance in a proven 12Gb/s SAS platform, giving architects better rack-level storage density and longer service life per drive. Its Samsung V-NAND 3D TLC design sustains up to 1200/1000 MB/s and 200,000/32,000 IOPS, making it a precise fit for read-centric virtualization, scale-out storage, and database workloads that need enterprise SAS reliability with lower capacity-per-IO bottlenecks than earlier PM1633-class deployments.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZILS7T6HMLS-000D4 is designed to sustain heavy daily write activity across its service life, making it well suited for demanding enterprise workloads. In typical server or system-disk usage, this level of endurance provides long-term peace of mind and is more than sufficient to support many years of stable operation without endurance becoming a practical concern. For enterprise reliability, built-in power loss protection (PLP) helps preserve in-flight data and protects metadata integrity if power is interrupted unexpectedly, reducing the risk of corruption or incomplete writes. Its ultra-low UBER of 1.0E-17, together with a 2 million hour MTBF, indicates very strong data integrity and dependable operation, giving procurement teams confidence in the drive’s suitability for business-critical environments.
1. The SAS 12Gb/s interface, paired with strong sequential read throughput, enables predictable high-speed streaming for databases, backup targets, and virtualization clusters without the integration risk of newer bus standards.
2. With up to 1200 MB/s sequential reads, this drive accelerates large-block workloads such as analytics scans, media repositories, and bulk data restore operations.
3. Delivering 200,000K random-read IOPS, it sustains fast response under heavily concurrent access patterns, making it well suited for OLTP databases, VM farms, and metadata-intensive enterprise applications.
4. Rated for 1 DWPD, the drive is tuned for mixed-use enterprise environments where daily rewrites must stay reliable across the full service life without overpaying for extreme write endurance.
5. Samsung V-NAND 3D TLC, combined with a typical latency of 110 µs, provides a practical balance of density, cost efficiency, and consistently responsive access for latency-sensitive business systems.
Lower capacity: 3.84 TB Higher capacity: 15.36 TB The 7.68 TB model sits in the sweet spot of this SSD family. Compared with the 3.84 TB version, it gives much better headroom for dataset growth, VM sprawl, and longer refresh cycles without changing the familiar enterprise-level read/write and random IOPS profile. Compared with the 15.36 TB option, it delivers a more balanced mix of acquisition cost, usable capacity, and steady performance, making it easier to scale efficiently. It is especially well suited for mid-sized virtualization clusters, mixed database nodes, or dense read-intensive application servers.
Q: Is MZILS7T6HMLS-000D4 suitable for a write-heavy database server?
A: MZILS7T6HMLS-000D4 is better suited for mixed-use enterprise workloads rather than highly write-intensive databases. With 1 DWPD and 3D TLC NAND, it supports steady writes, but heavier write profiles may require higher-endurance models.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated for 1 DWPD, meaning it can sustain one full 7.68 TB drive write per day throughout its warranty period, aligned with its total endurance rating of 14,016 TBW.
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 protects metadata during unexpected outages, which is critical for enterprise systems requiring data integrity, consistency, and recovery reliability.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on workload priorities. RAID 10 is typically preferred for databases needing strong performance and redundancy, while RAID 5 or 6 may suit capacity-focused environments better.