Samsung MZILS3T8HMLH 3.84TB PM1633 SAS 12G 2.5-inch Read Intensive Solid State Drive

General

Brand	Samsung
Model	PM1633
Capacity	3.84TB
Usage Class	Read Intensive

Interface

Host Interface	SAS 12G
Total Interface Bandwidth	12 Gb/s

Physical Dimension

Form Factor	2.5-inch

Flash & Endurance

NAND Flash	Samsung V-NAND TLC
Drive Writes Per Day	1
Total Bytes Written	7008 TBW

Performance

Sequential Read	1100 MB/s
Sequential Write	1000 MB/s
Random Read IOPS	160000
Random Write IOPS	18000
Average Latency	110 μs

Reliability

Mean Time Between Failures	2 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	Yes

Part Number

MPN	MZILS3T8HCJM

Engineer's Note

Compared with the earlier MZILS3T8HCJM, the Samsung PM1633 MZILS3T8HMLH delivers a stronger balance of endurance and steady-state performance, combining 1 DWPD and 7,008 TBW with 1,100/1,000 MB/s throughput and up to 160K/18K random IOPS over SAS 12G. Its 3.84TB Samsung V-NAND TLC design makes it a particularly strong fit for enterprise read-centric virtualization, database, and scale-out storage tiers that need higher usable capacity per drive without giving up SAS reliability or predictable latency.

Endurance & Reliability

With an endurance rating of 7008 TBW, the MZILS3T8HMLH can sustain a total of 7,008 terabytes of writes over its service life, which is far beyond the write volume of typical OS, application, and general server boot workloads. In practical terms, for use as a system or read-heavy enterprise drive, this level of endurance provides long-term peace of mind and is more than sufficient for many years of normal operation. 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 downtime. Its UBER rating of 1.0E-17, together with a 2 million hour MTBF, indicates extremely strong read reliability and overall dependability for business-critical environments.

Technical Specs & Insights

1. The SAS 12G interface and strong sequential read bandwidth make this drive a dependable choice for enterprise storage arrays that need fast, predictable streaming of large databases, backups, and virtual machine images.
2. Its random read capability accelerates access to heavily fragmented data, helping transactional systems and virtualized workloads serve more users with consistently quicker response times.
3. A 1 DWPD endurance profile fits mixed-read enterprise deployments well, giving IT teams confidence in sustained daily rewriting without overpaying for unnecessary write headroom.
4. Samsung V-NAND TLC balances density, efficiency, and reliability, enabling cost-effective scaling for business-critical storage environments without sacrificing flash performance consistency.
5. The low typical latency helps reduce storage wait time at the application layer, improving responsiveness for latency-sensitive workloads such as OLTP, VDI, and real-time analytics.

Capacity Sweet

Lower capacity reference: 1.92TB Higher capacity reference: 7.68TB In this SSD family, 3.84TB is the sweet-spot capacity. Compared with 1.92TB, it gives much better headroom for dataset growth, overprovisioning flexibility, and longer refresh cycles without changing the platform footprint. Compared with 7.68TB, it usually delivers the best balance of acquisition cost, usable capacity, and enterprise-grade performance consistency, since sequential throughput and random IOPS are typically very close across these capacities. It is well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for around 40 to 60 general-purpose virtual machines.

FAQ