MZ-77E250BW Samsung 870 EVO MZ-77E250 250GB SATA 2.5" SSD

Enterprise 2.5in SATA SSD for consistent OS and cache performance with the MZ-77E250BW

The MZ-77E250BW is a 2.5in internal SATA 6Gb/s SSD designed for stable boot, cache, and tiering roles in rack servers, edge appliances, and storage nodes where predictable latency matters more than peak PCIe bandwidth. It integrates a DRAM-backed flash translation layer to sustain responsive metadata handling and reduce write amplification under mixed read/write duty cycles.

Built on Samsung’s 870 EVO architecture, the MZ-77E250BW pairs MLC NAND with a 512MB DRAM cache and TRIM support to maintain consistent throughput over long service intervals. With sequential performance up to 560 MB/s read and 530 MB/s write and 4K random up to 98K/88K IOPS, it aligns well with OS volumes, log partitions, and read-optimised caching where SATA backplanes and legacy controllers remain standard. Security features include AES-256 hardware encryption with SED support, enabling policy-driven data protection without host CPU overhead.

Why Choose the MZ-77E250BW?

The MZ-77E250BW provides an efficient density-to-performance profile for fleets that require large numbers of reliable SATA boot devices. It supports scalable, repeatable deployment across homogeneous server builds, while endurance (150 TBW, 0.3 DWPD for 5 years) and a 1.5M-hour MTBF help reduce operational risk in always-on environments.

Samsung engineering emphasises controller-to-NAND optimisation, power discipline, and validation against enterprise integration expectations. The platform’s low idle draw and consistent thermal behaviour support modern data centre standards focused on predictable performance per watt and serviceability across long lifecycle deployments.

Key Applications:

• Server OS and hypervisor boot volumes
• Read-optimised cache and tiering
• Edge appliances and security gateways
• Log, metadata, and journaling partitions

At Happyware - Server Hardware you benefit from Bulk Order Discount for standardising the MZ-77E250BW across server builds, and our 24/7 Customer Service to support procurement alignment, compatibility questions, and time-critical rollout schedules.