Model: QDA-SA3-4PCS
from $209
Designed specifically for the QNAP dual-controller all-flash array Enterprise ZFS NAS (ES2486dc), the QDA-SA3 2.5" SAS to SATA III Drive Adapter allows the use of a compatible 2.5" SATA III drive in a 2.5" SAS disk tray model TRAY-25-NK-BLK04. With a maximum throughput of 6 Gb/s, each of the adapters in this 4-pack supports SAS dual porting for redundancy, which helps to enhance reliability and performance by eliminating single points of failure. This benefit is provided to SATA drives when installed into a dual-controller all-flash Enterprise ZFS NAS using the QDA-SA3 adapter.
Buy based on the software ecosystem (e.g. Available from $209.
NAS (Network Attached Storage) devices run 24/7, making power consumption a steady, though low, cost. The real ongoing expense is replacing hard drives as they fail or filling empty bays to expand storage.
Common Failure Modes
Hard drive failure is the most common issue, which is why NAS uses RAID redundancy to prevent data loss. Fan failures and power brick deaths are the primary hardware issues for the enclosure itself.
Buy based on the software ecosystem (e.g., Synology DSM) and the number of drive bays you need for redundancy and future expansion. CPU power matters greatly if you plan to run media servers like Plex.
The NAS enclosure itself can last a decade. However, the hard drives inside are consumable and typically need replacing every few years depending on workload.
The QNAP QDA-SA3 2.5" SAS to SATA III Drive Adapter for Dual-Controller All-Flash Enterprise ZFS NAS (4-Pack) is available at bhphoto, starting at $209.
NAS (Network Attached Storage) devices run 24/7, making power consumption a steady, though low, cost. The real ongoing expense is replacing hard drives as they fail or filling empty bays to expand storage.
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