Types of NAS Models
Whether you go with QNAP or Synology, both brands offer a wide range of NAS devices that cover almost all budgets and use cases. In general, we think QNAP offers slightly more value as well as more connectivity options in their mid-to-high end models that are not found at Synology. QNAP's high-end models also offer increased configuration options - in particular, they tend to offer more PCIe expansion slots.
However, where Synology tends to outperform QNAP is in RAID configurations. In addition to the usual RAID configurations you can normally find in a NAS, Synology takes it one step further and offers an innovative RAID system, the Synology Hybrid RAID (SHR). SHR allows for increased flexibility in your RAID configurations, optimising capacity and performance in comparison to standard RAID systems.
When choosing a NAS, it's also important to consider what number of drive bays to go for. We'll run-down some of the common configurations below.
1-Bay Models
Single-bay NAS models are a decent option if all you need is simple storage. That being said, they are not too popular among enthusiasts and power-users since they are not capable of mirroring. You cannot setup a RAID array using a single-bay NAS, as this requires having at least two hard disks. Hence, a single-bay NAS is great for storing family files and documents, but not for backing up files.
2-Bay Models
Dual-bay NAS models are one of the more popular configurations for a NAS. Since they can attach two hard drives, 2-bay NAS models can use mirroring and RAID configurations to backup data in the event of unexpected data loss. Thus, if a drive fails or corrupts data, you can have a backup stored on another drive.
4-Bay Models
NAS models with 4-bays are generally used for home and small business users who want to backup their data securely with RAID configurations. You will have ample space for your media, files and documents, while protecting your data against drive failure with a RAID configuration.