03-14-2025, 01:39 PM
Good setup with the 1621xs+! For a backup NAS, staying with Synology makes sense, and with your budget ($600-$900), here’s how the models stack up:
DS423+ – Affordable 4-bay option, but lacks ECC memory. If backups are the only use case, it could work, but it’s a bit underpowered compared to your main NAS.
DS923+ – More powerful than the DS423+, supports NVMe storage pools, but still no ECC RAM.
DS1522+ – Solid balance of performance and expandability. Having a 5th bay gives you flexibility for future storage growth. Also has ECC memory, which is great for reliability.
DS1621+ – Best match for your main NAS. ECC RAM, great long-term investment, and more storage flexibility. If you want to mirror your 1621xs+ more closely, this is the ideal pick.
Since you already have WD Red drives (14TB, 8TB x2, 6TB), a 5-bay NAS (DS1522+) might be a better fit to make use of them effectively without feeling limited later. If you can stretch the budget a bit, the DS1621+ is the most future-proof option.
DS423+ – Affordable 4-bay option, but lacks ECC memory. If backups are the only use case, it could work, but it’s a bit underpowered compared to your main NAS.
DS923+ – More powerful than the DS423+, supports NVMe storage pools, but still no ECC RAM.
DS1522+ – Solid balance of performance and expandability. Having a 5th bay gives you flexibility for future storage growth. Also has ECC memory, which is great for reliability.
DS1621+ – Best match for your main NAS. ECC RAM, great long-term investment, and more storage flexibility. If you want to mirror your 1621xs+ more closely, this is the ideal pick.
Since you already have WD Red drives (14TB, 8TB x2, 6TB), a 5-bay NAS (DS1522+) might be a better fit to make use of them effectively without feeling limited later. If you can stretch the budget a bit, the DS1621+ is the most future-proof option.