Synology DS1621+ NAS Server

Product Information

That amount is enough for general usage, but a memory upgrade is a must if you want to get the most out of the server. Synology hardware upgrades: Here's my new Synology DS1821+ and the upgrade parts, including a 10Gbps PCIe add-on card, a 32GB DDR4 RAM kit, and two 1.92GB Seagate IronWolf NVMe SSDs. The DS1621+ comes populated with 4GB of ECC DDR4 in one slot of two slots, and can support up to 32GB. Despite the higher price, it’s great to see the ECC RAM used for improved protection against data corruption. It's even older than that -- Synology first announced it in 2020. But it's still going to be the latest Synology 8-bay NAS for homes and SMBs for a while -- Synology likely won't release its replacement this year.

Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored. More caution is needed when selecting a 10GbE adapter, however, as Synology is rapidly shrinking its third-party hardware compatibility list and focusing more on its own solutions. When we installed the same Emulex dual-port 10GbE adapter we’d used to test the DS1618+, the DS1621+ hung during the boot phase and would only accept a dual-port Intel X520 10GbE adapter. Synology DiskStation DS1621+ review: 10GbE performance Synology’s productivity apps include the Office suite which is offered as a free alternative to Microsoft 365. It works with the Drive app to provide a central location for users to create documents, spreadsheets and presentations, collaborate on them together with others and keep them secure. By the way, you should only cache a hard drive volume. If you use SATA SSDs for storage, caching is unnecessary. On top of that, if you decide to cache, it's also a better idea to upgrade the server's network to 10Gbps -- more below -- or at least use its Link Aggregation feature to get a 2Gbps connection out of its two Gigabit ports. You also get three USB 3.0 ports (one on the front) plus dual eSATAs. The latter is used for adding external drive bay expansions, and an extra 16 bays and 108TB total is possible. The NAS CPU itself has no fan on the heatsink, but the DS1621+ has dual rear 92mm fans that provide decent airflow, and keep your drive array from getting too hot.If you're using the DS1621+ and want to upgrade to the DS1821+ to take advantage of the two extra drive bays, the process is the same as when you migrate from one Synology server to another. For performance testing, we installed four of Toshiba’s new air-filled 4TB MG08-D series of hard disks. These are aimed specifically at business users that are more focused on cost and reliability, and don’t need the massive capacities of helium-filled spinners. To test caching efficacy, we fitted two 480GB Kingston DC1000B enterprise-class M.2 NVMe SSDs and although neither these nor the Toshiba drives feature on Synology’s compatibility list, the DSM software allowed us to use them.

If you're mulling over the two, that is the only point you should consider. Synology DS1821+ vs DS1621+: Hardware specifications Model In our testing we saw performance for random access improve up to 2.1x using SSD caching, but for most uses it was a lot lower. The biggest real world difference was when running multiple virtual machines, which were a lot more responsive with SSD caching. We also tested with 16GB of RAM, which helped a lot for memory heavy applications. The DS1621+ has a PCIe slot, which supports a range of 10GbE networking cards. (Image credit: Future)Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermal sensitive system