Synology DS1621+ NAS Server

Product Information

I’ve used this 1821+ since the review, TC. and it’s been quiet. But, that depends on your expectations, it’s not silent. Reply Hardware specifications: Synology DS1821+ vs DS1621+ Synology DS1821+ vs DS1621+: Hardware upgrades are (almost) a must the number of connections that can be maintained when the recommended number of hosted files was reached) Thecus is not bad, Joe, but still lightyears behind Synology. The hardware will likely work though I’m not sure if the RAM is supported. The SSDs will only work as cache — you need Synology SSDs for storage. Reply So on the Xfinity/Comcast IPv6 thing. Before three days ago when “they changed things” during an 0200-0430MST (local) outage… IPv6 worked.

User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to insertion in a system. Temperature settings and temperature readings are all communicated to/from the DS1621 over a simple two–wire serial interface. Synology SNV3400 series M.2 NVMe SSD drives can be installed through the built-in M.2 slots to enable SSD caching or create SSD storage pools. Drives are sold separately.The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time. Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermal sensitive system

The DS1621+is pretty efficient (we peaked at 77 watts with drives, but mostly used under 40 watts) so the fans did not have to work too hard, but a decent drive amount of noise escapes the NAS. 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+ 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. After the DSM re-install process, which took about 10 minutes, all of the settings, including the caching, of the DS1621+ were ported over to the DS1821+ with no issue. Upgrade Synology systems with faster networking speeds. Thorough validation ensures seamless integration with DSM.And that worked with all the upgrades, too. In my case, I tried the migration with all the parts mentioned above installed on the DS1621+ then moved them, together with the hard drives, to the DS1821+. Extend the standard 3-year hardware warranty of your DS1621+ with 2 more years of Synology-certified support and premium services that help you recover faster in the event of disaster. The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, T OUT is active when the temperature of the device exceeds a user-defined temperature T H. The output remains active until the temperature drops below user defined temperature T L, allowing for any hysteresis necessary. The second option is the least expensive but is good enough for most cases. Synology DS1821+ vs DS1621+: Here are my servers upgraded to 10Gbps using two different dual PCIe cards.