02-25-2021, 03:06 PM
Infortrend has always been a budget option, but you are right, warranties and services cost a lot. There are more professional options from Qsan, but you might also pay quite a lot for services. You can have a look here: https://www.span.com/search/active/-QsanBut Qnap active-active models are quite impressive. They do stand out with their software just like Synology with their dual controller models like UC3200.Qnap is more configurable and you will find better hardware in Qnap. Synology is easier to use and they might have more of their own created software which works more symbiotic with the hardware. Here is one of their trade show: https://www.youtube.com/watch?v=PCwv6n1O4FMHere is Qnap made tests maybe you find them useful: https://www.qnap.com/en-uk/product_x_performance/product.php?type=10&II=396Also, Storage review guys have made some tests on a similar model:https://www.storagereview.com/review/qnap-es1640dc-nas-reviewQnap and Synology are the most innovative NAS brands out there today. They add more functions and fixes every day. They also have support centres around the world. Both of these will make a good purchase.Regards to cache- it only keeps a copy of the most frequently accessed data. Failure will not damage your volume. In fact, SSD cache can also be set up as RAID to keep this going too.I hope this helps.