Build a Thunderbolt 3 / USB-C direct attached storage which supports both M.2 NVMe SSD (x2) via PCIe and spinning HDDs (no more than x6) via SATA interface. I prefer for this to be rack mounted since I already have a server rack if it’s too loud but a small standalone PC case is also fine.
As per my understanding this probably just needs a host thunderbolt / usb-c interface with PCIe card and SATA connectors. And of course a proper case with enough space to mount all the drives and
There are many NAS build guides out there but unfortunately very little information available for building a DAS.
I will connect this DAS to a Mac Mini. Will be using the macOS Disk Utility to setup the two NVMe SSDs in RAID 0 where I will have some faster read access data like Apple Caching Server data for example.
And have a backup software which will copy some of the other data from SSDs to HDDs which will be configured in RAID 1. Other copy of backup will happen in cloud as well.
Computer Science engineer. Will be mainly using this storage as my personal cloud backup and for my media library.
I have built gaming PC’s before but never build a DAS. I guess this needs some kind of USB-C host interface without any CPU or RAM maybe.
Example products that I have looked at are:
OWC Flex 1U4 - a rack mount usb-c DAS which has 4 bays for HDD / SDD or even M.2 drive using their own shuttle one (U.2 bay). It also has one empty PCIe slot which I can use to mount a dual m.2 drive pice card
Promise Pegasus R12 - this is a newly launched product which also supports automatic M.2 NVMe ssd caching using it’s own software PromiseRAID.
I would like to build something similar if at it's possible and worth doing a custom build as oppose to some of those consumer products which tend t be expensive!.
Thank you in advance!