March 26, 20215 yr I've got an hpe gen10+. It has 4 drive bays and 1 PCIe slot. The PCIe is populated with a GPU for hw transcoding. I am current using the server mainly as a docker/VM host with bulk media storage on a Synology. Eyeing some 16tb exos drives and considering buying 4 for the server but then I lose drive bays for my Unraid cache and VM/docker storage. The server has two usb 3.2 gen 2 ports. Would I be nuts to consider buying two external gen 2 usb SSDs to run my cache pool? Looks like near nvme speeds can be had with these but don't know about reliability
March 27, 20215 yr 56 minutes ago, aberg83 said: Would I be nuts to consider buying two external gen 2 usb Yes. USB protocol is not nearly robust enough. Do you have an NVME slot?
March 27, 20215 yr Community Expert If you must use USB storage it is better (if possible) to use it as an Unassigned Device as the UD plugin is better at handling devices that can disconnect/reconnect unexpectedly.
September 29, 20214 yr Author If this were used only for docker, would it be a concern? I have an HPE gen 10 plus with only 4 storage bays and the single PCIe slot will be populated with my GPU for HW transcoding. Therefore, no additional drive slots other than to use USB. Luckily it has two gen 3.2 slots on the front. I would just use a single USB SSD for docker on an unassigned device and backup weekly to the array. People use these as OS boot drives, so I'm thinking it would be okay. Thoughts? Edited September 29, 20214 yr by aberg83
September 29, 20214 yr Community Expert I think if you use it as an Unassigned Device then you would probably be OK as the UD plugin can handle devices disconnecting and then reconnecting (not atypical with USB drives). If used as a cache (pool) drive in the UnRaid sense then I suspect you could encounter problems but you could try it to find out. The problem with using it as a UD device is that it cannot then participate in User Shares - not sure if think this will matter for you?
September 29, 20214 yr Author 4 minutes ago, itimpi said: The problem with using it as a UD device is that it cannot then participate in User Shares - not sure if think this will matter for you? This wouldn't be an issue for me. I may give this a go.
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