February 9, 20251 yr Hi folks, so recently I moved from Stablebit to Unraid and whereas before all my drives would be connected to the motherboard of my main machine now they are connected to another one over the network. My question is the following: I assume that if my modem has a 2.5gbps port and the Ethernet port on the server is the same speed, that would be the bottleneck when transferring over the network? So the speed will be around 250 mb/s during these kind of file operations? In such cases there would be no point in using an NVME drive as cache if my Exos drives can already reach these speeds or almost? Except maybe for operations performed directly on the server, for instance downloading multiple Linux ISOs on qbittorrent at once and such there would be no benefit in the cases. Maybe if someone else have examples. When I say this I don't take into consideration the overhead of parity yet because I am still in the process of moving my files and I was advised to add the parity drive for calculation only at the end of the process to save some time. So maybe when parity will be active I could benefit from the use of an NVME drive? If I am not going to win a lot by using a high speed drive as cache I'd rather use it for games and such but if someone have ideas I am ready to hear. Also is there any other way to connect Unraid to a machine without using a network cable such as e-sata? Thanks again for any reply.
February 9, 20251 yr Community Expert 25 minutes ago, MonadProxy said: So maybe when parity will be active I could benefit from the use of an NVME drive SSDs in the parity array cannot be trimmed, and can only be written at parity speed.
February 9, 20251 yr Author I meant NVME as cache drive, my bad. Since parity would slow the drives a little I thought maybe then the network won't be the bottle neck anymore and the NVME drive could be put to use to maximize the speeds reached over the network.
February 9, 20251 yr Community Expert When you are finished with initial data transfer and won't be writing more than cache can hold daily. 7 minutes ago, MonadProxy said: NVME drive could be put to use to maximize the speeds reached over the network. That was the original purpose of cache. There are some advantages to keeping some kinds of data permanently on cache or other pool separate from the parity array. Docker/VM configurations for example.
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