November 3, 20196 yr Hi! Im getting about 55mbs when using SSD as a cache when transferring from my linux machine to unraid. Writing directly to the ssd using "unassigned plugin" yield about 70-80mbs only. both computers are connected with 1gb connection. The unraid build is old hardware: I5-650 cpu, 8gb ddr3 ram. IronWolf pro 4tb X 2 + 1 Sandisk 250gb ssd. Any tips regarding how to debug it? (im new!)
November 3, 20196 yr Community Expert Go to Tools - Diagnostics and attach the complete diagnostics zip file to your NEXT post.
November 3, 20196 yr Author 35 minutes ago, trurl said: Go to Tools - Diagnostics and attach the complete diagnostics zip file to your NEXT post. How do I hide the encryption key from the diagnostics report?
November 3, 20196 yr Community Expert 10 minutes ago, Aviv said: How do I hide the encryption key from the diagnostics report? I've never heard of the encryption key appearing in the diagnostics. Are you sure it's there?
November 3, 20196 yr 1 hour ago, Aviv said: How do I hide the encryption key from the diagnostics report? The encryption key is NEVER part of diagnostics
November 4, 20196 yr Author I believe i got it all wrong.. The transfer speed show from my linux machine is in MiB's, eg I believe that 56MiB's is about 400Mbps. so, my bad. all good. right? Edited November 4, 20196 yr by Aviv
November 4, 20196 yr Community Expert 31 minutes ago, Aviv said: I believe i got it all wrong.. The transfer speed show from my linux machine is in Mib's, eg I believe that 56Mib's is about 400Mbps. so, my bad. all good. right? Normally when quoting speeds it is conventional to use a capital 'B' when you mean bytes and a lower case 'b' when you mean bits. That helps with deciding what units one is talking about.
November 4, 20196 yr Author Sorry, im new at this:) Updated my post. im getting 56MIB/s. I think its ok. as this is the speed of a sata ssd.
November 4, 20196 yr Community Expert 8 minutes ago, Aviv said: I think its ok. as this is the speed of a sata ssd. That sounds very slow for a SSD. I would expect it to be more like 560 MB/s.
November 4, 20196 yr Author 56MiB/s is about 469.8 Mbps. my ssd model supports Sequential Write (up to) 350MB/s (SanDisk_SSD_PLUS_240GB). So i think im good. but still not sure i get the numbers right.
November 4, 20196 yr 2 hours ago, Aviv said: 56MiB/s is about 469.8 Mbps. my ssd model supports Sequential Write (up to) 350MB/s (SanDisk_SSD_PLUS_240GB). So i think im good. but still not sure i get the numbers right. In case you are still confused about the unit. MB/s = megabyte/s = 1 million bytes/s MiB/s = Mebibyte/s = 1,048,576 bytes/s 56MiB/s can be a reasonable speed if your data is not too sequential in nature. It would be certainly too slow if you data is highly sequential e.g. a large ISO image. So it depends. Note though that since you are transferring over gigabit network, your max speed will be limited to 1Gb/s = 125MB/s (8 bits = 1 byte). So you will never get anywhere close to 350MB/s sequential unless there are multiple simultaneous independently connected clients.
Archived
This topic is now archived and is closed to further replies.