Intel Nuc8, 512GB SSD with Rock installed, 8GB ram, 2TB nvme SSD as internal storage.
I have a 1.8TB library on a NAS, I want to move to the new 2TB internal storage. Copying via network is slow, thus I copied some libraries to a 1TB Lenovo external SSD, and then connect to NUC8 via USB, but the write speed is terrible, only 2-3mb/s. Why writing from external USB SSD to internal storage is so slow.
I checked some other posts, but I didn’t see a solution. Thanks for any help in advance.
I would suspect the USB cable. What type is it? I have an external USB-C XQD card reader. I was getting 300MB/s with the original cable, but that’s too short, so I tried another cable and was only getting 36MB/s.
@marian, current cable is very short too, maybe about 15cm long only. the usb cable is type-c (connect to nvme ssd enclosure) to type-A (computer). I will give another cable a try. I have usb-c to usb-c too. Will test tomorrow and see if it make any different.
Assuming you’ve connected to your ROCK using the network share from another computer, even though both drives are on the ROCK, the files will still be being transferred to your computer and back, so 2 network hops.
I don’t believe there is a way to copy to ROCK without going through the network.
The best you can do is to make sure both devices are connect via an Ethernet cable to the same switch/hub/router. Depending on the devices you will get the max speed of the Ethernet.
Connecting via 1G Ethernet I saw a sustained rate of 100M a second between an 8i5 and a 2014 Mac mini.
Of course with a big library this can still take a while.
@GregD the NAS and the NUC are connected to the same hub indeed.
Maybe you are right about the 2 network hops, but I am curious why there are so much differences for following two scenarios:
Connect external SSD to the NAS via USB, then on Windows computer, use drag and drop to copy files from NAS to external SSD. The speed is very fast.
Connet external SSD to the Rock, then on the same Windows computer, use drag and drop to copy files from external SSD to Rock’s internal storage, the speed is just 2-3 mb/s, that is very slow.
Above screnarios are both connected via USB, also both copy actions are operated on the same Windows computer, but the speed difference is huge.
Got to say, for a long, long time I found USB to be a crappy and unreliable transport for large scale data storage, but with the advent of USB 3.x my views have changed. My Roon server is now an ASRock DeskMeet with 32GB ECC RAM + Ryzen 4750G CPU and a USB connected QNAP TR-002 housing 2 drives. I can read and write data at the same rate as I could using SATA 3 in the past and transferring files across the network at line speed is a breeze. Still, I look forward to the day large scale NVME storage on PCIE 5 is an affordable reality.
I’m a bit confused here. How do you administer ROCK? Does it have a web interface? If you use that interface, would you be able to copy without going through any shares?
You don’t; for all intents, it’s a appliance. The web interface provides system status information, and options to restart and reboot the NUC or Roon server.
Thanks. (As basic as it is, it’s still administration.) Now, if you have a USB disk connected to the NAS and use a computer to copy files from NAS to the disk, how is that only one network hop?
The OP initially copied from NAS to a Windows Laptop (with attached USB drive) and then added the drive to the NUC, but ROCK exposes both internal drive and USB drives as network shares.
Originally I tried copying files from NAS to Rock internal storage (via windows), and the speed it super slow, thus I tried to use USB external SSD as a media, hoping it will shorten the time.
I wish Rock has SSH access, so that I can issue scp command to copy files directly, rather than using Windows.
guess I wil use external usb-c drive to store all the files rather than internal storage.
Sounds like the bottleneck here could be whatever hardware you’re using as far as the enclosure/hub is concerned. Can you list manufacturers/models/pics of what you’re using?
The bottleneck is that the only way to get files to the internal ROCK NUC drive is through a network copy. There is no direct way to copy data on a USB drive to the internal drive with a ROCK NUC (or Nucleus).
The easiest solution is to not use the internal drive. To copy the NAS music to an exFAT formatted USB drive. And then plug that drive into the NUC.
Or, don’t use ROCK and drop Linux (or Windows) with RoonServer on the NUC instead. Then you have the full availability of OS file management tools.