Raspberry Pi 4 & Samsung T5 SSD = Extreme Fast Pi --> cached read 7.2GBit/s :D (with instructions)
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#Intro Hey guys, so I had some issues with the SD-Card speed of the Pi 4... I was hoping for a bit faster SD-Card Slot, which was not the case at all. So I added a Samsung T5 1TB SSD to it and moved the filesystem to the T5. Why? Because of 900MB/s timing cached reads: #Speedtest (yep, thats Megabytes - not Megabits) ##With cache > pi@pi4t5:~ $ sudo hdparm -tT /dev/sda2 > /dev/sda2: > Timing cached reads: 1798 MB in 2.00 seconds = 899.31 MB/sec > Timing buffered disk reads: 1078 MB in 3.00 seconds = 358.84 MB/sec ##Without cache > pi@pi4t5:~ $ sudo hdparm -tT --direct /dev/sda2 > /dev/sda2: > Timing O_DIRECT cached reads: 552 MB in 2.01 seconds = 275.29 MB/sec > Timing O_DIRECT disk reads: 862 MB in 3.00 seconds = 287.21 MB/sec # Installation Instructions Don't have any clue on how to set this up? Keep cool, its easy. First of all, make sure you got a Pi 4 (because of USB3) and a Samsung T5 (size doesnt matter in this case). Keep a eye on different Samsung T5 sellers, because the price jumps around like bitcoin tickers ^^. If you got it, follow those steps: ## 1. Throw that STL into your printer, as it takes longer to print than you need to set up the pi&ssd ## 2. Just follow [these instructions](https://www.raspberrypi.org/forums/viewtopic.php?t=44177). It does not take as long as *paulv* wrote in 2013.... I did it in less than 10 minutes easily. ## 3. You propably want to act as a linux user on the SSD. So optionally you could [create a new user and create his home directory on /mnt/my_data/home/username](https://stackoverflow.com/a/20797852) Thats it. Super easy. Now you got a SUPERFAST Pi. Keep an eye on the CPU temperature. It rises way faster if you give the Pi more bits to eat... I highly recommend some active cooling. #FAQ ##Is it working without any issues? Yep. No problems so far. I was massivly using the T5 for some hours now, and I did not have any issues. The T5 is getting warm. But this is normal... I used the T5 for quite some month now and daily moved hundreds of gigabytes to and from it. I had no issues with the SSD so far (which is way i decided to NOT install a standard SATA SSD). ##What happens if I plug off the SSD? IF you do that, than please power of the Pi before. Your Pi won't run/boot without the SSD after you moved the filesystem on it... I think thats quite logic. ##Why don't you fix the Pi with plastic screws in the case? I had really really really many Pi's now (like >40?)... Most of them are still running anywhere in the world. However I learned: If you use some strong cables (Ethernet, USB3, USB-C Power,HDMI,....), then you should NOT use screws. In worst case, they literally damage your Pi. Happend 3 times to me now. You can fix the Pi to the case with some rubber band or the hair tie of your sister.
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