深度学习，确切的说是计算机视觉，对磁盘的转速是有要求的。
5400转，7200转，转速要大一点。有的是能调转速的，有的不能。
这次我买的这个服务器调不了。

``

(base) justin@justin-System-Product-Name:~$ sudo hdparm -I /dev/sda | grep Rotation
Nominal Media Rotation Rate: 5400
(base) justin@justin-System-Product-Name:~$ sudo hdparm -I /dev/sdb | grep Rotation
Nominal Media Rotation Rate: 5400
(base) justin@justin-System-Product-Name:~$ sudo hdparm -I /dev/sdc | grep Rotation
Nominal Media Rotation Rate: 5400
(base) justin@justin-System-Product-Name:~$ sudo hdparm -I /dev/sdd | grep Rotation
Nominal Media Rotation Rate: 5400

(base) justin@justin-System-Product-Name:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 74.3M 1 loop /snap/core22/1612
loop1 7:1 0 269.8M 1 loop /snap/firefox/4793
loop2 7:2 0 4K 1 loop /snap/bare/5
loop3 7:3 0 74.3M 1 loop /snap/core22/1586
loop4 7:4 0 271.2M 1 loop /snap/firefox/4848
loop5 7:5 0 497M 1 loop /snap/gnome-42-2204/141
loop6 7:6 0 505.1M 1 loop /snap/gnome-42-2204/176
loop7 7:7 0 91.7M 1 loop /snap/gtk-common-themes/1535
loop8 7:8 0 12.3M 1 loop /snap/snap-store/959
loop9 7:9 0 12.9M 1 loop /snap/snap-store/1113
loop10 7:10 0 38.7M 1 loop /snap/snapd/21465
loop11 7:11 0 38.8M 1 loop /snap/snapd/21759
loop12 7:12 0 476K 1 loop /snap/snapd-desktop-integration/157
loop13 7:13 0 500K 1 loop /snap/snapd-desktop-integration/178
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 300M 0 part
├─sda2 8:2 0 128M 0 part
└─sda3 8:3 0 1.8T 0 part
sdb 8:16 0 1.8T 0 disk
├─sdb1 8:17 0 300M 0 part
├─sdb2 8:18 0 128M 0 part
└─sdb3 8:19 0 1.8T 0 part
sdc 8:32 0 1.8T 0 disk
├─sdc1 8:33 0 300M 0 part
├─sdc2 8:34 0 128M 0 part
└─sdc3 8:35 0 1.8T 0 part
sdd 8:48 0 1.8T 0 disk
├─sdd1 8:49 0 300M 0 part
├─sdd2 8:50 0 128M 0 part
├─sdd3 8:51 0 931.3G 0 part
└─sdd4 8:52 0 931.3G 0 part /var/snap/firefox/common/host-hunspell
/
nvme0n1 259:0 0 931.5G 0 disk
├─nvme0n1p1 259:1 0 100M 0 part /boot/efi
├─nvme0n1p2 259:2 0 128M 0 part
└─nvme0n1p3 259:3 0 931.3G 0 part