/dev/sd* devices are not showing under /dev folder

Issue

• /dev/sd* devices are not visible under /dev but, it is visible under /sys/block

# ls -lanR /sys/block
/sys/block:
total 0
drwxr-xr-x.  2 0 0 0 Jul 12 22:32 .
drwxr-xr-x. 13 0 0 0 Jul 12 22:31 ..
..
..
lrwxrwxrwx.  1 0 0 0 Jul 12 22:32 sdj -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/host5/target5:0:0/5:0:0:0/block/sdj
lrwxrwxrwx.  1 0 0 0 Jul 12 22:32 sdk -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/host5/target5:0:1/5:0:1:0/block/sdk
lrwxrwxrwx.  1 0 0 0 Jul 12 22:32 sdl -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/host5/target5:0:2/5:0:2:0/block/sdl
lrwxrwxrwx.  1 0 0 0 Jul 12 22:32 sdm -> ../devices/pci0000:00/0000:00:18.0/0000:1b:00.0/host5/target5:0:3/5:0:3:0/block/sdm

# ls -lanR /dev
/dev:
..
..
brw-rw----.  1  0  6   8,   0 Jul 12 22:32 sda
brw-rw----.  1  0  6   8,   1 Jul 12 22:32 sda1
brw-rw----.  1  0  6   8,   2 Jul 12 22:32 sda2
brw-rw----.  1  0  6   8,   3 Jul 12 22:32 sda3
brw-rw----.  1  0  6   8,  16 Jul 12 22:32 sdb
brw-rw----.  1  0  6   8,  17 Jul 12 22:32 sdb1
brw-rw----.  1  0  6   8,  18 Jul 12 22:32 sdb2
brw-rw----.  1  0  6   8,  32 Jul 12 22:32 sdc
brw-rw----.  1  0  6   8,  33 Jul 12 22:32 sdc1
brw-rw----.  1  0  6   8,  48 Jul 12 22:32 sdd
brw-rw----.  1  0  6   8,  49 Jul 12 22:32 sdd1
brw-rw----.  1  0  6   8,  96 Jul 12 23:29 sdg
brw-rw----.  1  0  6   8,  97 Jul 12 22:32 sdg1
brw-rw----.  1  0  6   8,  98 Jul 12 22:32 sdg2
brw-rw----.  1  0  6   8,  99 Jul 12 22:32 sdg3
brw-rw----.  1  0  6   8, 100 Jul 12 22:51 sdg4                 
..
..