Information About Solid State Disk in Linux

Linux and Unix-Like Red Hat
1

Hello,
I have few HDD and SSD installed in my RHEL 5 server. I want to know which disk are SDD and which are HDD. What command should I use?
Thanks

2

smartctl -i /dev/sda

Monitoring Hard Drive Health on Linux with smartmontools | Random Bits

Manpage of SMARTCTL

3

Hello,
Thanks for answer. Don't we have some built in utility like hdparm or fdisk to get the information?

regards

4

Also realize that if you are using SSD with Linux, you may want to change the I/O scheduler on that volume to something like noop. There's no reason to try to queue based on head patterns when there's no head.