Linux: Find out serial / model number and vendor information for SATA and IDE hard disk

How do I find out the make, model and serial number for my SCSI or IDE hard disks under CentOS Linux server? How do I get vendor information about my disk storage w/o opening my Intel / AMD server chassis?

You need to use the hdparm command. It provides a command line interface to various hard disk ioctls supported by the stock Linux ATA/IDE/SATA device driver subsystem i.e. get BIOS information from hard disk.

Getting hard disk model and number under Linux

Try command as follows for /dev/sda (SATA). You need to pass -i or -I option which request identification info directly from the drive, which is displayed in a new expanded format:
# hdparm -I /dev/sda # hdparm -I /dev/sda | grep Serial
OR for IDE /dev/hda
# hdparm -i /dev/hda
OR
# hdparm -I /dev/hda
Sample outputs:

/dev/sda:
ATA device, with non-removable media
        Model Number:       SAMSUNG SV2002H
        Serial Number:      0395J1FR904324
        Firmware Revision:  RA100-04
Standards:
        Used: ATA/ATAPI-6 T13 1410D revision 1
        Supported: 6 5 4
Configuration:
        Logical         max     current
        cylinders       16383   16383
        heads           16      16
        sectors/track   63      63
        --
        CHS current addressable sectors:   16514064
        LBA    user addressable sectors:   39180960
        device size with M = 1024*1024:       19131 MBytes
        device size with M = 1000*1000:       20060 MBytes (20 GB)
Capabilities:
        LBA, IORDY(cannot be disabled)
        Standby timer values: spec'd by Standard, no device specific minimum
        R/W multiple sector transfer: Max = 16  Current = 16
        Recommended acoustic management value: 128, current value: 0
        DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5
             Cycle time: min=120ns recommended=120ns
        PIO: pio0 pio1 pio2 pio3 pio4
             Cycle time: no flow control=120ns  IORDY flow control=120ns
Commands/features:
        Enabled Supported:
                SMART feature set
                Security Mode feature set
           *    Power Management feature set
           *    Write cache
           *    Look-ahead
           *    Host Protected Area feature set
           *    WRITE_BUFFER command
           *    READ_BUFFER command
           *    NOP cmd
           *    DOWNLOAD_MICROCODE
                SET_MAX security extension
                Automatic Acoustic Management feature set
           *    Mandatory FLUSH_CACHE
Security:
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
        not     frozen
        not     expired: security count
                supported: enhanced erase
        20min for SECURITY ERASE UNIT. 20min for ENHANCED SECURITY ERASE UNIT.
HW reset results:
        CBLID- below Vih
        Device num = 0 determined by the jumper
Checksum: correct

scsi_id command examples

For SCSI attached disk use scsi_id command which queries a SCSI device via the SCSI INQUIRY vital product data (VPD) page 0x80 or 0x83 and uses the resulting data to generate a value that is unique across all SCSI devices that properly support page 0x80 or page 0x83.
# scsi_id -s /block/sda # scsi_id -a -s /block/sda # scsi_id -gus /block/sda

Where,

-s : Generate an id for the sysfs-device
-a : Always print information (model, vendor strings) about the device even if it does not support VPD pages.
-g : Treat the device as white listed. The -g option must be specified on the command line or in the scsi_id configuration file for scsi_id to gener ate any output
-u : Reformat the output : replace all whitespaces by underscores.

sdparm command

The sdparm command can be used to access SCSI modes pages; read VPD pages; send simple SCSI commands. It can provide all information:
# sdparm -a /dev/sda # sdparm --vendor sea /dev/sda