[root@localhost pasha]# hdparm -I /dev/sda

/dev/sda:

ATA device, with non-removable media
        Model Number:       ST3320418AS                             
        Serial Number:      6VM5Y8P4
        Firmware Revision:  CC37   
        Transport:          Serial
Standards:
        Used: unknown (minor revision code 0x0029)
        Supported: 8 7 6 5
        Likely used: 8
Configuration:
        Logical         max     current
        cylinders       16383   16383
        heads           16      16
        sectors/track   63      63
        --
        CHS current addressable sectors:   16514064
        LBA    user addressable sectors:  268435455
        LBA48  user addressable sectors:  625142448
        Logical/Physical Sector size:           512 bytes
        device size with M = 1024*1024:      305245 MBytes
        device size with M = 1000*1000:      320072 MBytes (320 GB)
        cache/buffer size  = 16384 KBytes
        Nominal Media Rotation Rate: 7200
Capabilities:
        LBA, IORDY(can be disabled)
        Queue depth: 32
        Standby timer values: spec'd by Standard, no device specific minimum
        R/W multiple sector transfer: Max = 16  Current = 16
        Recommended acoustic management value: 254, current value: 0
        DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
             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
           *    DOWNLOAD_MICROCODE
                SET_MAX security extension
                Automatic Acoustic Management feature set
           *    48-bit Address feature set
           *    Device Configuration Overlay feature set
           *    Mandatory FLUSH_CACHE
           *    FLUSH_CACHE_EXT
           *    SMART error logging
           *    SMART self-test
           *    General Purpose Logging feature set
           *    WRITE_{DMA|MULTIPLE}_FUA_EXT
           *    64-bit World wide name
                Write-Read-Verify feature set
           *    WRITE_UNCORRECTABLE_EXT command
           *    {READ,WRITE}_DMA_EXT_GPL commands
           *    Segmented DOWNLOAD_MICROCODE
           *    Gen1 signaling speed (1.5Gb/s)
           *    Gen2 signaling speed (3.0Gb/s)
           *    Native Command Queueing (NCQ)
           *    Phy event counters
                Device-initiated interface power management
           *    Software settings preservation
           *    SMART Command Transport (SCT) feature set
           *    SCT Long Sector Access (AC1)
           *    SCT LBA Segment Access (AC2)
           *    SCT Error Recovery Control (AC3)
           *    SCT Features Control (AC4)
           *    SCT Data Tables (AC5)
                unknown 206[12] (vendor specific)
Security:
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
                frozen
        not     expired: security count
                supported: enhanced erase
        62min for SECURITY ERASE UNIT. 62min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5000c50018bf79ab
        NAA             : 5
        IEEE OUI        : 000c50
        Unique ID       : 018bf79ab
Checksum: correct

[root@localhost pasha]# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads:   7256 MB in  2.00 seconds = 3629.14 MB/sec
Timing buffered disk reads: 318 MB in  3.01 seconds = 105.79 MB/sec

dev/sdb:
Timing cached reads:   7246 MB in  2.00 seconds = 3624.02 MB/sec
Timing buffered disk reads: 546 MB in  3.00 seconds = 181.82 MB/sec