Glossary of Samsung Hard Disk Drive (Letter S)

Samsung Hard Disk Drive Glossary SCSI
Small Computer System Interface, device interconnection standard allowing daisy chaining of devices. There are various standards of SCSI: SCSI, SCSI-2, SCSI-3 and SCSI-4

Sector
Smallest grouping of data that can be assigned to store data on the media of an Hard Disk Drive, comprises of 512 bytes (section of a track)

Seek (time)
The movement of a head in search of the right data track

Sequential Access
The reading or writing of data in a sequential order as opposed to random access

Servo data / pattern
Magnetic markings that indicate the position of a head relative to a track (guide for head)

Servo system
a recorded segment of the CD that may contain one or more tracks of any type (data/audio)

Settle Time
The time lapse between arrival of the head at a specific track, and the head to stop fibrating so that a reliable read/write can take place

SFF
Small form factor, a committee consisting of suppliers of IDE hard disk drives, formed to agree technical specifications such as E-IDE

Shock rating
Measurement (Gs) indicating how much shock a disk drive before damage could occur

S.M.A.R.T
Self-Monitoring Analysis and Reporting Technology, an automatic process which provides an advanced warning of device degradation and/or faults, to help prevent loss of data. Early warning system

Spindle Motor
Motor that rotates the platters

Soft Error
A data error which can be corrected by attempting to re-read the data

SSA
Serial Storage Architecture, an new type of interface, using copper or fibre optic connections. Data travels serially (one bit at the time)

Stepper Motor
predecessor of Rotary Voice Coil Motor, component that controls head movement

Storage Density
recording density (see BPI, TPI, Areal Density)

Substrate
The material underneath the magnetic coating of a disk

Surface
each side of a disk has a surface that is coated with the magnetic material for data storage

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How To Tell If The Noisy Hard Drive Is Normal?

Noisy Hard Drive Current hard drive technology dictates that some noise will occur during drive operation. The type of noise and the volume of the noise can change depending on the current function that the drive is involved in. It is important to recognize which noises indicate trouble and which are simply normal drive sounds.

Normal drive sounds include:

  • Whining noise during drive spin-up
  • Occasional clicks during data access
  • Hard clicks during a head park operation (shutdown or sleep mode)

Abnormal drive sounds include:

  • High-pitched whining sound
  • Vibration sounds due to either vibration in the mounting hardware or in rare cases, a drive failure
  • Clicking or clunking sounds that occur repeatedly
  • Grinding sounds

Solutions:

Step1: Make sure it is not a case fan or another device
Turn off the system. Remove both the power and data cables from the drive. Turn on the system to see if the noise continues. If the noise is still present, the drive is not the cause. Search for another device such as a case fan, which is causing the noise. If the noise is no longer present, continue with Step 2.

Step 2: Determine if the problem is the hard drive or its data cable
Turn off the system. Connect only the power cable to the drive, and turn on the system. If the noise occurs, the problem is with the drive. At this point, continue with Step 3. If the there is no noise, the drive is not at fault. Turn off the system and connect your data cable. Turn on the system. If the noise occurs now, your data cable is faulty and should be replaced.

Step 3: Try the hard drive in a new location
Turn off the system. Install the drive into a different drive bay or place it securely on an anti-static surface if available. Attach only the power cable. Turn on the system. If the noise is still present, the drive has failed and should be replaced.

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Western Digital 320GB hard drive unreadable data recovery case

Case:After the financial computer of the customer company, after the hard disk had a problem, the company’s network management searched the online search solution and downloaded some partition software reconstruction partitions. The data still did not recover.So repeatedly reconstructed operations, and tried multiple software, and eventually no fruit, recovered in our center.After receiving my computer,…

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