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Difference between near Line SATA vs Near Line SAS

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  • Hard Drives
  • SAS
  • SATA
  • Storage
Last response: in Storage
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August 4, 2011 12:40:17 PM

I confused between Near line SAS Hard Disk & near line SAS Hard disk.Can i get the technical specification of both.

More about : difference line sata line sas

a c 415 G Storage
August 4, 2011 4:30:37 PM

An SAS disk is an Enterprise-class drive which supposedly has a more robust mechanical specification and a controller/firmware optimized for high-volume I/O, manageability, and better error detection and correction.

A "near line SAS" disk is a standard consumer-class SATA drive with an SAS interface.
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a c 326 G Storage
August 6, 2011 11:09:22 PM

The term, "near line", does not relate to the specification of the hard drive. Instead it refers to a storage or backup philosophy, eg on-line, near-line, off-line.

http://en.wikipedia.org/wiki/Nearline_storage

"Nearline storage (where the word 'nearline' is a contraction of near-online) is a term used in computer science to describe an intermediate type of data storage that represents a compromise between online storage (supporting frequent, very rapid access to data) and offline storage/archiving (used for backups or long-term storage, with infrequent access to data)."
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a c 415 G Storage
August 6, 2011 11:25:26 PM

fzabkar said:
The term, "near line", does not relate to the specification of the hard drive. Instead it refers to a storage or backup philosophy, eg on-line, near-line, off-line.
That's true in a generic sense. But for SAS drives it also has the specific meaning I described. See: http://en.wikipedia.org/wiki/Serial_attached_SCSI#Nearl...
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