SCSI,HDD,SAS,SATA,SSD

Question

SCSI

HDD

SATA

SAS

What are they? Why do we prefer them?
Particularly I wonder Scsi drive,structure,advantages?
In Scsi issue,detailed definition,detailed explanation please.

I want to learn these terms in details,I have been in MCSE course,i couldn't find detailed and clear sources here and in my Windows Server books
Best rgds,

Answer 1

HDD is simply a basic and mechanical hard disc drive, as opposed to ssd which is a flash memory hard drive (way faster, durable, but more expensive than a hdd)

For SATA and SAS, let's say that SAS is the enterprise version of SAS (but you can still connect a SATA drive to a SAS connector, but not the opposite) : https://www.pickaweb.co.uk/kb/difference-between-sata-sas-hard-drives/

SCSI is the ancestor of SAS, kind of the entreprise version of IDE, with better speed and capabilities.

Answer 2

Hi,GuillamueH. Thank you. It is the most useful explaining for me.Link is very understandable,detailed one.

But I wonder,please,is there a mistake in statement

"..let's say that SAS is enterprise versiyon of SAS.."

Please confirm if it is a true statement.

Best rgds,

Answer 3

Hi,DSPatrick. Thank you very much.

It is also explained issues above.But have you a link or document on IDE term,issue

Best rgds,