RAID Technology? (1 Viewer)

[thebigwillie]

Ok can someone plz define these different technologies for me? Thanx

RAID Technology
Optical Disk Technology
FAST Technology

 

[hammond]

go to www.webopedia.com for all it definitionswww.webopedia.com

 

[CrashOveride]

it explains it pretty hardcore, im sure most ppl wont understand for RAID. hmm is it something we need to know about? it came up in one question in the trial, the process of deduction proved fruitful

 

[Freedom_Dragon]

Stands for Redundant Array of Independant Disk.

Also allows system to continue operating even if 1 or 2 disks dies.

 

[stoydgen]

lol @ FAST technology

Umm Raid technology basically allows for multiple hard drives to be connected together. Depending on the RAID config used, it can do either data mirroring (RAID 1), where two identical hard drives are connected, and when data is written to one hard drive, it is also writeen to the other one as backup (data mirroring). RAID 0 is data striping, where two HDD's are connected and the OS treats them as one big hard drive, and when data is written, it is split btween the two hard drives, resulting in quicker read/write times.

RAID 0 for quicker access
RAID 1 for safer data

 

[infirmus]

There is actually RAID - 0,1,2,3,4,5,6,7,10,53

All have varying disk no. requirements and different transfer speeds and varying levels of data protection.

 

[Kyleseto]

RAID won't be in the exam as if you would even worry about it

 

[azn_boy]

Well it was in the CSSA paper, thats where thebigwillie came up with the question in the first place!

 

[CrashOveride]

nah it was independant not cssa

 

[busterblues]

RAID = Redundant Array of Independant Disks

It has a variety of types including 0, 1, 2, 0+1, 5, 7 etc. Each mode uses standard hard disk drives and uses them in a array of disks to somehow benifit the user.

Common RAID Levels for Desktop PCs are RAID 0 and RAID 1...

RAID 0 - Data Striping = Distributes the data over two hard drives so that data is optimised for fast storage/retrieval. There is a slight performance gain but this is usually used in server setups and desktops with high data processing demands. Disadvantage of it is that if one hard drive fails, all the data in the "RAID Set" is useless and cannot be recovered, unlike having two separate disks and volumes/partitions.

RAID 1 - Data Mirroring = Basically makes a mirror image of a hard drive and copies it over to the 2nd hard drive exactly in complete synchronisation. This is used so that if one hard drive fails, the other one can take over without any risk of data loss due to hardware failure. THIS DOES NOT HELP IF DATA IS CORRUPTED HOWEVER! As the data corruption will also appear on the 2nd Hard Drive

RAID Controller = Controlls RAID Functions and RAID "Levels".

That should clear up everything about RAID Dont get confused as there are different ways a RAID can be used

 

[mcbec]

so, what about FAST technology?? (that question was in one of our practice exams)

 

[busterblues]

Trick question I am afraid. I saw the exact same question when I did IT. There is no such thing as FAST technology.

There is a feature in Windows called the File And Settings Transfer Wizard but that is not what they are talking about there . Gotta watch out for them