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need help understanding Raid0

S

Smithyoffline

Senior member
I would just like to know if I have a 120gig hard drive and get a 250gig hard drive and raid them in the form of raid0 will I get 370gig or 240gig (in other words would the 250gig recognise as a 250gig or 120 in a raid with a 120)

Thanks for you help
 
Nothing wrong with RAID 0.

But yes, due to the way RAID works, you must have two drives of the same capasity, or the larger one will only have 120 gigs of it that can be used.
 
well i want 2 drives in the system as i have a 120gig now and i do movies so i need another 120gig in there so raid0 is the only one i can use. The other one just makes double of my data.
 
Originally posted by: Smithyoffline
well i want 2 drives in the system as i have a 120gig now and i do movies so i need another 120gig in there so raid0 is the only one i can use. The other one just makes double of my data.
Click to expand...

don't raid, just map the 2nd drive to a Folder on your main drive.

raid isn't the ONLY to go.

if you DO want to raid, don't buy a 250, buy 2 additional 120's and do raid stripe with parity (raid 5)
 
the only RAID I'd ever recomend is RAID1 (or RAID10, if you have money to burn).

the problem with RAID0 is that if either of the drives fails, you lose everything.

why not just have them as two independant drives?
 
Originally posted by: Smithyoffline
whats raid5 and how many drives do you need for that and what are the benifits
Click to expand...

you need 3 to get it started, but you will need a new HBA to do so
 
Host Bus Adapter

A adapter card typically use them the attach a server to share bus of some type..... In a storage context............it will be fibre channel or may be SCSI on disk sub system.
Currently, you will typically use them on servers to connect via SAN (storage area network ) to a fibre channel disk array.

not so many years ago, you might have needed them to access shared SCSI disk subsystems. Why would you want to share access to a SCSI disks......well mainly for implementing server clustering like Microsoft Cluster server, Veratas Cluster server, Oracle Prarallel Server/ Real Application Clusters (RAC) , HP-UX M/C service guard , IBM HACMP....... but seriously, this stuff is really for enterprise applications..


As for RAID 0..... RAID 0 isn't raid becuase it is NOT redunden. It acutually increases the chance of data loss.......loose one drive and you loose it all....Seriously, do you really need 370 Gigs of continuous accesable drive space..?
 
Err dude, I'm still wondering why you NEED raid 0? Why not just install the HD normally as a separate disk? The performance improvement by going to RAID 0 is marginal at best. It's def not worth the doubling of the chance of failure.
 
Telling him to not use RAID at all is rather foolish. If you buy drives of good quality you have nothing to worry about. The speed increase I saw with my 2x120GB WD SATA RAID0 was well worth the cost.
 
If you do set up a RAID, make sure to get two of the exact same model drives (i.e. 2x120GB Western Digital 7200RPM 8MB cache), better yet, get both at the same time from the same place, or you may run into strange problems with corruption down the road.
 
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