Check out http://en.wikipedia.org/wiki/RAID, it's reasonably accurate.
In general with a good RAID controller (and that makes a big difference) you can get excellent performance benefits over a single disk with RAID-0 and RAID-5. RAID 0 gives no redundancy, RAID-1 and 5 give redundancy (a drive can fail without losing data). RAID-1 is usually two disks striped, RAID-5 requires a minimum of 3 drives. RAID 0, 1 and 5 are the most common, RAID-10 (Not really) is a combination of RAID 1 and RAID 0, i.e. two striped drives duplicated (4 drives total). -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of PDS - John Sent: Wednesday, 28 October 2009 1:03 p.m. To: 'NZ Borland Developers Group - Offtopic List' Subject: Re: [DUG-Offtopic] 32 bits or 64 bits Hi What is the benefit of a RAID system. As far as I know :) it is to run multiple HDDs sharing storage across the HDDs, isn't it? So assuming all OS related stuff sits on one HDD and all my docs and projects etc sit on a 2nd HDD then I don't need RAID, or? John > -----Original Message----- > From: [email protected] [mailto:offtopic- > [email protected]] On Behalf Of Alister Christie > Sent: Wednesday, 28 October 2009 12:27 p.m. > To: NZ Borland Developers Group - Offtopic List > Subject: Re: [DUG-Offtopic] 32 bits or 64 bits > > If your really after performance you could consider getting an SSD as > they have been steadily dropping in price. Alternatively consider some > sort of RAID system. A 7200 RPM 320GB drive costs less than $90. You > could get 4 of these in a RAID 5 system for under $400 (3 striped one > parity) - which would have pretty impressive transfer rates, plus would > handle a single drive failure. I have a pair of drives in my home > machine striped (I need to remember the mantra - backup, backup, > backup) > - and it's really fast for streaming data - probably wont decrease your > compile time as that usually involves lots of small files (I believe > SSDs are really good for this). > > Alister Christie > Computers for People > Ph: 04 471 1849 Fax: 04 471 1266 > http://www.salespartner.co.nz > PO Box 13085 > Johnsonville > Wellington > _______________________________________________ NZ Borland Developers Group Offtopic mailing list Post: [email protected] Admin: http://delphi.org.nz/mailman/listinfo/offtopic Unsubscribe: send an email to [email protected] with Subject: unsubscribe No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.423 / Virus Database: 270.14.34/2463 - Release Date: 10/27/09 15:50:00 _______________________________________________ NZ Borland Developers Group Offtopic mailing list Post: [email protected] Admin: http://delphi.org.nz/mailman/listinfo/offtopic Unsubscribe: send an email to [email protected] with Subject: unsubscribe
