In theory a good implementation of Raid 1 should be faster for reading data off disk because it can return the data as soon as it gets it off either disk thus avoiding slow seeks. If done well I guess it could also split multiple big reads across both disks since they should contain the same data.
However I believe Raid 1 should be slower for writes because it needs to write to both disks for confirming the write? Cheers, David. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Alister Christie Sent: Monday, 30 March 2009 1:18 p.m. To: NZ Borland Developers Group - Offtopic List Subject: Re: [DUG-Offtopic] new PC Raid 1 shouldn't give any performance improvement. Alister Christie Computers for People Ph: 04 471 1849 Fax: 04 471 1266 http://www.salespartner.co.nz PO Box 13085 Johnsonville Wellington Conor Boyd wrote: > The point I was making was that I believe RAID 1 to be a performance > improvement. > > If there are reliablility improvements, then for me that is irrelevant. > And I agree, certainly no replacement for a decent backup strategy. > > C. > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of John Bird > Sent: Monday, 30 March 2009 11:50 a.m. > To: NZ Borland Developers Group - Offtopic List > Subject: Re: [DUG-Offtopic] new PC > > Rather than RAID I tend to take a more minimal approach - reliable > laptop, no RAID, and image the entire HD to an external disk regularly. > Can use Acronis, Ghost, or Drive Snapshot. > > I figure the downtime replacing a single HD in a lpatop is going to be > a few hours minimum no matter how its done. > > Note the interesting part is restoring drive C if needed, I use a WAIK > boot DVD to do that. Works very well, only trick is that Microsoft > make it as difficult as possible to get this free dowload because they > don't want too > many to get hold of it obviously. But its the best way I know to > easily > access external disks if your HD windows is stuffed, or need to > reinstall working windows over a factory image recovery. > > (The steps are roughly: > 1 - find the download > 2 - download a disk image 990MB > 3 - Burn to a DVD/CD > 4 - run the DVD installer to install WAIK > 5 - use arcane command line options to create a bootable command line > Vista DVD > > simple really... > > ). > > > John > > _______________________________________________ > 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 > > _______________________________________________ > 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 > > _______________________________________________ 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 _______________________________________________ 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
