Shridhar Daithankar wrote: >On 19 Sep 2002 at 20:41, Philip S Tellis wrote: > > >>On Thu, 19 Sep 2002, Shridhar Daithankar wrote: >> >> >>>How does a partition spans multiple disk? I don't know how RAID works >>>but in my guess that would be a single device /dev/hdr rather than >>> >>> >>a partition is just a virtual demarkation of file system boundaries. >> >> > >Not true. A file system is made on a partition unless it's a RAID, In case of >RAID disks are physically mirrored so are partitions. > > Who said it is mirrored if you use raid?
There are several type of RAID configurations available RAID0, RAID1,RAID2,RAID3,RAID4 and RAID5 RAID1 is basically mirroring and the rest of them are not using mirroring, they are implementing different type of approaches to extend the disk space availability. RAID0 is basically striping which gives performance at the multiplication factor of your spin speed and the stripes. Rest of them find it yourself. >Partition comes first then file system. Not otherwise.. > > >>there is nothing that says >> >>1. a partition must be contiguous. ie, a single partition can be made >>up of small parts scattered all over the disk >>2. on a single disk >> >> > >Partition can also be recognised by BIOS and thus independent of OS. I think >it's a part of IBM PC clone definition. I can't think of a way to create a >partition that spans multiple disk without RAID. Could you illustrate? > > OK, Don't confuse yourself. It is only option to have that RAID to do what you wanted. But it is possible to write an interface just like RAID interface to support what you wanted, Why reinvent the wheel when you have already better one, If you think it is not better, then invent your own. ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ linux-india-help mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/linux-india-help
