Re: Two-disk RAID5?

2006-05-04 Thread Bill Davidsen
John Rowe wrote: I'm about to create a RAID1 file system and a strange thought occurs to me: if I create a two-disk RAID5 array then I can grow it later by the simple expedient of adding a third disk and hence doubling its size. Is there any real down-side to this, such as performance? Alternat

Re: Two-disk RAID5?

2006-05-04 Thread Bill Davidsen
Erik Mouw wrote: On Wed, Apr 26, 2006 at 03:22:38PM -0400, Jon Lewis wrote: On Wed, 26 Apr 2006, Jansen, Frank wrote: It is not possible to flip a bit to change a set of disks from RAID 1 to RAID 5, as the physical layout is different. As Tuomas pointed out though, a 2 disk RAI

Re: disks becoming slow but not explicitly failing anyone?

2006-05-04 Thread Bill Davidsen
Nix wrote: On 23 Apr 2006, Mark Hahn stipulated: I've seen a lot of cheap disks say (generally deep in the data sheet that's only available online after much searching and that nobody ever reads) that they are only reliable if used for a maximum of twelve hours a day, or 90 hours a week, or