Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-30 Thread Joseph H. Fry
On Friday 27 January 2006 5:44 pm, Oliver Lupton wrote: > On Fri, 27 Jan 2006 23:33:54 +0100 > > Stephan Seitz <[EMAIL PROTECTED]> wrote: > > Hm, are you sure? Mirroring is RAID1. RAID10 means, that you have one > > RAID0 array mirrored at another one. Since you need three disks for a > > RAID5, I

Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-29 Thread Neil Dugan
David Gaudine wrote: I have to set up a system that is totally reliable w.r.t. data integrity. That is, if a disk (or anything else) fails, it's OK if the system is down for a few hours, but when it comes back up it has to be exactly as it was, i.e. I can't restore from the previous day's back

Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-27 Thread Tony Godshall
According to Joseph H. Fry, > I am partial to software raid for one important reason longevity. One > great thing about linux is that it rarely makes something entirely > obsolete... and even if it does, you can always download previous versions of > your favorite distro... an array create

Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-27 Thread Noah Dain
On 1/27/06, David Gaudine <[EMAIL PROTECTED]> wrote: > I have to set up a system that is totally reliable w.r.t. data > integrity. That is, if a disk (or anything else) fails, it's OK if the > system is down for a few hours, but when it comes back up it has to be > exactly as it was, i.e. I can't

Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-27 Thread Oliver Lupton
On Fri, 27 Jan 2006 23:33:54 +0100 Stephan Seitz <[EMAIL PROTECTED]> wrote: > Hm, are you sure? Mirroring is RAID1. RAID10 means, that you have one > RAID0 array mirrored at another one. Since you need three disks for a > RAID5, I thought RAID50 would mean a RAID5 array over at least three > RAI

Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-27 Thread Stephan Seitz
On Fri, Jan 27, 2006 at 04:50:47PM -0500, Joseph H. Fry wrote: versions of your favorite distro... an array created by mdadm today will likely be readable by most linux distros for many years to come. Yes, that's certainly true. And I think, you can boot from a software RAID1 without much trou

Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-27 Thread Joseph H. Fry
I am partial to software raid for one important reason longevity. One great thing about linux is that it rarely makes something entirely obsolete... and even if it does, you can always download previous versions of your favorite distro... an array created by mdadm today will likely be read

Re: Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-27 Thread Johannes Wiedersich
David Gaudine wrote: I have to set up a system that is totally reliable w.r.t. data integrity. That is, if a disk (or anything else) fails, it's OK if the system is down for a few hours, but when it comes back up it has to be exactly as it was, i.e. I can't restore from the previous day's back

Hardware RAID, software RAID, 3ware 9550SX, level 1 vs. level 5

2006-01-27 Thread David Gaudine
I have to set up a system that is totally reliable w.r.t. data integrity. That is, if a disk (or anything else) fails, it's OK if the system is down for a few hours, but when it comes back up it has to be exactly as it was, i.e. I can't restore from the previous day's backup. The obvious solu