Re: hardware raid vs. software raid

2006-12-01 Thread Roberto C. Sanchez
On Fri, Dec 01, 2006 at 09:19:08AM +0100, Matus UHLAR - fantomas wrote: > > On 30.11.06 17:00, Roberto C. Sanchez wrote: > > This is only true if you use IDE and also put the mirrored pair on the > > same channel (which would be incredibly foolish). Under every other > > conceivable scenario, th

Re: hardware raid vs. software raid

2006-12-01 Thread Dave Ewart
On Thursday, 30.11.2006 at 22:53 +0100, Matus UHLAR - fantomas wrote: > > > On 30.11.06 15:44, Johannes Wiedersich wrote: > > > > What is debian's opinion about hardware/software raid? > > > On Thursday, 30.11.2006 at 16:56 +0100, Matus UHLAR - fantomas wrote: > > > it highly depends on the hardw

Re: hardware raid vs. software raid

2006-12-01 Thread Matus UHLAR - fantomas
> On Thu, Nov 30, 2006 at 10:53:26PM +0100, Matus UHLAR - fantomas wrote: > > > > I did not want to mention this, because: > > > > - software RAID-1 has bus overhead (the same data have to be transferred > > multiple times to multiple drives, so writing may be twice as slow) On 30.11.06 17:00,

Re: hardware raid vs. software raid

2006-11-30 Thread Roberto C. Sanchez
On Thu, Nov 30, 2006 at 10:53:26PM +0100, Matus UHLAR - fantomas wrote: > > I did not want to mention this, because: > > - software RAID-1 has bus overhead (the same data have to be transferred > multiple times to multiple drives, so writing may be twice as slow) > This is only true if you use I

Re: hardware raid vs. software raid

2006-11-30 Thread Matus UHLAR - fantomas
> Dave Ewart wrote: > > Although it's worth pointing out that software RAID-*1* (one of the > > options under consideration) has almost no CPU overhead, and is often a > > good low-cost option. > > > > Part of your decision must rest on what exactly the machine will be > > doing. Different RAID s

Re: hardware raid vs. software raid

2006-11-30 Thread Matus UHLAR - fantomas
> > On 30.11.06 15:44, Johannes Wiedersich wrote: > > > What is debian's opinion about hardware/software raid? > On Thursday, 30.11.2006 at 16:56 +0100, Matus UHLAR - fantomas wrote: > > it highly depends on the hardware raid. The true hardware RAID with > > hotspare, hotswap etc. support and with

Re: hardware raid vs. software raid

2006-11-30 Thread Hans du Plooy
On Thu, 2006-11-30 at 17:20 +0100, Johannes Wiedersich wrote: > My concern is that we are going to have only one server. So if there was > a hardware problem, with software raid I could just temporarily move the > disks to an ordinary workstation and serve the data from there. With > hardware raid,

Re: hardware raid vs. software raid

2006-11-30 Thread michael
On Thu, 30 Nov 2006 15:44:38 +0100, Johannes Wiedersich wrote > Preparing to buy a new server... > > What is debian's opinion about hardware/software raid? > > I have the feeling that software raid 1 is more reliable since if > anything goes wrong with the hardware, I could just take one or two >

Re: hardware raid vs. software raid

2006-11-30 Thread Johannes Wiedersich
Dave Ewart wrote: > Although it's worth pointing out that software RAID-*1* (one of the > options under consideration) has almost no CPU overhead, and is often a > good low-cost option. > > Part of your decision must rest on what exactly the machine will be > doing. Different RAID setups are best

Re: hardware raid vs. software raid

2006-11-30 Thread Dave Ewart
On Thursday, 30.11.2006 at 16:56 +0100, Matus UHLAR - fantomas wrote: > On 30.11.06 15:44, Johannes Wiedersich wrote: > > Preparing to buy a new server... > > > > What is debian's opinion about hardware/software raid? > > > > I have the feeling that software raid 1 is more reliable since if > >

Re: hardware raid vs. software raid

2006-11-30 Thread Matus UHLAR - fantomas
On 30.11.06 15:44, Johannes Wiedersich wrote: > Preparing to buy a new server... > > What is debian's opinion about hardware/software raid? > > I have the feeling that software raid 1 is more reliable since if > anything goes wrong with the hardware, I could just take one or two > disks out of th

hardware raid vs. software raid

2006-11-30 Thread Johannes Wiedersich
Preparing to buy a new server... What is debian's opinion about hardware/software raid? I have the feeling that software raid 1 is more reliable since if anything goes wrong with the hardware, I could just take one or two disks out of the server and put them into a workstation to get up and runni