At 10:41 AM +1000 2000/3/31, Carl Makin wrote:
> heh, the buzzword for this is "Dynamic Failover". :) In management
> circles where the current focus is on 24x7, this is seen as a distinct
> advantage.
Okay, then I'd certainly like to have that.
> "Dual Pathing" the buzzword for us
On Wed, 29 Mar 2000, Brad Knowles wrote:
> At 4:28 PM -0800 2000/3/28, Matthew Jacob wrote:
> > Yes, we very much has considered this. What's your issue about this, per se?
> Myself, I just need to be able to tell the system that SCSI ID x
> LUN y is actually the same logical device as
At 9:51 PM -0800 2000/3/28, Matthew Jacob wrote:
> What's harder is *how* to use it. There are no particular hooks in FFS to
> handle the multiple paths simultaneously with any coherency (for performance
> reasons, should you want to do so and could prove that it'd be worthwhile),
> nor are t
At 3:24 PM +1000 2000/3/29, Carl Makin wrote:
> There doesn't seem much point in using VINUM with an external RAID5 box
> (although we use VINUM a lot on other machines).
Speaking only for myself and the Comparex D1400 (Hitachi DF400)
unit that I've been playing with so far, there is
At 4:28 PM -0800 2000/3/28, Matthew Jacob wrote:
> Yes, we very much has considered this. What's your issue about this, per se?
> Right now there's no framework code to directly exploit or prohibit multiple
> paths to the same disk, whether via Fibre Channel or SCSI.
Myself, I just ne
>
> On Tue, 28 Mar 2000, Matthew Jacob wrote:
>
> > Umm, okay. Is this with Veritas DMP or VCS?
>
> Good question. DMP I think. I'm not sure what VCS is.
Veritas Cluster Server
>
> > an active-active configuration. If you use Greg Lehey's VINUM in FreeBSD, I'm
> > not clear about what it'
On Tue, 28 Mar 2000, Matthew Jacob wrote:
> Umm, okay. Is this with Veritas DMP or VCS?
Good question. DMP I think. I'm not sure what VCS is.
> an active-active configuration. If you use Greg Lehey's VINUM in FreeBSD, I'm
> not clear about what it's role in terms of recognizing redundant pat
> On Tue, 28 Mar 2000, Matthew Jacob wrote:
>
> > Yes, we very much has considered this. What's your issue about this, per se?
>
> Well, the driver for asking was my management asking if FreeBSD supported
> this, as we're going to do it on AIX (with the Dual Pathing Option) and
> with Solaris
Hi Matthew,
On Tue, 28 Mar 2000, Matthew Jacob wrote:
> Yes, we very much has considered this. What's your issue about this, per se?
Well, the driver for asking was my management asking if FreeBSD supported
this, as we're going to do it on AIX (with the Dual Pathing Option) and
with Solaris (r
Yes, we very much has considered this. What's your issue about this, per se?
Right now there's no framework code to directly exploit or prohibit multiple
paths to the same disk, whether via Fibre Channel or SCSI.
On Wed, 29 Mar 2000, Carl Makin wrote:
>
> Is anyone working on/considering this?
Is anyone working on/considering this?
I'm about to start hooking FreeBSD boxes up to a *big* disk array which
has the ability to make LUNS appear on multiple interfaces. Being able to
access LUNS via multiple paths could be a reasonable performance gain, as
well as enhancing reliability.
Car
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