Re: [OT] EMC as a performance system (was Re: Install and RAID)
On Sun, Jan 28, 2001 at 09:08:25PM -0800, Stephen Zander wrote:
> >>>>> "Adam" == Adam McKenna <firstname.lastname@example.org> writes:
> Adam> No, but mainframe-like mega-IO systems such as EMC and
> Adam> NetApp are.
> EMC does not supply mega I/O bandwidth. A standard EMC has two
> physical channels between it and the system it supports and, on the
> far side the cache controller, has nothing better than SCSI-2
> connecting disk strings together. It also, as someone else mentioned,
> uses very large drive sizes making any sort of data partioning next to
I don't know what model you worked with, but the Symmetrix I worked with had
8 SCSI channels (2 4-channel cards) with room for 8 more. You could also put
2-channel fibre-channel cards in for a total of 8 fibre-channel interfaces.
These channels could be bound together on the host via a program called EMC
Powerpath. And this was a lower-end EMC. (It only had around 300 gigs)
Adam McKenna <email@example.com> <firstname.lastname@example.org>