[Info-vax] VMS QuickSpecs

[Dirk Munk]

johnson.eric at gmail.com wrote:
> On Friday, August 14, 2015 at 5:48:47 AM UTC-4, Dirk Munk wrote:
>
>> In my view, fibrechannel will stay, and will be the dominant storage
>> interconnect in big datacenters until there is a very different way to
>> connect to (flash) storage.
>
> I just don't see it playing out this way. I see ethernet continuing to eat
> into the high profit margins that sit around these products. The cost
> of 10Gbe, 40Gbe, and ultimately 100Gbe will make it too hard to ignore.
> And the high profit margins of the FC world just leaves them with a big
> target on their backs.
>
> EJ
>


Look at high-end EMC storage, a storage array will support a maximum of 
256 16Gb/s FC ports or a maximum of 128 10Gb/s ethernet ports. Do the 
maths.

32Gb/s fibrechannel is around the corner, 128Gb/sec fibrechannel is on 
the roadmap.

The ethernet protocol for FCoE is far less robust as FC, FCoE didn't 
make it, iSCSI adds the overhead and latency of the IP stack, in most 
situations we don't need it.

FC still is technically superior to anything ethernet can offer at the 
moment.