Re: Backup technologies (was p570- how fast is the I/O throughput??? Compared to an H80)
From: Jose Pina Coelho (eresquigal_at_netcabo.pt)
Date: 12 Jul 2005 00:36:28 GMT
Simon Marchese <firstname.lastname@example.org> wrote in
> TomK wrote:
>> The TG and I would dearly love to see something matching mainframe
>> channel program design and capability -- If I'm backing up data from
>> an ESS on an HBA in slot 1 to a tape drive on an HBA in slot 2 there
>> should be NO requirement for the data to ever leave that PCI-X buss.
>> (yeah, I used to do mainframe I/O config and capacity planning)
> How would that work with filesystems? Would the "channel" have to
> understand the filesystem structure?
Not on stage 1, it would be up to AIX to tell each disk controller which
blocks to send.
I've been (day)dreaming about intelligent controllers (aware of lvm and
jfs/2) that can manage read/write/copy functions without bogging down the
CPU. After all, these days a lot of cards have a lot of horsepower
-- Doing AIX support was the most monty-pythonesque activity available at the time. Eagerly awaiting my thin chocolat mint.