In article <2sr674F1nupn8U1@uni-berlin.de>,
Vikas Agnihotri <usenet@vikas.mailshell.com> wrote:
>Rytis Sileika wrote:
>>> Yes! It works!

>Have these 3310s and 3510s (Workgroup storage) line been on the market
>for very long?

Yes.

> How are the hardware RAID controllers? Are they any
>better than the old A1000 array which I have currently?

Yes.


>My only concern with the 3510 is that it has a FC and not SCSI
>interface. I dont have any experience with FC and SCSI just "feels" more
> comfortable and familiar. Has FC matured to the point of being used in
>mission criticial, large volume systems?

Yes.


>>> When you grow the 3310 beyond one JBOD you loose host connections, and
>>> 'there can be only one' after that.
>
>Not sure what you mean by that? Can you please elaborate?

The 3310 and 3510 with hardware RAID controllers can be expanded with
JBOD arrays like an old A3500 making it to appear as one large array
with >12 disks.

>Isnt 740MB/sec a little on the slower side? Maybe I dont have my facts
>right, but is that the state of the art in storage technology these days?

Don't get tangled up in MB/s figures.

First of all the 3310 is Ultra 160 SCSI based while the 3510 is 2GBit FC.
If you really need performance you can connect up to 8 FC cards from one
server and Solaris will stripe the load across the cables to a 3510.

The 3510 is twice as fast as a 3310 even for just one host.
The 3310 is 3-4 times faster that an A1000.
The 3310 will give you better availability than a A1000. The 3510 will
give you even better availability.

You can expand a 3510 with a total of 8 trays with good performance.
You can only add one extra tray to the 3310 without loosing performance.

/Fredrik
--
Fredrik Lundholm
dol @ ce.chalmers.se