Great news Jim. Thanks for the update.
Since I'm the one who started this pesky thread, I thought it only
appropriate to update the list on our results as well....
We now have our new backup system up and in production. It is comprised of
2 x 8-core T2000s (Solaris 10)
2 x Sun/Emulex 4Gb dual-port FC HBAs
1 x STK L500 library with 4 x HP LTO3 drives (FC)
1 x Brocade 4100 switch with 4Gb SFPs
1 x (old) HDS 5800-series array (/nsr)
I've configured one of the T2000s as the bkup server and the other as a
storage node. In my setup I simply zoned the robotics and drive 0 to the
first HBA port and drive 1 to the second HBA port. I zoned drive 2 to the
first HBA on the storage node machine, and drive 3 to the second HBA.
Did I need 4Gb HBAs? no, but the cost difference was minimal and the
switch can handle them, so why not.
So far, the system is running beautifully. I don't have a huge # of
clients to back up (i.e. < 200) but each of several groups I have contain
about 45 members. By confining my group parallelism to 12 or 18 I typically
keep a couple of drives streaming along very nicely at generally about
45-80 MB/sec through a single gigabit ethernet connection -- not
outstanding, but inline with my throughput expectations for a single gigE
link. (Certainly a lot better than the 5-6 MB/sec I was seeing with the
previous drives (DLT8000.)) If I'm not mistaken I think I reduced my
backup window by 66% and our operational requirements (i.e. tape monkeys)
by 90% by moving to the new media format.
One of the big selling ideas for me with the T2000s was the ability to
trunk a couple of the onboard gigE NICs together to make a fatter pipe,
using Sun Trunking. According to Sun this is not currently possible, but
will be after Solaris 10 Update 3 comes out in late summer 2006. At that
time, the current driver for those NICs (ipge#) will go away and be
replaced instead by the g1000e driver (I think I have that right) which is
supported in Sun Trunking.
-ty
Phillip T. ("Ty") Young, DMA
Manager, Data Center and Backup/Recovery Services
Information Services
i2 Technologies, Inc.
Jim Ruskowsky
<[email protected]
OM> To
Sent by: Legato NETWORKER AT LISTSERV.TEMPLE DOT EDU
NetWorker cc
discussion
<NETWORKER@LISTSE Subject
RV.TEMPLE.EDU> Re: [Networker] SV: [Networker]
sizing a Sun server for a 4xLTO3
tape library
05/11/2006 08:41
AM
Please respond to
Legato NetWorker
discussion
<NETWORKER@LISTSE
RV.TEMPLE.EDU>;
Please respond to
Jim Ruskowsky
<[email protected]
OM>
Tommy and all -
This week has been the week of tweeking and tuning. I am grateful for all
the input and ideas from this group.
Tweak #1
Initially, my default setup had all the data going through a single 2gb
fibre channel to the tape drives - all the clients backing up through a
single fibre channel on the same legato server,ignoring the storage node .
So I updated my storage node affinity on half my servers.
After that fix, we were using a single fibre channel on the main server
and a single fc on the storage node.
Tweak #2
Since legato seems to pick drives sequentially as needs another resouce, I
opted to set up my drives such that the odd number drives go through one
fibre channel, and the even numbers go through the alternate channel. I
set up a set of symlinks (as suggested here in this group) as
/dev/jb/drive## and pointed them to /dev/rmt/##cbn. I also was able to
call my drive## in the sequential order that they are in the tape library
and as legato sees them. Looks so much cleaner now.
After that fix, we are finally using both fibre channels on both machines.
Total throughput remotely possible both machines combined = 8Gb/sec. I'll
be content if I realistically see half that sustained.
Overall, everything is working well. No issues as far as hardware or
software compatability.
I forgot to set up an iostat to capture my throughput overnight. I'll get
that going for tonight - but the results I will be most interested in
myself are for the full backups on the weekend.
More updates to come next week.
Jim
"Tommy Carlsson" <tommy.carlsson AT calvia DOT se> wrote on 05/11/2006 04:59:26
AM:
> Hi Jim!
>
> Are you running some test on T2000 now?
>
> Regards
> Tommy
>
> Från: Legato NetWorker discussion genom Jim Ruskowsky
> Skickat: on 2006-04-19 15:14
> Till: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Ämne: Re: [Networker] sizing a Sun server for a 4xLTO3 tape library
>
> Tommy, Peter, & list -
>
> We are very close to getting some real live data through our SunFire
T2000
> / LTO3 solution - probably in the next couple weeks.
>
> Our setup is
> Networker 7.2.1 running on Solaris 10
> ADIC i2000 with 10 LTO3 drives (connected to fibre switch via 3
> i/o blades @ 2 fibres per blade)
> Two SunFire T2000 - each connected to the fibre switch via 2
> fibres
> We have DDS for all 10 drives, so with the fibre redundancy,
each
> sun server sees each of the 10 drives twice, so networker sees all 10
> drives via 4 different paths
> The SunFires each connect to our backup ethernet switch via
10Gig
> Ethernet.
>
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