|
Home > Archive > Data Storage > December 2005 > Setting up Brocade 2800 with JBOD
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
Setting up Brocade 2800 with JBOD
|
|
|
| Hi!
I'm new to Fibre Channel switches and have a problem seting up a small
SAN for evaluating a Cluster-Filesystem Software. The SAN consists of a
JBOD With 10 public LUNs and three computers (two SGI Octanes and one
Win XP PC).
After I recieved the switch, I have reset it to factory defaults and
erased all zoning information. Now I can see all equipment from the
switch. The JBOS is preseted as an L-Port, the Octanes as F-Ports and
the PC as L-Port. With the "nsShow" command as LUNs on the JBOD and PC
loops are shown BUT:
Neither the Octanes nor the PC sees any other devices, esp. not the
JBOD LUNs!
Do I have some pricipal problem in understanding what is going on or am
I missing some comfiguration detail?
What I would like to have is to behave the Brocade switch just like an
Ethernet switch, i.e. plug a device in, and it "sees" all other
devices.
Thanks in advance for any pointers and best regards
Olaf
| |
| ewilts 2005-12-13, 5:49 pm |
| olfp wrote:
> I'm new to Fibre Channel switches and have a problem seting up a small
> SAN for evaluating a Cluster-Filesystem Software. The SAN consists of a
> JBOD With 10 public LUNs and three computers (two SGI Octanes and one
> Win XP PC).
>
> After I recieved the switch, I have reset it to factory defaults and
> erased all zoning information. Now I can see all equipment from the
> switch. The JBOS is preseted as an L-Port, the Octanes as F-Ports and
> the PC as L-Port. With the "nsShow" command as LUNs on the JBOD and PC
> loops are shown BUT:
>
> Neither the Octanes nor the PC sees any other devices, esp. not the
> JBOD LUNs!
>
> Do I have some pricipal problem in understanding what is going on or am
> I missing some comfiguration detail?
I'm not a Brocade switch expert by any stretch of the imagination
(we're an all-McData shop here), but there is a basic level of
understanding that I think you're missing.
There are 2 key components to making SAN storage available. First,
there's the zoning aspect. All zoning really does is to allow a server
to see another server or disk controller on the SAN. Zoning has no
knowledge of individual LUNs connected to a storage controller.
The second key component has multiple names but is usually documented
as "LUN masking". What this does is to present an individual LUN to a
SAN host. This is typically done by World Wide Name. If this feature
wasn't available, you'd have no security at all on the SAN! Anybody
could write to anybody else's disk.
You didn't say what kind of storage controller you've plugged into the
SAN, but you'll need to go to that controller and present the LUNs to
the individual hosts.
> What I would like to have is to behave the Brocade switch just like an
> Ethernet switch, i.e. plug a device in, and it "sees" all other
> devices.
That's what zoning does - you'll see the other hosts and storage
controllers that are in the same zone. Like an Ethernet switch, a
fabric switch doesn't control access to devices that are on the switch.
If you plugged a PC into a switch, you wouldn't want everybody else on
the switch to suddenly be able to read from or write to your disk
drives.
.../Ed
| |
| carmelomcc 2005-12-14, 5:48 pm |
| What type of jbod do you have? Also check the brocade and make sure
quickloop is enabled. Quickloop is the abitrated loop feature in the
brocade and needs to be on to switch loop protocall. The L that yo
spoke of represents loop. The F port status represents a point to
point adapter logging in to the brocade. You want to get all your
devices running the same protocal. So if the jbod is Abitrated loop
set all the hosts to arbitrated loop. After that make sure the switch
has it enabled (quickloop). After that you should be fine. Lun
masking is not needed if all the host will be in the cluster and they
need to see the same devices.
Carmelo
|
|
|
|
|