Dell PowerVault 136T & jbconfig

[jbarbone]

Has anyone setup Legato 7.1 with a Dell PowerVault 136T Library? I am having problems with jbconfig telling me it cant find SCSI drives or they have already been setup in a Microsoft environment. INQUIRE found all three LTO2 drives, but for some reason, jbconfig is not working properly. Any ideas?

 

[605]

Have you stopped the Removable Storage Manager service?

Basically, NW will only need what MS installs. So if you see
\\.\Tape0 .. \\.\Tape2 at the right hand side of the inquire
output, configuration is not a problem.

If you see something like \\.\changer0 next to the jukebox entry,
this is wrong. Stop RSM. You might also restart the server to make this
device name going away.

 

[jbarbone]

I am not seeing any Autochangers, but I do see the drives listed.

The problem I am having is getting Legato to put a tape into the drive for the first time. I had the library do a scan to read the bar codes, but when I try to label a tape, it says there is no tape in the drive. Well, no, it's not, that's what I was hoping the label command would do. Get a tape from a slot and label it.

Any ideas?

 

[jbarbone]

Ok, first, I am a little embarrased. The SCSI cables were not plugged in properly, once they were, then the #2 option worked fine. However, I am having a problem getting it to recognize 6 LTO2 drives. It says the first three can be autoconfigured, but then it prompts me for the names of the other three. I cannot, for the life of me, figure out what it is looking for. Finally, I got frustrated and pulled the three drives out and everything works just fine. Except it's all SCSI connected to the network at 100MB, therefore is slow.

Thanks everyone for your help. I really appreciate it. Im sure I will be asking for help again in the future.

 

[comtec17]

How are the drives SCSI connected?

You say that you have 6 drives so you have at least 3 SCSI adapters in your machine correct?

Standard practice is to have no more than 2 SCSI drives +1 Robot on a SCSI bus.

 

[605]

Your statements are a bit contradictionary:

- you worked with jbconfig but
- you also worked with the automatic configuration option

Let us just assume that autoconfig has the limitation to detect only 3 devices,
why don't you just use jbconfig again ?


With respect to the throughput you could use the "bigasm" test to find out which
data rate your system will support.
Please find info how to do that in the "Performance Tuning Guide", perftune.pdf, which you may download from Legato's
web server.

 

[wallace88]

lets see the inquire output.

also, as 605 suggested, turn off autoconfigure, and just run jbconfig to configure all 6 drives.

 

[jbarbone]

ComTec:
Dell recommends systems with more than three drives use two SCSI Channels. I have a dual SCSI channel Adaptec card.


605:
I may have inproperly described my situation. I am using jbconfig with option #2 to autoconfigure a SCSI Jukebox. When I do that, it only auto configs three drives and asks me to manually name the other three, however, nothing I name it works. I need a second SCSI cable to connect the remaining three drives to the second SCSI channel and it will work properly. I was only trying to get the three drives working at first so I could see what type of performance I was getting.

jbconfig will not let me move on past the other three drives without properly configuring them manually. However, I cannot.

How do I turn off the autoconfigure?

 

[605]

O.K., this is not the auto-config routine i meant. Option 2
is called "Autodetected SCSI Jukebox" not "Autoconfigured SCSI Jukebox".

This is how autoconfiguration works: Within the NW Administrator window,
there is another option for the the server resource. Using
the setting in the
"Device Configuration" tab, you trigger NW to detect and configure
all devices full-automatically.

Another alternative is to run jbconfig option #4 "SJI Jukebox" which
only asks you for a few more questions.

However and once again - all methods will only work without
problems when you see
Windows tape handles (\\.\Tapen) for ALL tape devices.

 

[jbarbone]

Again, please forgive my ignorance, but I thought you always had to use jbconfig, regardless if the OS can see them or not. So, I dont even need to worry about jbconfig? Just make sure they all show up as devices?

Thanks again. I will try that tomorrow when I receive my SCSI cable. I will also run 'bigasm' to figure out where I stand connectivity wise.

 

[605]

No, as NW does not use proprietary device drivers, you always must ensure
that the OS can see them before you run jbconfig or the autoconfig method.