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Alpha server DS25 : device name for SCSI DAT device ?

berlioz
Regular Advisor

Alpha server DS25 : device name for SCSI DAT device ?

Hello,

I'm trying to do an image backup but i don't know how to find the device name for the SCSI DAT device on my Alpha DS25 server

Thanks in advance
17 REPLIES
Lokesh_2
Esteemed Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

Hi,

Tape devices start with letter "M" . Give command $SHO DEV M or $SHO DEV MK . It will list tape devices. If you are not able to find out. Post the result of above commands.

Thanks & regards,
Lokesh Jain
What would you do with your life if you knew you could not fail?
Kris Clippeleyr
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?


berlioz,

If you do a SHOW DEVICE, you'll see all the devices known to VMS. Look for something starting with an M (probably the tape is an MK device (SCSI tape unit)).

Greetz,

Kris
I'm gonna hit the highway like a battering ram on a silver-black phantom bike...
Ian Miller.
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

SHOW DEVICE MK/FULL will show details of each scsi connected tape drive. The first line will show the device name. For a Digital DAT drive it will be TLZ10/TLZ09/or similar
____________________
Purely Personal Opinion
berlioz
Regular Advisor

Re: Alpha server DS25 : device name for SCSI DAT device ?

I just have mbaxx (xx from 1 to 71) and mpa0: but nothing like mk
Kris Clippeleyr
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

Berlioz,

The MBA devices are mailboxes. I'm not sure what the MP device is.

Is the tape unit well connected?
Is it visible at the console prompt? (You know the >>>)

Maybe your tape unit's SCSI-id conflicts with another device.

Could you give the output of the SHOW DEVICE command at the console prompt?

Greetz,

Kris
I'm gonna hit the highway like a battering ram on a silver-black phantom bike...
berlioz
Regular Advisor

Re: Alpha server DS25 : device name for SCSI DAT device ?

Kris,

in boot mode i've the following device :

dqa0 : CD/DVD
dva0 : diskette ?
dya0 : CPQCISS my raid disk controller
ega0 : ethernet 1
eia0 : ethernet 2
pka0 : SCSI Bus ID 7
pkb0 : SCSI Bus ID 7
pya0 : ?

but nothing like mk*
Ian Miller.
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

what sort of DAT drive, what cable and what SCSI interface - I wonder if there's an incompatability there.
Also check that all connectors are properly plugged in with the clips.
____________________
Purely Personal Opinion
berlioz
Regular Advisor

Re: Alpha server DS25 : device name for SCSI DAT device ?

It's an HP Storage works DAT tape drive (hot plug) installed (2 slots) in a BA610 disk drive cage with a Smart array 5300A backplane RAID controller
Ian Miller.
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

Is the DAT drive is connected to the RAID controller or two the scsi busses represented by PKA, PKB?

RAID controllers don't usually support tape drives.
____________________
Purely Personal Opinion
berlioz
Regular Advisor

Re: Alpha server DS25 : device name for SCSI DAT device ?

all my disk cage (3 disk in RAID 5 mode and my DAT tape drive) is controlled by my RAID controller...
Ian Miller.
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

parhaps you need to run the config program for the raid controller?
Any chance of connecting the DAT to another SCSI bus?
____________________
Purely Personal Opinion
berlioz
Regular Advisor

Re: Alpha server DS25 : device name for SCSI DAT device ?

under this configuration program i just see disk drive...

damned... i've a bad material configuration... i probably need a DAT connected in an other SCSI bus...

Thanks for all...
Antoniov.
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

If your DAT is connected to BA controller, may be assume disk prefix (like DK); typing
$ SHO DEV D
do you see some unknown disk?

Antonio Vigliotti
Antonio Maria Vigliotti
Ian Miller.
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

I think the Smart array 5300A backplane RAID controller does not like tape drives. You need to connect it to one of the other two scsi buses. You will proably have to put it in another storageworks enclosure to do that.
____________________
Purely Personal Opinion
Uwe Zessin
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

MPA0: is a template for the PIPE devices

$ pipe exit | show logical sys$pipe
"SYS$PIPE" = "_node$MPA4:" (LNM$PROCESS_TABLE)
$
.
Lawrence Czlapinski
Trusted Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

We have a tower mounted DAT. It starts with MK. Your system is not seeing the tape drive. Since it is in a tower it should be connected. The raid controller we have on our DS20 expects the units to be disk. The raid menu is Digital Disk Array Controller - Configuration Utility.
Willem Grooters
Honored Contributor

Re: Alpha server DS25 : device name for SCSI DAT device ?

Berlioz,

Normally - in my inderstanding ;-)) confi is:

CPU --> SCSI A +(slot1)--> Raid --> disk (only!)
+(slot2)--> other device (like tape)
+(slot3)--> other device (like tape)
+ (ASO)
--> SCSI B etc...

So you said it:


damned... i've a bad material configuration... i probably need a DAT connected in an other SCSI bus...


You do..

Willem
Willem Grooters
OpenVMS Developer & System Manager