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тАО11-01-2005 03:29 AM
тАО11-01-2005 03:29 AM
DGA DKA DSA acronyms
Cheers
Rasmus
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тАО11-01-2005 03:34 AM
тАО11-01-2005 03:34 AM
Re: DGA DKA DSA acronyms
If you mean VMS device names then its
Dxy
D for disk
x=G for fibre channel, K for SCSI, I for DSSI etc
y=A,B,C, indicates which bus (unless port allocation classes are in use).
Purely Personal Opinion
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тАО11-01-2005 03:58 AM
тАО11-01-2005 03:58 AM
Re: DGA DKA DSA acronyms
DS means D for Disk, S for Shadow; so DS devices are ShadowSets.
DR used to be Massbuss, but nowadays usually is is Digital RAID
DU is varius DSA-compliant drives, (as is DI)
DV is floppy drive, DQ is IDE drive (floppy or CD)
There might well be others still..
Proost.
Have one on me.
jpe
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тАО11-01-2005 10:17 AM
тАО11-01-2005 10:17 AM
Re: DGA DKA DSA acronyms
it's usually written as:
ddcu
where "dd" is the device type prefix. 2 letters and registered with a central naming authority. Disk devices usually start with "D". There are many different prefixes. I can say for certain that all of DA, DB, DF, DG, DI, DJ, DK, DL, DP, DQ, DR, DS DU and DV have been used at some time.
They are not acronyms as such, just a code used by drivers to identify different disk types & controler technologies.
The next letter "c" is the controller "A" to "Z", allocated sequentially as the system finds them. Finally the unit number "u", generally 0 through 9999, but some devices have extended the range.
You'll find other device names, and classes of device name. For example those starting with "E" are generally ethernet devices EI, ES, EW, EX,... There are also mailboxes starting with "MB", terminals TN, TT, TX and tape devices MD, MK, MU (I think it's "M" for "Magnetic Tape").
Although the naming scheme is *reasonably* consistent, there are always exceptions to any rule you can glean from looking at SHOW DEVICE. Don't try to read too much into it. A good place to find out about devices is the documentation for the $GETDVI system service.
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тАО11-01-2005 07:31 PM
тАО11-01-2005 07:31 PM
Re: DGA DKA DSA acronyms
I always liked Inforserver devices the best: DAD and MAD :-)
cu,
Martin
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тАО11-02-2005 01:22 AM
тАО11-02-2005 01:22 AM
Re: DGA DKA DSA acronyms
It's also possible to encounter "disks" that use the LD and VD virtual disk drivers, which don't come up as a "D" anything.
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тАО11-02-2005 02:14 AM
тАО11-02-2005 02:14 AM
Re: DGA DKA DSA acronyms
//Rasmus
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тАО11-02-2005 02:46 AM
тАО11-02-2005 02:46 AM
Re: DGA DKA DSA acronyms
cu,
Martin
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тАО11-02-2005 03:31 AM
тАО11-02-2005 03:31 AM
Re: DGA DKA DSA acronyms
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тАО11-02-2005 03:57 AM
тАО11-02-2005 03:57 AM