sd(7) DG/UX R4.11MU05 sd(7)
NAME
sd - SCSI Disk
SYNOPSIS
sd(parent-bus[,id[,lun]])
DESCRIPTION
The sd device driver accesses a Small Computer Systems Interface
(SCSI) disk drive device. Non-removable hard disks are supported,
along with several classes of removable media: CLARiiON disk arrays;
floppy diskettes; CD-ROM; optical WORM; and erasable magneto-optical
(MO).
The currently supported models of non-removable hard disks are:
Model Capacity Width Height Features
Number (inches)
6539 179 MB 5.25 half 1,S
6554 662 MB 5.25 full 1,S
6662 332 MB 5.25 half 1,S
6685 1 GB 5.25 full 1,S
6716 1.4 GB 5.25 full 2,S
6740 1 GB 5.25 full 1,D
6796 520 MB 3.5 half 2,S
6799 520 MB 3.5 half 2,D
6802 1 GB 3.5 1 inch 2,S
6805 1 GB 3.5 1 inch 2,D
6841 2 GB 3.5 half 2,S,F,54
6842 2 GB 3.5 half 2,D,F,54
6843 2 GB 3.5 half 2,D,F,W,54
6861 1 GB 3.5 1 inch 2,D,F,W,54
61000 520 MB 3.5 1 inch 2,S,D,W
61005 1 GB 3.5 1 inch 2,S,D,F,W,72
61006 2 GB 3.5 1 inch 2,S,D,F,W,72
61007 4 GB 3.5 half 2,S,D,F,W,72
61012 2 GB 3.5 half 2,S,D,F,W,72
61014 4 GB 3.5 half 2,S,D,F,W,72
61021 2 GB 3.5 half 2,S,D,F,W,72
61024 4 GB 3.5 half 2,S,F,W,72
61030 2 GB 3.5 half 2,S,F,W,72
The Features listed above are:
1: SCSI-1 support
2: SCSI-2 support
S: Single-ended SCSI support
D: Differential SCSI support
F: Fast SCSI support
W: Wide SCSI support
54: 5400 RPM drive
72: 7200 RPM drive
The currently supported models of removable media are:
Model Medium Capacity Width
Number Type (inches)
5070DR WORM 2.4 GB 12
5070DS WORM 900 MB 5.25
6552 CD-ROM 600 MB 5.25
6562 floppy 720,1440 KB 3.5
6563 floppy 360,720,1200 KB 5.25
6627 MO 590,650 MB 5.25
61018 CD-ROM 600 MB 5.25
61021 SCA 2 GB -
7906 CLARiiON 2.5 GB -
7907 CLARiiON 2.5 GB -
7910 CLARiiON 5.0 GB -
7911 CLARiiON 5.0 GB -
79012 CLARiiON 4.0 GB -
79013 CLARiiON 9.0 GB -
Other models may also be supported. If you have a device whose model
number does not appear in the list above, consult the hardware
documentation for that device to verify DG/UX support.
To configure an sd device, you must add a device name entry of the
form described above to the DG/UX system configuration file. The
parameters in a device name have the following meanings:
· The parent-bus parameter is itself a device name, representing
the SCSI bus device to which the device is attached (ncsc(0) or
dgsc(vme(1),B,6), for example). There is no default value for
this parameter; it must always be specified explicitly. See the
scsi_bus(7) man page for a list of SCSI bus device drivers.
· The id parameter is a hexadecimal number in the range 0 through F
which represents the SCSI ID used by the device on parent-bus.
The default value for id is 0. Note that id values above 7 are
possible only if the parent-bus device supports Wide SCSI
addressing. Consult your hardware documentation to determine if
it does.
· The lun parameter is a hexadecimal number in the range 0 through
7 which represents the SCSI Logical Unit Number (LUN) used by the
device within its id. The default value for lun is 0.
The sd driver provides no bad block remapping. See the vdm(7) man
page for details on how to set up a bad-block remap area using the
Virtual Disk Manager.
FILES
Each sd device creates a single character-special device node when it
is configured, with the pathname:
/dev/rpdsk/sd(parent-bus,id,lun)
Each sd device also creates a single block-special device node when
it is configured, with the pathname:
/dev/pdsk/sd(parent-bus,id,lun)
Each sd floppy device also creates character-special and block-
special device nodes with a suffix. The sd floppy device nodes
without the s suffix represent the entire diskette, while the floppy
device nodes with the s suffix represent the entire diskette
excluding the first cylinder.
/dev/rpdsk/sd(parent-bus,id,lun)s
/dev/pdsk/sd(parent-bus,id,lun)s
The chk.devlink command is responsible for creating and maintaining
an additional "short-name" link to each such block-special and
character-special device node. See the chk.devlink(1M) and
devlinktab(4M) man pages for details.
EXAMPLES
The following entry in a DG/UX configuration file configures a SCSI
disk device at Logical Unit Number 0 of SCSI ID 2 on the SCSI bus
named ncsc(1):
sd(ncsc(1),2)
SEE ALSO
scsi_bus(7), dsk(7), rdsk(7), floppy(7), chk.devlink(1M),
devlinktab(4M).
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