Plz Help! More disk!! Post: 33624

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Top Forums UNIX for Advanced & Expert Users Plz Help! More disk!! Post 33624 by janr on Monday 13th of January 2003 07:08:13 AM

01-13-2003

Registered User

yes you can

Hi,

yes you can have 3 disk in your system, all you need is a free scsi adres.
those adresses run from 0 upto 7, 7 is mostly the adres of the scsi adaptor so there a 7 (0 - 6) free adresses for scsi devices like disks and tape drives.

1 After you selected a free scsi adres
when you do not know whith adresses are free you
can run the `probe-scsi-all` command on the
OK-prompt.

2 you can set this adress on the back of your device.

3 shutdown and power-off your system.

4 connect your new device in the scsi chain, do not forget the
terminator.

5 turn on the power of your system and all the devices and go to
the OK-prompt

6 on the OK-prompt you can check your scsi configuration, again
with the `probe-scsi-all` command.

7 when your confuration is OK, boot your system with the -r
option; type `boot -r` on the OK-prompt.
your system is booting up an re-scanning your system
for new devices, and also creates the device files in
the /dev/... directories.

8 know your disk is ready to use.

use;
`format` to create disk partions,
`newfs` to create filessyems on the partions.

janr

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LEARN ABOUT CENTOS

scsi-rescan

RESCAN-SCSI-BUS.SH(1)						   User Commands					     RESCAN-SCSI-BUS.SH(1)

NAME

       rescan-scsi-bus.sh - script for adding and removing SCSI devices without rebooting

SYNOPSIS

       rescan-scsi-bus.sh [options] [host [host ...]]

OPTIONS

       -a, --alltargets
	      scan all targets, not just currently existing [default: disabled]

       -d     enable debug			 [default: 0]

       -l     activates scanning for LUNs 0--7	 [default: 0]

       -L NUM activates scanning for LUNs 0--NUM [default: 0]

       -w, --wide
	      scan for target device IDs 0--15	 [default: 0--7]

       -c     enables scanning of channels 0 1	 [default: 0 / all detected ones]

       -r, --remove
	      enables removing of devices	 [default: disabled]

       -f, --flush
	      flush failed multipath devices	 [default: disabled]

       -i, --issue-lip
	      issue a FibreChannel LIP reset	 [default: disabled]

       -u, --update
	      look for existing disks that have been remapped

       -s, --resize
	      look for resized disks and reload associated multipath devices, if applicable

       --forcerescan
	      rescan existing devices

       --forceremove
	      remove and readd every device (DANGEROUS)

       --nooptscan
	      don't stop looking for LUNs is 0 is not found

       --color
	      use coloured prefixes OLD/NEW/DEL

       --hosts=LIST
	      scan only host(s) in LIST

       --channels=LIST
	      scan only channel(s) in LIST

       --ids=LIST
	      scan only target ID(s) in LIST

       --luns=LIST
	      scan only lun(s) in LIST

       --sync, --nosync
	      issue a sync / no sync [default: sync if remove]

       --attachpq3
	      tell kernel to attach sg to LUN 0 that reports PQ=3

       --reportlun2
	      tell kernel to try REPORT_LUN even on SCSI2 devices

       --largelun
	      tell kernel to support LUNs > 7 even on SCSI2 devs

       --sparselun
	      tell kernel to support sparse LUN numbering

	      Host numbers may thus be specified either directly on cmd line (deprecated) or or with the --hosts=LIST parameter (recommended).

       LIST: A[-B][,C[-D]]... is a comma separated list of single values and ranges (No spaces allowed.)

SEE ALSO

       rescan-scsi-bus.sh Homepage: http://www.garloff.de/kurt/linux/#rescan-scsi

       sg3_utils Homepage: http://sg.danny.cz/sg

rescan-scsi-bus.sh 1.57 					    leden 2014						     RESCAN-SCSI-BUS.SH(1)