Need help with MOD Disk copying Post: 302413927

Sponsored Content

Special Forums Hardware Filesystems, Disks and Memory Need help with MOD Disk copying Post 302413927 by drew_holm on Sunday 18th of April 2010 11:36:00 AM

04-18-2010

Registered User

Need help with MOD Disk copying

Hello,

we are running Irix 6.5 on our octane/sgi computers - these computers come with an external Sony MOD drive attached via a scsi cable. We have backed info to 2.3 gig MOD disks over the years and woule like to duplicate the MOD's. I believe there are 3 ways to do this:

add a second drive to the SGI possibly using the instructions at Installation Guide SGI. System Administration. Adding a magneto-optical drive to the computer and make copies/clones of our current MOD disks. (I believe once we physically attach another MOD drive we will have to 'load' the drive(s) and enter some commands that copy the first MODs' disk and then transfer to the second MODs' disk. We would also want to verify the files made it to the new MOD disk a list of the files with details).
I also understand there are MOD disks duplicators that will do the job (minus the verification step?)
Copy all of the MOD's data to our harddrive, eject the original MOD, put in a new MOD and make a new copy to the MOD drive and verify.

We could use any/all help with the above and have limited IRIX skills -

Thanks in advance

Steve

drew_holm

View Public Profile for drew_holm

Find all posts by drew_holm

5 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

copying oracle tables from raw disk

I have been tasked with archiving Oracle tables. The data is on raw devices, and possibly will span multiple logical volumes. Has anyone ever had to do this? How did you accomplish it? Any references to accomplish this would be greatly appreciated. Thanks,

2. UNIX for Dummies Questions & Answers

Copying files unto a usb pendrive/external disk from Solaris 9

Hi all, Can anybody help me with how I can connect a usb pendrive or external disk to a Sun Server which runs on Solaris 9? I am able to connect the usb drive to a windows server easily and copy files but am wondering if it is possible to do that with Solaris. Any help will be appreciated. thanks.

3. UNIX for Advanced & Expert Users

Listing/copying files from magnetic optical disk

I am trying to list the name of files on an MOD - I use the command tar vtf /MOD_DRIVE|more and I get a nice list of filenames/directories on this particular MOD. When I put in another MOD that contains software options I get the error "directory checksum error". I would like to be able to...

4. Solaris

Solaris 6.5 MOD disk copy help needed

Hello, we are running Irix 6.5 on our octane/sgi computers - these computers come with an external Sony MOD drive attached via a scsi cable. We have backed info to 2.3 gig MOD disks over the years and woule like to duplicate the MOD's. I believe there are 3 ways to do this: add a second...

5. Solaris

Copying disk - dd or lucreate?

Got server that I want to have an 'image' of disk to keep in case of failure. What I want to be able to do is, in the event of disk failure, remove system disk replace with cloned disk (same slot) and reboot. Trouble is I cant take this server down to single user. Is dd still a viable...

LEARN ABOUT V7

rp

RP(4)							     Kernel Interfaces Manual							     RP(4)

NAME

       rp - RP-11/RP03 moving-head disk

DESCRIPTION

       The  files  rp0 ... rp7 refer to sections of RP disk drive 0.  The files rp8 ... rp15 refer to drive 1 etc.  This allows a large disk to be
       broken up into more manageable pieces.

       The origin and size of the pseudo-disks on each drive are as follows:

	    disk start	   length
	    0	 0    81000
	    1	 0    5000
	    2	 5000 2000
	    3	 7000 74000
	    4-7  unassigned

       Thus rp0 covers the whole drive, while rp1, rp2, rp3 can serve usefully as a root, swap, and mounted user file system respectively.

       The rp files access the disk via the system's normal buffering mechanism and may be read  and  written  without	regard	to  physical  disk
       records.   There  is also a `raw' interface which provides for direct transmission between the disk and the user's read or write buffer.  A
       single read or write call results in exactly one I/O operation and therefore raw I/O is considerably more efficient  when  many	words  are
       transmitted.   The  names of the raw RP files begin with rrp and end with a number which selects the same disk section as the corresponding
       rp file.

       In raw I/O the buffer must begin on a word boundary.

FILES

       /dev/rp?, /dev/rrp?

SEE ALSO

       hp(4)

BUGS

       In raw I/O read and write(2) truncate file offsets to 512-byte block boundaries, and write scribbles on	the  tail  of  incomplete  blocks.
       Thus, in programs that are likely to access raw devices, read, write and lseek(2) should always deal in 512-byte multiples.

																	     RP(4)