Video Screencast Help
Protect Your POS Environment Against Retail Data Breaches. Learn More.

query

Created: 07 Feb 2013 | 6 comments

I was reading the Shared storage guide.Below i was not able to understand

 

 

The operation, which is one of the following:
The host on which the script is executed needs SCSI access to the
drive until it is released.
RESERVED
Informational only. It does not change the fact that the host that
reserved the drive needs SCSI access.
ASSIGNED
RELEASED Only the scan host needs SCSI access to the drive.
The host that executes the script has become the scan host.Ahost
should not become a scan host while the drive is RESERVED.
The scan host may change between a RESERVED operation and a
RELEASED operation.
SCANHOST
 
  1. Scan host basically tells the EMM server that this drive(abc) is unassigned and if a job comes please assign this drive to the job?
  2. If the scan host is down,EMM will automatically pick one of the media server and make it a SCAN host?
  3. Every job has a same  scan host untill a problem occurs?

Comments 6 CommentsJump to latest comment

Marianne's picture

Nikhil, we have been through this before.

https://www-secure.symantec.com/connect/forums/shared-drive 

https://www-secure.symantec.com/connect/forums/scan-hosts 

https://www-secure.symantec.com/connect/forums/scan-host

Please show us 'vmdareq' output on your master server.

We will help you to understand SCANHOST, RESERVED, ASSIGNED, etc. in YOUR environment.

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

NIKHIL2346565959's picture

Ok.I am provididng the output.Then we will have a look.

NIKHIL2346565959's picture

 

 
Drive002 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
Drive003 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
drv1-DRV01 - RESERVED on Sun 07 feb 2013 05:28:17 PM EDT
     pnl2. SCAN_HOST UP
     pnl4 RESERVED UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
drv1-DRV02 - RESERVED on Sun 07 feb 2013 01:57:21 PM EDT
     pnl4 RESERVED SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
drv1-DRV03 - RESERVED on Sun 07 feb 2013 04:58:29 PM EDT
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 RESERVED UP
     pnl9 UP
drv1-DRV04 - RESERVED on Sun 07 feb 2013 05:17:47 PM EDT
     pnl4 RESERVED SCAN_HOST UP
     pnl5 UP
    pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
drv1-DRV05 - RESERVED on Sat 06 feb 2013 07:16:48 AM EDT
     pnl2. UP
     pnl4 SCAN_HOST UP
     pnl5 RESERVED UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
drv1-DRV06 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
drv1-DRV07 - RESERVED on Sun 07 feb 2013 10:35:32 AM EDT
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 RESERVED UP
     pnl9 UP
drv1-DRV08 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV01 - RESERVED on Sun 07 feb 2013 04:34:29 PM EDT
     pnl2. SCAN_HOST UP
     pnl4 UP
     pnl5 RESERVED UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV02 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV03 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV04 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV05 - RESERVED on Sun 07 feb 2013 05:17:48 PM EDT
     pnl2. SCAN_HOST UP
     pnl4 RESERVED UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV06 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV07 - RESERVED on Sun 07 feb 2013 05:12:33 PM EDT
     pnl4 RESERVED SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV08 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV09 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23868 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
dr2-DRV10 - AVAILABLE
     pnl4 SCAN_HOST UP
     pnl5 UP
     pnw876 UP
     pnw877 UP
     pnw23869 UP
     pnl8 UP
     pnl9 UP
 
NIKHIL2346565959's picture
  1. What if my scan host  pnl2 is down?Which will be assigned new SCAN host?
  2. Scan host basically tells the EMM server that this drive(abc) is unassigned and if a job comes please assign this drive to the job?
  3. If the scan host is down,EMM will automatically pick one of the media server and make it a SCAN host?
  4. Every job has a same  scan host untill a problem occurs?
CRZ's picture

Simply amazing that you, Arun K, nike_new and Andy2345 all have the exact same questions!  It's almost like you share one brain.

Something weird in your "output," though - 06 Feb 2013 isn't a Saturday, and 07 Feb 2013 isn't a Sunday.

Actually, I would have expected to see "feb" capitalized in this output as well.  Is it possible these logs are from October 2012 and rather poorly edited?  And if THAT is the case, did they really come from an environment you are administering which is live right now?  Because...well, I guess I'm just a suspicious character.  Also, one wonders why you'd go to all this trouble when it's so much easier to just consult the documentation and get your answer, other than the fact that there would be less points all around that way...

(Anyone who is concerned that I'm not answering the question is free to visit the other previously linked threads, where several are available.)


bit.ly/76LBN | APPLBN | 75LBN

mph999's picture

Hmm, top marks CZ, you don't miss much 

From my svr

 

root@nbmaster00 logs $ vmdareq
IBM.ULT3580-TD4.000 - RESERVED on Fri 08 Feb 2013 04:23:21 PM PST
     nbmaster00 RESERVED SCAN_HOST UP
     nbmedia00 UP
 
Yes, upper case letters, and the dates are wrong ...
 
As you say, the answers are in the SSO guide.

 

 

Regards,  Martin
 
Setting Logs in NetBackup:
http://www.symantec.com/docs/TECH75805