Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Is verifying recommended when backing up onto a DAT72 tape?

Posted on 2009-07-02
4
Medium Priority
?
297 Views
Last Modified: 2013-12-01
I read in Wikipedia (http://en.wikipedia.org/wiki/Digital_Data_Storage) that in a DAT72 tape drive There are two read heads and two write heads. The read heads verify the data that has been written (recorded). If errors are present, the write heads rewrite the data.  If so, then is verifying the backup after writing necessary?  It seems there is a hardware verify built in.  Verifying doubles the time of the backup, halves the life of the tape and requires that the tape drive be cleaned more often.  I am wondering what is the standard practice out there?
Thanks.
Cliff
0
Comment
Question by:kiwi_canuck
  • 2
4 Comments
 
LVL 12

Accepted Solution

by:
TapeDude earned 420 total points
ID: 24761958
There IS hardware verification, and it does a good job with errors arising from bad media, but it can't pick up any tracking errors because the read and write heads are on the same plane.

If you're serious about your backups you'll always run a verification pass. It's a PITA for all the reasons you mention but it's worth it.
0
 

Author Comment

by:kiwi_canuck
ID: 24768462
Thanks TapeDude...judging from your name you would know!  Anyone else want to share an opinion before I close this off?
0
 
LVL 21

Assisted Solution

by:SelfGovern
SelfGovern earned 80 total points
ID: 24773958
I agree with TapeDude.
0
 

Author Closing Comment

by:kiwi_canuck
ID: 31599111
Thanks guys.
Cliff
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Windows Server 2003 introduced persistent Volume Shadow Copies and made 2003 a must-do upgrade.  Since then, it's been a must-implement feature for all servers doing any kind of file sharing.
How much do you know about the future of data centers? If you're like 50% of organizations, then it's probably not enough. Read on to get up to speed on this emerging field.
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…
This tutorial will walk an individual through the process of configuring basic necessities in order to use the 2010 version of Data Protection Manager. These include storage, agents, and protection jobs. Launch Data Protection Manager from the deskt…
Suggested Courses

824 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question