- Community Home
- >
- Storage
- >
- Data Protection and Retention
- >
- StoreEver Tape Storage
- >
- DLT VS80 gives write protect on old tapes
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Forums
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 03:16 AM
тАО09-11-2002 03:16 AM
There is no problem reading those old tapes.
I'm working on a NT4.0 SP5 server.
I use ArcServeIT WE v6.61 build 834 (newest).
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 03:39 AM
тАО09-11-2002 03:39 AM
Re: DLT VS80 gives write protect on old tapes
VS80 drives use the DLT1 technology, which are backward-compatible ONLY to the DLT4000 standard DLT drives. You previous drive is one of these, so that is why you can read these tapes successfully.
However, VS80 drives cannot write using the DLT4000 standard, so that is why you are getting a write-protected LED.
Are you using DLTtapeIV as your cartridges? These should be black. If you are using other tape cartidges (white or gray), these will not be written by a VS80. You need black cartidges (40/80Gb) for VS80.
HTH,
Vince
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 04:03 AM
тАО09-11-2002 04:03 AM
Re: DLT VS80 gives write protect on old tapes
Yes, I'm using the 40/80 GB black tapes.
Kind regards
Raoul
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 04:21 AM
тАО09-11-2002 04:21 AM
Re: DLT VS80 gives write protect on old tapes
You need to reformat your cartridges, otherwise you won't be able to write anything on them.
Track density and bit density are different for the different technologies, even tape speed; it changes. I do not know how to do this on ArcServeIT, though. But that is what you need to do, definately, since you cannot write using DLT4000 technology using a VS80. You don't want to do that of course, seeing that you bought the VS80 to be able to store 80Gb compressed data instead of 40Gb...
HTH,
Vince
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 07:23 AM
тАО09-11-2002 07:23 AM
SolutionIt more than just a "reformat". The drive cannot reformat the tapes. They need to be degaussed with a VERY STRONG deguasser - something a lot stronger than what you would buy at radio shack. The one I've seen weighs about 100 lbs. There might be services available that can do this for you.
Thus, it's best to keep DLT-written media in DLT drives, and DLT1/VS80 written media in those drives.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 10:57 AM
тАО09-11-2002 10:57 AM
Re: DLT VS80 gives write protect on old tapes
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 11:58 AM
тАО09-11-2002 11:58 AM
Re: DLT VS80 gives write protect on old tapes
Yes, sounds like the same problem. You can read a DLT40 (aka DLT4000) tape in a VS80, but you cannot write (i.e. append) to it, nor can you reformat it.
You would need to have them degaussed as mentioned above.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-11-2002 02:09 PM
тАО09-11-2002 02:09 PM
Re: DLT VS80 gives write protect on old tapes
I think there's some misconception on reusing DLT-written media.
Here's the best answer I've seen:
Question: Why will DLT1 not overwrite DLT 4000 format media unless I degauss* the media?
*= degaussing is a process of "randomizing" the magnetic particles (or dipoles) that are embedded in the media formulation - effectively restoring the media to a "virgin" state. Degaussing is also sometimes called bulk erasing.
Answer: DLT 4000 format written by DLT 4000/7000/8000 drives "saturates" the media magnetically more than the thin film/MR head used in DLT1. It is possible that in the course of overwriting, some of the residual DLT 4000 format will interfere with the new DLT1 format, causing higher error rates or inability to read the new DLT1 format.
Erasing a tape is not the same as degaussing as the format itself will still be resident on the tape.
The power needed to degauss a piece of media depends on the "coercivity" of the media (DLTtape IV tape media is rated at 1850 Oersteds). The degaussing equipment needs to have a coercivity rating of three times this value to operate effectively. Many manufacturers of degaussing equipment do not specify their Oersted rating but rather the types of media they are capable of degaussing.
One source of degaussing devices or services can be found at:
http://www.audiolabelectronics.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-12-2002 12:53 PM
тАО09-12-2002 12:53 PM
Re: DLT VS80 gives write protect on old tapes
the problem is similar to the onw it happens when floppy disk of 1.44 Mbyte appear on the market,the power of the magnetic field used by the "old" 720 Kbyte disk drives was higher and the head was larger, so the tracks recorded where larger, with new tecnology, we could read, but never clear these large tracks.
Here the process is similar, with lower and concentrated "magnetic power" it si not possible to remove previous largers tracks.
Bye
Marino