> On Jul 22, 2018, at 11:06 AM, Carlo Pisani via cctalk <[email protected]> 
> wrote:
> 
> thus DDS4, LTO2, DLT: which is the best tape?

I wouldn’t touch 4mm DAT tapes with a ten foot pole, if I can help it.  I’ve 
used them in the past, but only in special cases, OR more importantly when 
forced to.

You can’t buy new LTO2 or DLT drives (I think the last DLT drives were 
DLT8000’s).  Even Super-DLT tapes are obsolete.  

At this point, for tape, I recommend LTO8, and if this is for Archival 
purposes, you’ll need to refresh to LTO9 when released.  LTO8 introduces an 
evil little gotcha.  While previous versions of the drives, have been able to 
read two versions back, LTO8 can’t.

I’ve failed to see any reason behind your questions.  If you’re looking for a 
long-term archival solution, look to cloud storage (either on-prem, or 
off-prem).  Sure tape is cheap, but when you start looking at other costs, such 
as storage and handling, it becomes expensive.

This touches on one of my personal projects this year.  I virtualized my backup 
infrastructure for my OpenVMS systems, and then I went a step further, and have 
virtualized most of my OpenVMS environment.  I still need to virtualize my 
DECnet area router.  While all the data is moved, I’m still working to move 
some apps.  It makes protecting my data easy.  My primary interest is the OS 
and software, while in the past I’ve been focused on running on real hardware, 
virtualization is looking real nice, even for working systems where I have 
plenty of spares.

Zane


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