Re: Are Tapes Verified During Backup?

[CRPence <CRPbottle@xxxxxxxxx>]

Jerry Adams wrote:
> <<SNIP>>
>
> That said, I'll pass it back to my boss to ask them what they 
> mean by "verified." My expectation is that, since they are from a
> PC environment, they are used to a "Verify" option such as we use
> for our Windows server (Symantec Backup, I think). Or as is used
> when creating/verifying CD's. I.e., re-read the media and compare
> it to what's on the disk. If I get back anything different, I'll
> post it here.
>
> <<SNIP>>

  Does the noted "Verify" feature support serial media?  I would be 
surprised if it did.

  Whatever is in memory, what was previously requested to be 
written to the media, is easily compared to what can then be 
_randomly_ read back from media into other memory.  That is not so 
easily effected when only _serial_ read is available from a 
[non-virtualized] tape, and definitely would not be as timely when 
using serial access media versus random access media.

Regards, Chuck