> >>> It's one reason to try to keep all your tapes virtual.

> 

> >> It's a small trade off for simplifying the

> >> management of the environment (which is very large) and guaranteeing

> >> to the business that we will have all the tape data in a disaster.

> 

> >Well, it's safe, convenient, error-proof, but EXPENSIVE.

> 

> It doesn't have to be expensive. Seen this?

> http://www.luminex.com/products/channel_gateway/firex4500.htm

> Or this?

> http://www.bustech.com/products/mainframe-data-library.asp

> 

> Both will mirror the data on the back end for BCP purposes. Why even keep

> the RTDs? This stuff is inexpensive enough to keep all the tape data on

> spinning disk and fully mirrored. We're seriously thinking about it.

> Probably works for us better than most, however, since we made a concerted

> effort over the last decade to keep people from using tape. So its mainly

> just HSM and DB images at this point and its under 25TB of data.



This customer has around 5 Petabytes of tape data. That's a lot of DASD - even 
with todays price per gigabyte.

Some data typically needs to be kept for 10 years (or longer). I think tapes 
will still be around for a while yet.

John 

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