ADSM-L

Re: 8mm vs 3590 tape

1995-07-24 19:21:17
Subject: Re: 8mm vs 3590 tape
From: David Boyes <dboyes AT WOOD.HELIOS.ND DOT EDU>
Date: Mon, 24 Jul 1995 18:21:17 -0500
This may be pertinent to the disaster recovery discussion. note
that the 3590s are not platform specific.

> Reliability
> * 8mm - quoted at 500 passes but actual reliability is more on the
>   average of 5-10 passes before failure.
> * 3490/3590 tape - quoted at 5,000 full passes, 80,000 short passes..
>   but actual customer experience is more like 100,000 passes.
>
> Performance
> * 8mm - 300-500 KB/sec
> * 3590 - 9MB/sec
> In addition, 3590 has quick search capabilities which leave 8mm in
> the dust.
>
> Capacity
> * 8mm - 5GB
> * 3590 - 10GB uncompressed (20-30GB compressed)
>
> Price - I'm not a marketing guy but one customer told me he
> pays twice for 8mm cartridges what he does for 3490 cartridges.
> I don't know the exact cost of the 3590 cartridges but I believe they
> are on the same order as 8mm cartridge costs.
>
> What 8mm does have going for it are that the 8mm drives and
> libraries have a lower entry cost and are more prevalent.
>
> Greg Tevis
>
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