We are using the dd565 here at our site, but the compression is only 
around 12 right now, so was wondering what is your filesystem settings ? 

Global Compression Type 9
Local Compression Type lz 
Marker type none 



We are seeing the same performance as with our old lto-2 tapes, but since 
it runs over the same gigabit nic I wouldnt imagine that is would increase 
or decrease much. 
Cloning performance is also approx the same as when we were using tape. 
The box itself is stable enough, with and uptime of 36 days. 
we are not using the VTL only as adv file devices.
We plan to expand the use of the dd565 with an extra disk shelf, and use 
it for mksysb backups also.


**************************************************
Med venlig hilsen / Regards
Kenneth Larsen
Steria
Tonsbakken 16-18
2740 Skovlunde
kel AT steria DOT dk - 44506261 - 26306261
**************************************************
With a revenue of ?1.8 billion and more than 18,000 employees, Steria is 
one of the top ten IT services companies in Europe. Steria Denmark's 
ambition is to reach a yearly growth of 20% in the coming 3 years. We are 
assisting our customers with: Consulting, Business Solutions, Project 
Management, Lean, SOA, Portals, Application Development, Open Source, 
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Hosting, Infrastructure, Security etc. 



Allan Nelson <an AT CEH.AC DOT UK> 
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
08-02-2008 17:27
Please respond to
EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>; Please respond 
to
Allan Nelson <an AT CEH.AC DOT UK>


To
NETWORKER AT LISTSERV.TEMPLE DOT EDU
cc

Subject
Re: [Networker] Anyone is using datadomain devices? Could you share your 
experience please






Hi
Yes, we're using a DD580 (currently on trial).  Have been using it for 
about 3 months now and it's been absolutely brilliant.  Rock solid.

We're not using VTL's but as an ADV File type device then cloning to tape 
as required for odff-site storage. 
Compression is very good and we have a whole mix of data. 
I'm told it's especially good re compression with Oracle Databases, but 
that's the one thing we haven't been using it with.

Even on nightly incrementals, we're seeing 25+ times compression.

Hope we get to keep it ;-))

Cheers... Allan

>>> anepomn AT GMAIL DOT COM 08/02/08 14:46:12 >>>
Dear All,

My sales guy recommended to look at DataDomain device (disk based
appliance) as a possible replacement for the tape library.

Anyone is using datadomain devices? Could you share your experience 
please.

Thank you,
Aleksandr

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