Re: [Networker] new to Virtual Tape Library - what are the benefits?
2007-08-15 10:13:02
What counts is only the usable disk space (usable, not the raw disk
capacity) in the VTL disk cache. Lucky you, if you can fill this
efficiently with de-duplication. The same thing applies to FTD or AFTD.
BTW, one of the other benefits of using VTL from the licensing point of
view is, you can define a large number of devices which you dedicate to
the storagenodes, so eliminating the need of using expensive DDS (drive
sharing) license options.
regards -attila
Teresa Biehler schrieb:
So, how does de-duplification fit into this? Is the capacity based on
how much is backed up (when calculated at the client)? Or is it by how
much space it takes up? Actually, I’m wondering that same thing for AFTDs.
Thanks.
Teresa
------------------------------------------------------------------------
*From:* Attila.Mester AT Sun DOT COM [mailto:Attila.Mester AT Sun DOT COM]
*Sent:* Wednesday, August 15, 2007 9:49 AM
*To:* EMC NetWorker discussion; Teresa Biehler
*Subject:* Re: [Networker] new to Virtual Tape Library - what are the
benefits?
The 7.4 release has a real VTL license, based on capacity, 10TB base,
10TB and 25TB additions. There is also a special storagenode license
available for Clariion Disk Library. Prior to 7.4, customers got 3 x
Unlimited Autochanger Licenses when licensing VTLs, even after
introduction of the mentioned capacity based model.
regards -attila
Teresa Biehler schrieb:
Can you give some details about how licensing changes for VTLs in 7.4?
Thanks.
Teresa
-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of Siobhán Ellis
Sent: Tuesday, August 14, 2007 6:57 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU <mailto:NETWORKER AT LISTSERV.TEMPLE DOT
EDU>
Subject: Re: [Networker] new to Virtual Tape Library - what are the benefits?
Essentially you can get disk to disk backup speeds, and can do dynamic drive
sharing. Of course, you do loose the ability to read and write at the same
time, that you get from an advanced file type device.
With the latest versions of NW you can use the processors inside the EDL
(new name for the CDL) as a storage node to do the cloning/migration to tape
for you.
7.4 has new licensing for VTL's - watch out for that.
Siobhan
On 14/8/07 8:02 PM, "mark wragge" <mark_t_wragge AT YAHOO DOT IE> <mailto:mark_t_wragge AT YAHOO DOT IE> wrote:
Hi, I am new to the use of VTL (clariion disk) and I would like to know what
the benefits of using the VTL are over using Advanced Disk Device.
Also, is there such thing as staging on a VTL? If not then what is the best
way to free up disk space when it is full - is it cloning to tape and then
re-labeling the virtual media.
Any examples of how you are using VTL and managing the media would be
appreciated.
Regards, Mark
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--
********************************************************************
Attila Mester 5 Digit Sun internal: x62534
Data Protection Architect Tel: (+49 89) 46 008 2534
Sun Microsystems GmbH Fax: (+49 89) 46 008 2583
Sonnenallee 1 Mobil: +49 172 812 5947
85551 Heimstetten / Germany mail: attila.mester AT sun DOT com
<mailto:attila.mester AT sun DOT com>
********************************************************************
--
********************************************************************
Attila Mester 5 Digit Sun internal: x62534
Data Protection Architect Tel: (+49 89) 46 008 2534
Sun Microsystems GmbH Fax: (+49 89) 46 008 2583
Sonnenallee 1 Mobil: +49 172 812 5947
85551 Heimstetten / Germany mail: attila.mester AT sun DOT com
********************************************************************
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