02-12-2011 09:25 AM
Dear All,
We are planning to implemet VLS in our current NBU 7 envoirnment. I have few querries.
1.After enabling VLS the storage will be presented as Tapes and we are taking Exchange 2010 GRT backups which is only supported on storage will GRT still happen or it cannot be.
2. We are also planning a DR site and that DR site will be functional too so we will duplicates our backups from primary to dr and dr to primary (Dual site/single domain) scenario if we go for nbu 7 puredisk option will it work with VLS or not.
Can any one also point me to a doc with disadvantages and advantages of using VLS (it will be better if it will be compared with simple storage) as far i think netbackup dedup will not work on VLS.
02-12-2011 09:03 PM
Hi Rizwan,
If you'd like to provide more detailed information we can give you more detailed advice.
02-13-2011 12:48 AM
Hi,
As stated in Netbackup for MS Exchange guide GRT require a temporary staging area for restore ... In fact you need to manually duplicate your backup image to this area prior to process the normal GRT restore operation
So it will be eaisier to deal with MSDP or PDDO for such need :) MSDP/PDDO support GRT with NBU 7.0.1 and EEB
Disk space free faster with standard disk or OpenStorage. A tape can be erased only if all image on it have expired.
Need to specify virtual tape size
VLS is easy to integrate with NBU
Same limitation with VLS as with real tape library : basicaly tape are really well emulated : only sequential access, exclusive access, need to maintain drivers ... suffering same limitations as real tape drive
VTL is not compatible with intelligent capacity management
You really should consider using OpenStorage device (such NetBackup 5000 series appliance, DataDomain, Sepaton) or in its software form (Puredisk/MSDP)
You should also read http://eval.symantec.com/mktginfo/enterprise/white_papers/b-whitepaper_nbu_disk_based_data_protectio... and ftp://exftpp.symantec.com/pub/support/products/NetBackup_Enterprise_Server/334042.pdf
please, note that SharedDisk is no longer supported begining with NBU 7.0
I hope this help
Regards
02-14-2011 05:01 AM
Hi Riaan,
thanks for the input ..it is very helpful.
What details you will require to give from me for details advise .
02-14-2011 08:34 AM
Hi Rizwan,
The specific model of VTL/Openstore Device you're planning to use. There are a lot of vendors selling devices like these, some of them can even be configured with multiple configurations i.e. OST storage as well as VTL.
They also have different levels of integration with NetBackup. Some devices, mostly the OST devices can do perform duplication to a DR site (and some of them can do this under control of NetBackup). Some VTLs can perform stacking or direct copy to tape, once again also integrating with NetBackup. To have NetBackup know about these operations is handy as it then knows that you have multiple copies of your data. In the years gone by a lot of the devices could do these operations, but NetBackup didn't know about it.
02-14-2011 08:50 AM
Hi Riaan,
You can see the specification
http://h10010.www1.hp.com/wwpc/us/en/sm/WF06a/12169-304616-1153414-1153414-1153414-3542988.html
all the hardware purchased already but we have not configured VLS yet we are using Simple SAN so far .
Regards
Rizwan
02-14-2011 08:58 PM
Hi Rizwan,
Thanks for the information.
With regards to your original questions about GRT, you cannot send GRT backups to this device. You'll have to reserve/keep your storage area currently used by GRT. You can send a 2nd copy to the VTL for long(er) term storage.
The device does support deduplication so you will save on the amount of space required to store all your backups. This is called target deduplication as it occurrs on the VLS. On a performance side, your clients will still send all (the full dataset undeduplicated) to the media server so your backup window will probably remain the same unless you do performance tuning or redesign the NetBackup environment (add more SAN clients or San Media servers)
I see the device does support replication so you should be able to replicate the vritual medias to another site. NetBackup will not be involved in this operation so you'll always have one copy of the media (according to netbackup).
You could also use Vault to duplicate between sites and VTLs. In this scenarion NetBackup would be aware of the additional copies.
I hope this answers all your questions.
02-15-2011 07:02 AM
Thanks Riaan for quick responses regarding this and now I have a much clear picture.
03-21-2011 04:38 AM
Do we require to purchase a different licencse for VTL ?? do there any other license to enable VTL on netbackup
03-21-2011 04:50 AM
"In addition, You may use NetBackup Library Based Tape Drive to support physical tape drives only. If you wish to acquire backup support for virtual tape drives or any device that simulates the behavior and functionality of a physical tape drive, You must obtain the appropriate number of NetBackup Virtual Tape Option licenses."
03-21-2011 05:56 AM
is it still the smae for NBU 7.01 ?? can you also let me know whereyou get this is it in license guide ??
03-21-2011 06:19 AM
A hard copy actually came with my NB7 media kit & I believe I found the "soft" copy somewhere on one of the DVDs (but I couldn't tell you specifically where, I will look ....)
03-21-2011 06:23 AM
can you tell me the name of the document ??
03-21-2011 06:35 AM
http://eval.symantec.com/mktginfo/enterprise/eulas/GBL%20ENT%20EULA%20NBU%207%200_Final.pdf
***EDIT***
& promptly found after that that I'd bookmarked said URL after the last time this was requested!
03-21-2011 09:48 AM
Thanks for the link :)
03-21-2011 10:58 AM
The license is called Enterprise Disk. This is needed when you are backing up to a storage device that acts more than just a JBOD. Basically any dedupe device, VTL or replication appliance requires an Enterprise Disk license.
03-21-2011 11:12 AM
Hi Rizwan,
All the comments above are correct, you need the enterprise disk feature. This feature however can be unlocked in two ways and it depends on the licensing method. If you're using the NetBackup Platform per Terabyte model you already have access to the enterprise disk feature.
If you're using the Traditional NetBackup licensing model where you would have bought Enterprise Server, Enterprise Client, SSO, Standard Clients etc, then you need to buy the Enterprise disk license separately. The License is bought per front-end terabyte, i.e the amount of data protected on the clients, or basically the sum of a full backup from all clients.