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March 29th, 2017 19:00
Data Domain Replication
Hi folks. I'm in the process of researching a move to an EMC Unity SAN with a Data Domain for backup and archive since I am desperately trying to rid myself of tape. The problem I'm having is offsite backup.
I do not have a colocation space to replicate to a second data domain and I'm trying to figure out how I can get the backup sets offsite. Is there any capability to replicate the data to Azure or Amazon? I've investigated hosted data domains through Iron Mountain, for example, but the setup costs are just not going to fly.
Anyone suggest any courses of action, different options for replication? Ideally I would want to replicate to some type of public cloud resource, but it doesn't look like I have too many options.
Thanks!
James_Ford
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March 31st, 2017 06:00
Hi jshweg,
As of DDOS 6.0 there is a new feature known as long term retention (LTR). This allows you to add a tier of cloud (object) storage to a DDR then migrate a subset of data from locally attached disks (the active tier) to the cloud. LTR supports various cloud providers such as AWS/Azure/Virtustream/ECS so you can use private or public clouds.
A couple of things to note:
- All backups must first hit the active tier and age at least 14 days before they can be migrated to the cloud
- You cannot read backups directly from the cloud - corresponding files have to be 'recalled' to the active tier before they can be read
If you take a look at the DDOS 6.0 administration guide this will contain more details around LTR.
The only issue, however, is that by default you would still have only one copy of your data and be reliant on a single DDR (whether the data was on local or cloud storage). If you were creative with fastcopies e.t.c. you could create two copies of data - one on locally attached storage and another on the cloud however the issue with a single DDR (hence single point of failure) remains. To be honest if you need completely separate copies theres not much you can do apart from have two DDRs and replicate data between them.
Thanks, James