On May 8, 2010, at 7:01 PM, Tony wrote: > Ok, this is definitely the kind of feedback I was looking for..... I'll have > to check out the docs on these technologies it looks like. Appreciate it. > > I figured I would load balance the hosts with a Cisco device, since I can get > around the IOS ok. > > I want to offer a online backup service that provides high availability.
Yep, for this sort of business, a replication scheme works well. Note that the replication is better when it is done closer to the application. For a cloud storage company, it is relatively easy to modify the app to perform the redundancy and keep the storage simple. By contrast, if you are running a legacy app that you have no control over, you are stuck with their architecture and adding redundancy lower in the software stack is a necessary evil. > Check out the following concept : > http://blog.backblaze.com/2009/09/01/petabytes-on-a-budget-how-to-build-cheap-cloud-storage/ Syncing a box of this size could take a week or two. Consider triple redundancy. > I like their basic idea, but they are in the market of $5/month unlimited. I > want to take this to the next level. While this solution provides fault > tolerance for drive failures, it does not seem to have a safeguard for if > terrorists bomb one of your servers. So I figured ZFS would take care of the > soft RAID, encryption (for compliance), dedup, and that kind of neat stuff. Yep. > I'm still not 100% on how we're going to give access to the storage. I had > thought about using RSync or DFS/RDC for Win hosts. VPN for encrypted > transfer if needed. Would avoid CIFS probably. > > I guess a couple minute delay in the replication is ok, if the backup > management software is smart enough to say.... wtf.... get over it, and > retransmit the file again without user intervention. If you put redundancy in the infeed, then you won't have a delay like this. -- richard -- ZFS storage and performance consulting at http://www.RichardElling.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
