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Redundant network storage
I'm looking for a way to achieve the following list of features. I think I've taken a "wrong turn", so I'm backing up and reconsidering my opions. Thoughts and recommendations would be very appreciated. Loosely speaking, I'm looking for to provide storage service over a network to a collection of machines over which I've little control. These machines will be primarily Solaris and Linux, and "near POSIX" ACL support is necessary. There should be no single point of failure. The various machines receiving storage service are mutually untrusting. That is, they're in separate security domains. Up until now, the path I've been taking is a clustered NAS device. Each of the NAS boxes has its own storage, and a separate interconnect keeps the storage on each of these boxes in sync. The storage involved is *not* using a real clustered file system, so only one of the devices can be providing access to a given filesystem at any given moment. But the idea is that the "virtual server" for a given filesystem floats between cluster mebmers. The product we've been investigating has been giving us some trouble, however, and - once ACL support gets added to the mix - there appear few alternatives that fit this exact model. [FWIW, neither NetApp nor EMC support ACLs even in their NFSv4 implementations.] As I said, I'm now backing up and reconsidering. One approach I'm considering is a small cluster of NFS servers sharing a SAN with a clustered file system. The CFS would permit each of the servers concurrent access to the file systems, but failover/load balancing is still something of an issue. My storage needs aren't that great; one to four Tbytes would be fine for a while. So a lot of SAN solutions are gross overkill for us. Any thoughts or product recommendations? Frankly, at this point I feel like I'm missing something obvious (there's a forest hiding somewhere behind these damned trees {8^). Thanks... Andrew |
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