Storage Grid - One Large Shared ASM Pool

Gurus,
We're looking into options/methods to take advantage of the "storage grid". We want to create a large diskgroup for data and fra and have these accessible to all our lower region servers (dev, qa, ...). These servers are all non-rac and non-clustered.
Is this concept possible without installing Oracle Clusterware?
If clusterware is required, it requires an additional NIC for the private network, since this is a non-production environment we are discussing the possibility to assign both public and private IPs to the same nic (save some hardware $$). Since we'd never failover b/c we are not running RAC, do you see any issues running this way? Or is there another way to share storage between many nodes?
TIA

I believe you are going to have to at least cluster the ASM. Each machine sharing the ASM storage will need an ASM instance that contains your large diskgroups.

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