slynux

Not a filesystem. But a simple experimental kv storage from scratch, https://github.com/t3rm1n4l/lightkv

its not about language's capability. Its about using extensions/plugins to support multiple formats and things in the templating language.

pagd has got lot of additional features and it is very much extensible. http://pythonhosted.org/pagd

No. Many smaller clusters.

Currently zBase does not have any capabilities for indexing. But, the inherent design enables to use incremental replication protocol to build things outside of zBase to do indexing.

zBase is used as highly available key-value store for writes and reads. It offers few fancy operations like get-lock as well.

If you look at the key features, following are the attractive points about zBase:

- LRU based or random eviction based cache management.

- Support for multiple disks and thereby IO parallelism.

- Incremental Backup and Restore (You can pack 5x .. 10x size of RAM in ZBase and make use of incremental backups for node failover)

- Incremental backup helps to offer Blob level restore in hourly, daily and weekly granularities)

- Cluster manager - ZBase operates by partitioning entire data into virtual buckets and servers act as containers to hold these vbuckets. Hence provides scalable ways to increase or decrease the number of servers in a cluster.

I had written a Wifi based LTSP for Linux sometime ago. http://www.sarathlakshman.com/2010/03/14/wireless-ltsp/