What product supports a disk-based cache for 250 GB of data?

What product supports a disk-based cache for 250 GB of data?

I have to build a cache for a web frontend-service. The cache should be
used as a side-cache for round about 250 GB of data. Unfortunately, the
cache can not be hold in-memory.
I have done a lot of researching, but until now I have not found a
suitable solution.
So, these are the restrictions/requirements:
about 240 GB need to be cached
the amount of data has already been reduced
the caching solution has to provide a failover scenario: once the
caching-server/ a node breaks down, a second one has to take over
instantly with the same caching state
the software should have been used in an enterprise before
the cache must be "maintainable" (e.g. delete cache keys, clear cache)
Does anyone have an idea for that? Any input/idea is highly appreciated.
Many thanks in advance,
Timo