is a large ZFS L2ARC relevant when using NFS cache
devices? | ||||||
| posted by Greg Whynott on March 20, 2014, noon (2 days ago) | ||||||
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| Thread Tags: discuss-at-studiosysadmins | ||||||
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Hello, From the perspective of moving data to the clients from the storage solution, all read, all NFS v3, all request hit the Avere units. A
ZFS file server has 2TB of l2arc cache using SL SSD devices and 300
gigs of DRAM cache, between the file server and HPC there is a cluster
of Avere units with 20TB cache.Would you think 2TB of SSD cache devices in the ZFS server is adding an appreciable amount of performance to the over all storage solution? We have an opportunity to install the 2TB
cache drives in the ZFS solution coming up soon but would rather use
them else where if they are not going to bring a lot of win to the table
(they cost about $3k each and we would need 5 for each server). We
can't 'try' them without causing a bunch of production drama so that
isn't an option, change control does not allow us to install them into a live system. greg |