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I've always been wondering if file system RAM caches couldn't be moved to a fast SSD nowadays. Do you think this would be possible with, say, an Intel 750?
by hengheng 11y ago
I've always been wondering if file system RAM caches couldn't be moved to a fast SSD nowadays. Do you think this would be possible with, say, an Intel 750?
- woodman 11y agoI'm pretty sure that is already a thing. Are you talking about something like L2ARC or swap disks?
- masklinn 11y agoZFS (and probably others) let you do that, kinda: it always has a primary in-memory cache but you can add level 2 cache devices (L2ARC) to the pool. In fact you can extend two different caches to storage devices: L2ARC is a read cache, and you can add a separate set of Log Devices used by the ZFS Intent Log, where writes are cached.