> Edit: What's the RAM overhead of this? Is it ~64B per 128kB deduped block or what's the magnitude of things?
No real memory impact. There's a regions table that uses 128k of memory per terabyte of total storage (and may be a bit more in the future). So for your 10 petabyte pool using deduping, you'd better have an extra gigabyte of RAM.
But erasing files can potentially be twice as expensive in IOPS, even if not deduped. They try to prevent this.
No real memory impact. There's a regions table that uses 128k of memory per terabyte of total storage (and may be a bit more in the future). So for your 10 petabyte pool using deduping, you'd better have an extra gigabyte of RAM.
But erasing files can potentially be twice as expensive in IOPS, even if not deduped. They try to prevent this.