I have a 4x5TB 2.5 drives (2 Mirrors in a stripe for Raid 10), I purchased knowing the potential performance issues and plan to only really use them as cold storage. This ZFS pool is only for an off-site backup, primarily write and not reads.
Since I had a few 100G SSD SAS drives (high write endurance) lying around, I was thinking about adding one or both as ZLOG to the pool. I am also forcing log-syncs so regardless of protocol (SMB/NFS etc) they are used for writes.
I now see all writes appearing on the SSD's for this pool, and wanted a gut-check. Is this a good way to potentially offset write issues in the future on this SMR pool or is the SSD write-cache thing not even worth exploring due to the workload.
Since I had a few 100G SSD SAS drives (high write endurance) lying around, I was thinking about adding one or both as ZLOG to the pool. I am also forcing log-syncs so regardless of protocol (SMB/NFS etc) they are used for writes.
I now see all writes appearing on the SSD's for this pool, and wanted a gut-check. Is this a good way to potentially offset write issues in the future on this SMR pool or is the SSD write-cache thing not even worth exploring due to the workload.