SwisherSweet
Contributor
- Joined
- May 13, 2017
- Messages
- 139
Hi,
Besides storing archived data, my FreeNAS server is primarily used for iSCSI.
I have read though dozens of posts that a SLOG may impove write performance of my iSCSI zvols.
1. How do I go about setting sync=always for my zvols? Can this be done after they are created? Is this a zvol specific setting or an overall server setting?
2. I would like to use a 240gb Kingston Hyper-X Predator PCIe flash card for my SLOG. I know it's more space than I need but it's a spare I already own and writes at 1,000MB/s. Will this card work as a SLOG? Do I need to "under-provision" it and what does that mean/how does that work? :)
3. Based on my reading, adding a zil (slog) is just extending the pool and selecting zil via the UI. Is this correct?
Thank you.
Besides storing archived data, my FreeNAS server is primarily used for iSCSI.
I have read though dozens of posts that a SLOG may impove write performance of my iSCSI zvols.
1. How do I go about setting sync=always for my zvols? Can this be done after they are created? Is this a zvol specific setting or an overall server setting?
2. I would like to use a 240gb Kingston Hyper-X Predator PCIe flash card for my SLOG. I know it's more space than I need but it's a spare I already own and writes at 1,000MB/s. Will this card work as a SLOG? Do I need to "under-provision" it and what does that mean/how does that work? :)
3. Based on my reading, adding a zil (slog) is just extending the pool and selecting zil via the UI. Is this correct?
Thank you.