Vidis
Dabbler
- Joined
- Jan 25, 2017
- Messages
- 21
Hi again!
I’m back on the track of implementing FreeNAS as my primary storage for my lab environment.
The previous thread where we discussed my setup and the possible solutions that I wanted to implement is at this location: https://forums.freenas.org/index.ph...c-h710p-mini-raid-settings.49931/#post-344102
For my FreeNAS server I will have a Dell PowerEdge R720 with a backplane that supports 16 x 2.5” disks.
The main workload that will be running against this NAS is my two ESXi servers. Hence the plan is to use either NFS or iSCSI to connect to the datastores.
I have bought a new “LSI SAS 9207-8i SATA/SAS 6Gb/s PCI-E Host Bus Adapter” that I will connect to the backplane.
The plan is to run with 14 x 600 GB SAS 10000 RPM drives that I will configure as mirrored vdev’s.
Since most the writes will need to be sync=always I will need to have a SLOG to offload the datastore.
This is my lab environment so I don’t want spend too much money right from the start. Hence, I would like to try out the following configuration.
Since my server already have a battery powered PERC H710 RAID (512 GB Cache) controller in it. I would like to use 2x146 GB SAS 15000 RPM in a RAID 1 as the SLOG device.
I know that this is not a popular thing to do but I would at least want to try this out and see if this gives me a performance boost or not.
Worst case is that it doesn’t give me a performance boost and I will later need to buy a proper SSD to use as the SLOG device.
But I wanted to check in with you guys if you think I should even try this out or just skip the SLOG device and have the ZIL on the default location on the datastore?
I’m back on the track of implementing FreeNAS as my primary storage for my lab environment.
The previous thread where we discussed my setup and the possible solutions that I wanted to implement is at this location: https://forums.freenas.org/index.ph...c-h710p-mini-raid-settings.49931/#post-344102
For my FreeNAS server I will have a Dell PowerEdge R720 with a backplane that supports 16 x 2.5” disks.
The main workload that will be running against this NAS is my two ESXi servers. Hence the plan is to use either NFS or iSCSI to connect to the datastores.
I have bought a new “LSI SAS 9207-8i SATA/SAS 6Gb/s PCI-E Host Bus Adapter” that I will connect to the backplane.
The plan is to run with 14 x 600 GB SAS 10000 RPM drives that I will configure as mirrored vdev’s.
Since most the writes will need to be sync=always I will need to have a SLOG to offload the datastore.
This is my lab environment so I don’t want spend too much money right from the start. Hence, I would like to try out the following configuration.
Since my server already have a battery powered PERC H710 RAID (512 GB Cache) controller in it. I would like to use 2x146 GB SAS 15000 RPM in a RAID 1 as the SLOG device.
I know that this is not a popular thing to do but I would at least want to try this out and see if this gives me a performance boost or not.
Worst case is that it doesn’t give me a performance boost and I will later need to buy a proper SSD to use as the SLOG device.
But I wanted to check in with you guys if you think I should even try this out or just skip the SLOG device and have the ZIL on the default location on the datastore?