Hello!
We are looking to build our first shared network storage (or SAN) for a couple of C6100 machines. We will be using OmniOs + napp-it as a first attempt. Later we plan to add a hot-spare server with ZFS replication. This has grown into a larger hobby project so as always money is an issue
After reading a lot of benchmarks (i.e. https://calomel.org/zfs_raid_speed_capacity.html), guides etc I am still unsure how to best build what we want.
The alternatives are all SSD pools or HDD pool + ZIL and L2ARC. We want to do at least raid-z2 and have good performance to our VMs. The SAN is connected through a 10 Gbe connection. The VMs are windows and linux mixed. They will be running primarily game servers (some might be quite IO intensive).
Of course a full SSD pool with i.e. 4 or 6 Samsung 512 GB PRO SSD drives would be the best. But that won't give us that much space for VM storage. With SSD pools we might have to use dedup, with ordinary HDD storage we can avoid that.
In more details we plan the HDD setup like,
6x WD RED 3TB in RAID-z2 (might add 1 hot spare to)
2x Samsung 256 GB Pro SSD for L2ARC (possibly mirrored, we already have 2 of these)
2x Crucial M500 SSD drive for Zil (mirrored, has capacitor)
What do you guys think, can the HDD alternative really provide performance to say +20 VMs? Can it even compare to the SSD alternative?
We are looking to build our first shared network storage (or SAN) for a couple of C6100 machines. We will be using OmniOs + napp-it as a first attempt. Later we plan to add a hot-spare server with ZFS replication. This has grown into a larger hobby project so as always money is an issue
After reading a lot of benchmarks (i.e. https://calomel.org/zfs_raid_speed_capacity.html), guides etc I am still unsure how to best build what we want.
The alternatives are all SSD pools or HDD pool + ZIL and L2ARC. We want to do at least raid-z2 and have good performance to our VMs. The SAN is connected through a 10 Gbe connection. The VMs are windows and linux mixed. They will be running primarily game servers (some might be quite IO intensive).
Of course a full SSD pool with i.e. 4 or 6 Samsung 512 GB PRO SSD drives would be the best. But that won't give us that much space for VM storage. With SSD pools we might have to use dedup, with ordinary HDD storage we can avoid that.
In more details we plan the HDD setup like,
6x WD RED 3TB in RAID-z2 (might add 1 hot spare to)
2x Samsung 256 GB Pro SSD for L2ARC (possibly mirrored, we already have 2 of these)
2x Crucial M500 SSD drive for Zil (mirrored, has capacitor)
What do you guys think, can the HDD alternative really provide performance to say +20 VMs? Can it even compare to the SSD alternative?