Michael Schefczyk
Dabbler
- Joined
- Jan 8, 2017
- Messages
- 27
Dear All,
The hardware recommendations contain the quite open statement "modern TrueNAS versions perform increased drive writes to the boot pool. For this reason, all prebuilt TrueNAS Systems ship with either M.2 drives or SATA DOMs."
I wonder what this means. Please imagine a hyperscaled system with one all flash pool for KVM virtualization and kubernetes, one spinning disk pool for classical NAS and two mirrored boot devices. The questions are:
1) Are quality SATA DOMs still good enough in terms of (a) durability and (b) not slowing down when used instead of M.2 drives? For example, one may use two 32 GB Supermicro SATA DOM SSD-DM032-SMCMVN1 https://www.supermicro.com/products/nfo/SATADOM.cfm with 50 MB/s write speed and 1 DWPD endurance.
2) Alternatively, one could use two 256 GB SAMSUNG 870 EVO https://www.samsung.com/de/memory-storage/sata-ssd/870-evo-250gb-sata-3-2-5-ssd-mz-77e250b-eu/ with 530 MB/s write speed 150 TBW. The endurance is obviously better, but would one also notice the increased (write) speed in terms of virtualization and kubernetes performance.
3) Alternatively, one could use two M.2 drives like GigaByte Aorus NVMe 500 GB with 2.500 MB/s write seed and 850 TBW. They would consume two M.2-slots which are not available in sufficient quantities in most situations. Obviously, their endurance is much better, but would one also notice the increased speed at all (I do not care about the boot time, but about the virtualization, kuernetes and NAS performance)?
Regards,
Michael Schefczyk
The hardware recommendations contain the quite open statement "modern TrueNAS versions perform increased drive writes to the boot pool. For this reason, all prebuilt TrueNAS Systems ship with either M.2 drives or SATA DOMs."
I wonder what this means. Please imagine a hyperscaled system with one all flash pool for KVM virtualization and kubernetes, one spinning disk pool for classical NAS and two mirrored boot devices. The questions are:
1) Are quality SATA DOMs still good enough in terms of (a) durability and (b) not slowing down when used instead of M.2 drives? For example, one may use two 32 GB Supermicro SATA DOM SSD-DM032-SMCMVN1 https://www.supermicro.com/products/nfo/SATADOM.cfm with 50 MB/s write speed and 1 DWPD endurance.
2) Alternatively, one could use two 256 GB SAMSUNG 870 EVO https://www.samsung.com/de/memory-storage/sata-ssd/870-evo-250gb-sata-3-2-5-ssd-mz-77e250b-eu/ with 530 MB/s write speed 150 TBW. The endurance is obviously better, but would one also notice the increased (write) speed in terms of virtualization and kubernetes performance.
3) Alternatively, one could use two M.2 drives like GigaByte Aorus NVMe 500 GB with 2.500 MB/s write seed and 850 TBW. They would consume two M.2-slots which are not available in sufficient quantities in most situations. Obviously, their endurance is much better, but would one also notice the increased speed at all (I do not care about the boot time, but about the virtualization, kuernetes and NAS performance)?
Regards,
Michael Schefczyk