SSD sata-sas models for RAID

[fabienfs]

Hello,

I would like to do a RAID5 with 4 2TB SSDs in SATA or SAS.

Do you have any “enterprise”/”server” models to recommend?

I saw the Samsung PM883 model but I don't know if it is the best choice and if it is still relevant

Thanks

 

[Skankhunt42]

Kingston DC600 M/R depending on your workloads and requirements should be a solid choice.

 

[leesteken]

It depends on whether it's hardware RAID5 or ZFS RAIDz1. It also depends on whether you are using it to store ISO and/or backups or want to run VMs on it (with databases for example).

 

[fabienfs]

It depends on whether it's hardware RAID5 or ZFS RAIDz1. It also depends on whether you are using it to store ISO and/or backups or want to run VMs on it (with databases for example).

This is for a ZFS RAID (no hardware) on which VMs with web servers, databases, etc. will run, so a lot of movement

 

[leesteken]

This is for a ZFS RAID (no hardware) on which VMs with web servers, databases, etc. will run, so a lot of movement

I think RAIDz1 is a very bad choice as (write) performance will be (very) slow and you'll lose a lot of space with 4 drives. A stripe of mirrors would be much better for IOPS for VMs and databases. Make sure to get enterprise SSDs with PLP.

 

[fabienfs]

I think RAIDz1 is a very bad choice as (write) performance will be (very) slow and you'll lose a lot of space with 4 drives. A stripe of mirrors would be much better for IOPS for VMs and databases. Make sure to get enterprise SSDs with PLP.

I notice that my server accepts SATA or SAS disks. So I guess it is better to favor the SAS? So you recommend mirroring 2 SSDs rather than doing a RAID with several SSDs?

 

[Kingneutron]

SAS is full-duplex, SATA is half-duplex and is a subset of SAS. You decide based on price/budget, warranty, and expected workload