SSD sata-sas models for RAID

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fabienfs

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Jun 6, 2021
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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
 
Last edited:
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).
 
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leesteken said:
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).
Click to expand...
This is for a ZFS RAID (no hardware) on which VMs with web servers, databases, etc. will run, so a lot of movement
 
fabienfs said:
This is for a ZFS RAID (no hardware) on which VMs with web servers, databases, etc. will run, so a lot of movement
Click to expand...
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.
 
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leesteken said:
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.
Click to expand...
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?
 
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