[TriLUG] High performance NFS server - which OS and RAID is best?

Mon Aug 20 15:29:50 EDT 2018

Based on last meeting's presentation, zfs on linux is mature

On Mon, Aug 20, 2018 at 3:08 PM, Ron Kelley via TriLUG
<trilug at trilug.org> wrote:
> I am building a new high-performance NFS server for virtualization storage and am looking at the best combination of RAID and OS.  Hoping someone from the TriLUG alias has some opinions.
>
>
> Components and Requirements:
> ----------------------------
>   * 8-10TB of usable capacity using Samsung 2TB 860 SSDs
>   * XFS or EXT4 support (no need for snapshots or compression)
>   * 1RU server with Intel 2600-v2 CPU, 10x 2.5” HDD bays, 16G RAM
>   * 1x dual-port 10G Intel DA-520 NIC configured for LACP to separate Cisco switches (running “vpc”)
>   * Support 8-12 virtualization servers via NFS for shared storage.  Probably running 200 VMs at any given time.
>   * 80/20 read/write performance
>   * Ability to replace failed drives without server outage
>
>
> I was thinking of using FreeBSD 11, CentOS 7, Debian 9.5, or a turn-key appliance tool like FreeNAS.  On the CentOS side, it seems RedHat recommends against using RAID-5 with SSDs due to performance issues (lack of trim): https://unix.stackexchange.com/questions/451908/centos-7-raid-1-and-degraded-performance-with-ssds
>
> While RAID-10 (striped mirror) is a good choice, it will use twice as many SSDs as RAID-5.  Cost is a factor.
>
> I am curious what the group thinks which OS and RAID technology would be best in this case.  Does Debian have a faster NFS server than CentOS (or FreeBSD for that matter)?  I don’t want to purchase a “vendor” box because I already have the server parts in hand.
>
>
> Thanks.
>
>
> -Ron
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