Date: Mon, 6 Nov 2017 19:35:27 +0000 From: krad <kraduk@gmail.com> To: Warren Block <wblock@wonkity.com> Cc: Kate Dawson <k4t@3msg.es>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: FreeBSD ZFS file server with SSD HDD Message-ID: <CALfReydPECOhgTiSwuaXrOu74=XMRxW1jurPQ6qNy1M98d6f0w@mail.gmail.com> In-Reply-To: <alpine.BSF.2.21.1711010918350.68353@wonkity.com> References: <20171011130512.GE24374@apple.rat.burntout.org> <alpine.BSF.2.21.1711010918350.68353@wonkity.com>
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you might also find the throughput on that many drives in that configuration is higher than the single ssd On 1 November 2017 at 15:23, Warren Block <wblock@wonkity.com> wrote: > On Wed, 11 Oct 2017, Kate Dawson wrote: > > Hi, >> >> Currently running a FreeBSD NFS server with a zpool comprising >> >> 12 x 1TB hard disk drives are arranged as pairs of mirrors in a strip set >> ( RAID 10 ) >> >> An additional 2x 960GB SSD added. These two SSD are partitioned with a >> small partition begin used for a ZIL log, and larger partion arranged for >> L2ARC cache. >> > > For FreeNAS, we recommend against using sharing an SSD like this. In > fact, we recommend against using one SSD for anything more than a single > SLOG for a single pool. To be effective, this needs to be a low-latency > SSD, and I/O contention with other shared partitions on the same device can > negate the performance benefit. > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe > @freebsd.org" >
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