On Fri, Dec 14, 2018 at 10:20 AM Richard Elling < richard.ell...@richardelling.com> wrote:
> > I can't speak to the Supermicro, but I can talk in detail about > https://www.vikingenterprisesolutions.com/products-2/nds-2244/ > > > > > While I do not run HA because of too many issues, I still build > everything with two server nodes. This makes updates and reboots possible > by moving a pool to the sister host and greatly minimizing downtime. This > is essential when the NFS target is hosting 300+ vSphere VMs. > > The NDS-2244 is a 24-slot u.2 NVMe chassis with programmable PCIe switches. > To the host, the devices look like locally attached NVMe and there is no > software > changes required. Multiple hosts can connect, up to the PCIe port limits. > If you use > dual-port NVMe drives, then you can share the drives between any two hosts > concurrently. > Programming the switches is accomplished out-of-band by an HTTTP-based > interface > that also monitors the enclosure. > > In other words, if you want a NVMe equivalent to a dual-hosted SAS JBOD, > the NDS-2244 > is very capable, but more configurable. > -- richard > > This is execellent. I like the idea of only one host seeing the SSDs at once, but a programatic way to flip them to the other host. This solves the fencing problem in ZFS nicely. Thanks for product reference. The Viking JBOF looks like what I need. -Chip
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