> I'm not sure about others on the list, but I have a dislike of AC power > bricks in my racks.
I definitely empathize with your position concerning AC power bricks, but until the perfect battery is created, and we are far from it, it comes down to tradeoffs. I personally believe the ignition risk, thermal wear-out, and the inflexible proprietary nature of Li-Ion solutions simply outweigh the benefits of internal or all inclusive mounting for enterprise bound NVRAM. > Is the state of the power input exposed to software in some way? In > other terms, can I have a nagios check running on my server that > triggers an alert if the power cable accidentally gets pulled out? Absolutely, the X1 monitors the external supply and can detect not only a disconnect but any loss of power. In all cases, the card throws an interrupt so that the device driver (and ultimately user space) can be immediately notified. The X1 does not rely on external power until the host power drops below a certain threshold, so attaching/detaching the external power cable has no effect on data integrity as long as the host is powered on. > OK, which means that the UPS must be separate to the UPS powering > the server then. Correct, a dedicated (in this case redundant) UPS is expected. > Any plans on a pci-e multi-lane version then? Not at this time. In addition to the reduced power and thermal output, the PCIe x1 connector has the added benefit of not competing with other HBA's which do require a x4 or x8 PCIe connection. Very appreciative of the feedback! Christopher George Founder/CTO www.ddrdrive.com -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
