The STEC ZeusRAM is a SAS SSD based on supercap-backed DRAM that flushes to flash upon power loss. When it first came out, it was a great choice for ZFS log devices. But by now it's old. Today we rebooted the last server at $WORK that still had any of these devices installed. Not just a soft reboot either, but a power cycle. And when the server came back up, ALL FOUR SSDS HAD FAILED. That's really weird. SMART did not (and still does not) show any warning signs for any of them. But I can't read a byte from any of the four.
WTF? Maybe there was a power surge that fried them. But if so, it didn't affect any other equipment. Or maybe their supercaps had all failed and we didn't notice until power cycling? Or, worst of all, maybe some firmware bug caused them to fail to boot after a certain date, or a certain number of power-on hours? Has anybody else had a similar experience?
For the record, these are model STM0001952A6, firmware revision C023.
WTF? Maybe there was a power surge that fried them. But if so, it didn't affect any other equipment. Or maybe their supercaps had all failed and we didn't notice until power cycling? Or, worst of all, maybe some firmware bug caused them to fail to boot after a certain date, or a certain number of power-on hours? Has anybody else had a similar experience?
For the record, these are model STM0001952A6, firmware revision C023.