Date: Sun, 16 Mar 2014 08:33:13 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: cruxpot <cruxpot@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Another case of the vanishing disk Message-ID: <alpine.BSF.2.00.1403160828130.21326@wonkity.com> In-Reply-To: <CAPYfQ9ztmzYWSRoNLJk2Z-mTAdDti48ZOJrKT0LEEpuWf5SqHg@mail.gmail.com> References: <CAPYfQ9z-YUzKDAh3=V3_m1wmDtds4NzcewTq0wLUD9LWt3VaGA@mail.gmail.com> <20140316130936.3f2d18e0@X220.alogt.com> <CAPYfQ9ycxEr%2B-qPBC6qY6tvLrTMqT3guU%2B8q%2BbK2_RAj=WH1tw@mail.gmail.com> <20140316134309.2edc258a@X220.alogt.com> <CAPYfQ9ztmzYWSRoNLJk2Z-mTAdDti48ZOJrKT0LEEpuWf5SqHg@mail.gmail.com>
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On Sun, 16 Mar 2014, cruxpot wrote: > Back in December, it was the power supply. That was a cheap Rosewill > 300W PSU. The new is a Corsair CX500 (500W). The system basically just > has an old SCSI card and 4 Green Barracuda 2TB disks and a low end > pci-e video card and pci-e gigabit NIC. How can the PSU be the problem > since I replaced it and it's more than adequate? As before, this does not sound like a power supply problem to me. "Green" drive power management is sometimes a problem. Idle drives spin down to save power, then don't report ready quickly and the system sees them as down. If the drives allow it, disable power management. The sysutils/ataidle port can do that. However, some drives ignore the settings. Another possibility is to set a longer delay before spin-down. Seagate might have utility software that can modify the settings on the drives.
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