On Mon, 18 Apr 2011 16:58:28 +0000, Gautham Ganapathy wrote:
Hi I am trying out FreeBSD on ZFS using the PC-BSD 8.2 installer. I have it installed on a Western Digital USB HDD connected to an Alienware m11x laptop. It seems to work well except that once in a while, anyapplication performing a write freezes for a few seconds (around 15 orso) and looking at top shows their states to be in zio. Is this because it was installed on a USB drive?
I've experienced the same behavior on my external USB WD drive. I found that many of the Western Digital external drives will spin-down after some period of time. The wait you're experiencing is probably the time it takes to spin-up. WD has a utility to disable the spin-down feature. It's windows only, however. http://support.wdc.com/product/download.asp?groupid=304&sid=17&lang=en - Craig
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