First scrub of a raidz pool - faster than expected?

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offender

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Nov 25, 2011
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My system had it's first 30 day scrub today. I had previously done a scrub before but only on the 250gb disk I had in there before setting up a proper 4x2Tb RAIDZ1 pool.

Anyway - the scrub took just 4h 46m for 3.24Tb of data which seems fast?

It is a Proliant microserver (dual core AMD Turion 1.5Ghz Neo2) with 8Gb of ECC RAM (DDR3 10600) and four WD20EARX Green drives which get around 280mb/s read speeds when in the RAIDZ pool.

Is this a reasonable amount of time? I was expecting 10+ hours.
 
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