Posted Jan 27, 2008 21:58 UTC (Sun) by anton
In reply to: Using fsck to defend against disk failures?
Parent article: ext3 metaclustering
Disk drives have not used servo tracks for a long time, because one
could no longer align all the heads precisely enough (e.g., because of
thermal expansion). Instead, servo information exists on each
platter, interspersed in some way with the data. I don't know when
this change happened; a 15+-year old disk (486 generation) might still
have a servo track. But couldn't the symptoms also be explained by
the failure of just one of the heads?
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