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Originally Posted by
itik
is this the previous virtualization of sun?
Not sure about what you mean. Zones were introduced with Solaris 10.
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is this only works with ultrasparc?
No, Containers/Zones do work with all supported architectures.
Specialized zones are dedicated:
BrandZ zones (a.k.a Linux zones) are supported only on x86 while Solaris 8 zones are only on SPARC.