CONFIG_STORCENTER is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

IOMEGA StorCenter

modulename: storcenter.ko

configname: CONFIG_STORCENTER

Linux Kernel Configuration
└─>IOMEGA StorCenter
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
Select STORCENTER if configuring for the iomega StorCenter
with an 8241 CPU in it.

source code:
arch/powerpc/platforms/embedded6xx/storcenter.c