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parity disk应该也能弄tier吧,但SSD的数量应该至少3个。我回去用虚拟机试试看。
“To create a storage space with storage tiers, the virtual disk must use fixed provisioning, and the number of columns will be identical on both tiers (a four-column, two-way mirror with storage tiers would require eight solid-state drives and eight hard disk drives).”
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