Adaptec 2110S User Guide - Page 139
Comparing the Selection Criteria, Array Type, Criteria, Volume Set, Stripe Set, RAID 0, Mirror Set
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Choosing Your Array Type Comparing the Selection Criteria The table below rates how well each array type achieves each of the selection criteria. The table uses a scale of 1 to 5: 1 = least effective; 5 = most effective. Use the table below to compare the array types according to the criteria you rated in the previous section. For example, if randomwrite performance and load balancing are your most important criteria, then choose a stripe set array type. Array Type Volume Set Stripe Set (RAID 0) Mirror Set (RAID 1) RAID 5 Set Stripe Set of Mirror Sets (RAID 0/1) Stripe Set of RAID 5 Sets (RAID 0/5) Criteria Random-read performance Random-write performance Sequential-read performance Sequential-write performance Load balancing Cost per usable array space Fault tolerance Expansion ❒ 1 4 2 4 5 5 3 5 2 1 3 2 1 5 2 3 5 4 3 4 5 1 5 2 1 4 1 3 3 5 5 5 1 4 1 3 No No Yes Yes Yes Yes Yes Yes Yes Yes No No B-9