Adaptec 2169400-R User Guide - Page 159
Non-redundant Logical Drives (RAID 0)
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Appendix C: Selecting the Best RAID Level ● 159 Non-redundant Logical Drives (RAID 0) A logical drive with RAID 0 includes two or more disk drives and provides data striping, where data is distributed evenly across the disk drives in equal-sized sections. However, RAID 0 arrays do not maintain redundant data, so they offer no data protection. Compared to an equal-sized group of independent disks, a RAID 0 array provides improved I/O performance. Drive segment size is limited to the size of the smallest disk drive in the logical drive. For instance, a logical drive with two 250 GB disk drives and two 400 GB disk drives can create a RAID 0 drive segment of 250 GB, for a total of 1000 GB for the volume, as shown in this figure. Disk Drive 1 250 GB Drive Segment Size (Smallest Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in Logical Drive Disk Drive 1 1 5 ... 997 Disk Drive 2 2 6 ... 998 Disk Drive 3 3 7 ... 999 Disk Drive 4 4 8 ... 1000 Unused Space = 150 GB Unused Space = 150 GB RAID 0 Logical Drive = 1000 GB