3Ware 3W-6800 User Guide - Page 41
Select RAID configuration, Create Disk Array Display, RAID 5 Example
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3ware Disk Array Configuration Utility Create Disk Array Note: Creating an array will overwrite existing data on its drives. Create a disk array from these drives: Port 1 - IBM-DTLA-387815 Port 2 - IBM-DTLA-387815 Port 3 - IBM-DTLA-387815 512 M 512 M 512 M Select RAID Configuration: Array's Write Cache State: RAID 5 enable Stripe Size: 64 KB OK Cancel Alt-F1 Help Previous/Next Enter Change Value Esc Cancel Figure 11. Create Disk Array Display, RAID 5 Example Select RAID configuration The Escalade Storage Switch gives you a choice of four RAID configurations. Select one. • Stripe (RAID 0): maximizes performance and capacity through a process called striping. High performance arrays write portions of a single file across multiple drives. There is no fault tolerance. • Mirror (RAID 1): duplicates or "mirrors" the data on both drives. No data will be lost if one of the drives fails. • RAID 10: combines mirroring and striping, providing both fault tolerance and high performance. RAID 10 arrays require a minimum of four drives. Configurations consist of 4, 6 or 8 drives. • RAID 5: combines parity data and striping, providing fault tolerance, high capacity and high storage efficiency. The parity data is distributed across all drives, rather than being concentrated on www.3ware.com 31
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