3Ware 3W-6800 User Guide - Page 18
RAID 1 arrays offer fault tolerance
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3ware Escalade Storage Switch User Guide into one large volume. The stripe size is user configurable at 64K, 128K, 256K, 512K or 1M. Figure 1. RAID 0 Configuration Example RAID 1 arrays offer fault tolerance Mirrored disk arrays write data to two drives using RAID 1 algorithms (see Figure 2). This gives your system fault tolerance by preserving the data on one drive if the other drive fails. Fault tolerance is a basic requirement for mission critical systems like web and database servers. RAID -1 RAID -1 Figure 2. RAID 1 Configuration Example TwinStorTM Technology adds performance to 3ware's mirrored disk arrays Traditional mirroring techniques do little to improve performance. The adaptive algorithms found in 3ware's TwinStor technology boost performance by distinguishing between random and sequen- 8 www.3ware.com
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