Acer Veriton M661 Intel Matrix Storage and RAID - Page 7

Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1.1 Disk 1 Block A1 Block B1 Block Cp Disk 2 Block A2 Block Bp Block C1 Disk 3 Block Ap Block B2 Block C2 Physical disks 120 GB Physical disk 120 GB Physical disk 120 GB Logical disks 240 GB RAID10 (RAID1+0: striping + mirroring) • A combination of RAID1 and RAID0 - mirroring and striping, but without parity. • RAID10 is used for both replicating and sharing data among disks. • RAID10 is often the primary choice for high-load databases, because the lack of parity to calculate gives it faster write speeds. • RAID10 volume capacity = 2 x (capacity of smallest HDD) RAID 0 RAID 1 Disk 1 Block A1 Block A3 Block A5 Disk 2 Block A1 Block A3 Block A5 RAID 1 Disk 3 Block A2 Block A4 Block A6 Disk 4 Block A2 Block A4 Block A6 Physical disks 120 GB Physical disks 120 GB Physical disks 120 GB Physical disks 120 GB Logical disks 240 GB RAID0 Characteristics/Advantages ¾ RAID0 implements a striped Disadvantages ¾ Not a "True" RAID because it is disk array, the data is broken NOT fault-tolerant down into blocks and each ¾ The failure of just one drive block is written to a separate will result in all data in an disk drive ¾ I/O performance is greatly array being lost ¾ Should never be used in improved by spreading the I/O mission-critical load across many channels and environments drives ¾ Best performance is achieved when data is striped across 7/21