RAID 1 (Mirroring and Duplexing) Comparing mirroring and duplexing Mirroring is the simplest method of avoiding data loss when a single disk fails. During writes, data is sent to both disks. During reads, different data can be read from both disks, which provides good read Performance. Duplexing is another form of keeping a copy of data. Where mirroring uses a single controller, duplexing can also handle a controller failure. Duplexing requires an operating system that supports RAID 1.
This site says cost of tiling per square metre is between $95 and $170 psm for floor tiles and $90 and $160 for wall tiles. Those prices include tiles so take $30 psm off those.
The Costs. Minimum cost of bathroom wall tiling: $2.50-$3.00 per square foot. Maximum cost of bathroom wall tiling: $7.00-$8.00 per square foot. When considering a bathroom wall tiling project, homeowners are often most concerned with the costs associated with the installation.With bathroom tiling, costs can vary dramatically depending on the overall quality of the product.aximum cost of bathroom wall tiling: $7.00-$8.00 per square foot. When considering a bathroom wall tiling project, homeowners are often most concerned with the costs associated with the installation. With bathroom tiling, costs can vary dramatically depending on the overall quality of the product.