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 average price per square metre is calculated by dividing the average house price by the average square metres per property (excluding external space). The price per square metre can be converted into price per square foot by dividing by 10.7639104.quare metre per dwelling is based purely on the size of the house and does not take account of outdoor space attached to a dwelling. All property prices are based on the average prices per square metre for transactions during the 12 month period to May for each year.