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.
BUILDING A BUILDING B. Example of how building Cost per square meter can vary. Area on plan = 400m Length of walling = 80m Assume 3m high walling @ Currency 200.00/m. Then cost/m = 80 x 3 x 200 400 = Currency 120.00/m-cost per square meter.Area on plan = 400m Length of walling = 208m Assume 3m high walling @ Currency 200.00/m.Then cost/m = 208 x 3 x 200 400 = Currency 312.00/m-cost per square meter. The length of building B thus resulted in an additional expense of Currency 76,800.00 over that of Building A influencing cost per square meter.rea on plan = 400m Length of walling = 208m Assume 3m high walling @ Currency 200.00/m. Then cost/m = 208 x 3 x 200 400 = Currency 312.00/m-cost per square meter. The length of building B thus resulted in an additional expense of Currency 76,800.00 over that of Building A influencing cost per square meter.