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.
Average Labour Cost/Price to Tile a Wall. To clarify the following prices it is recommended that you read the article in the INFORMATION box below the PRICESâ¦. (These prices are based on a tradesmanâs rate of Â£150.00 per day and a labourer if required at Â£100.00 per day. This includes the cost of buying and collecting any materials, dumping any waste if necessary and any incidental materials they will need. The minimum price will usually be for a half day)