Abstract: Described herein are systems and methods for replicating an original sequential data volume to a copied sequential data volume. The two sequential data volumes comprise corresponding data blocks with associated write session identifiers. The write session identifiers may correspond to an applicable write operation. When the original sequential data volume is modified, the copied sequential data volume may also be modified for consistency. The write session identifiers of the two data volumes may be sequentially compared to find a mismatch at a modified data block. The data blocks of the copied sequential data volume are replaced, beginning with the modified data block. Instead of replicating the entire original sequential data volume, the modified data block and any subsequent data blocks are replicated in the copied sequential data volume.

Abstract: A toe notch plate is described that attaches to a router and maintains the router at a predefined angle from a work piece. The toe notch plants further maintains a router bit at a consistent and predetermined distance from an edge of the work piece. When the router is moved along the edge of the work piece, the toe notch plate causes a groove to be formed in the work piece, where the groove has a structure suitable for use of a nail gun or a staple gun, and an entry point for nails or staples. This allows the work piece with the groove to be toe nailed to another piece of wood.

Abstract: Described herein are systems and methods for replicating an original sequential data volume to a copied sequential data volume. The two sequential data volumes comprise corresponding data blocks with associated write session identifiers. The write session identifiers may correspond to an applicable write operation. When the original sequential data volume is modified, the copied sequential data volume may also be modified for consistency. The write session identifiers of the two data volumes may be sequentially compared to find a mismatch at a modified data block. The data blocks of the copied sequential data volume are replaced, beginning with the modified data block. Instead of replicating the entire original sequential data volume, the modified data block and any subsequent data blocks are replicated in the copied sequential data volume.

Abstract: The Toe Notch Plate attaches to a standard router and maintains the router at approximately a 75 degree angle from the work piece and is adjustable for use with ¾? or ½? material. It also maintains the router bit a consistent distance from the edge of the work piece. When the router is moved along the edge of the work piece it will create an angled groove providing a resting point for a nail gun and an entry point for brad nails. This allows the grooved piece to be toe nailed to another piece of wood which typically will be perpendicular.