Alec Daniel Email & Phone Number

Round Rock, Texas, Us

Current: Dell Corp (formerly EMC)., Hopkinton, MAMidrange Storage Division. Member of the file system data path team. Extended the file system’s virtual mapping layer, located between the indirect blocks and the file system data, to support both in-line data compression and deduplication. Implemented the state machine that managed the data block (compressed, uncompressed, and/or duplicated) mappings, the meta-data commits, and the weight management that allowed multiple files to share physical disk blocks. Developed the code to synchronize in-flight file system IO with the concurrent relocation of the underlying physical flash disk storage. It handled all disk mirror state transitions and address range locking required to ensure data integrity during these data migrations. Responsible for the file extend and truncate functionality. The feature consisted of foreground processing of the NFS requests, and dispatching the work to background service threads where the actual disk space management occurred. The code was able to both concatenate sequential requests into a single operation and correctly time-order overlapping requests. Member of the Sparse Volume team responsible for the virtual storage technology that enabled features such as thin storage, and dynamic tiering. Implemented enhancements that improved system reliability and performance (e.g., high priority flushing to disk of critical meta-data).

Edge Switching System Software. Responsibilities included designing the object-oriented (C++) redundancy component for a new product that supports both control cards (1:1) and I/O cards (1:N). The module consisted of distributed, hierarchical state machines that manage the clients through polymorphic adaptor objects. Manager of Core Switching System Software. Oversaw all development for the CBX500 and GX550 switches in the following areas: configuration management, redundancy, distributed messaging, system monitoring, event logging, and SNMP agent. These components deployed differing degrees of object-oriented design, and all implementation was in C++. The position required being personally involved at the implementation level, as well as technically directing the group. Other tasks included the day-to-day running an engineering section (e.g. scheduling, resource allocation, budgeting, mentoring, etc.) Member of the project management team responsible for multiple major software releases. Tasks included managing a geographically disperse team, driving release deliveries, and developing process methodology. Core Switching System Software. Designed and delivered the internal configuration management system for the MSC25000. This component provided a polymorphic API that allowed both local and remote applications to read, write, upgrade, and synchronize the switches' databases. The feature list included a connection-based, client-server architecture, file locking, transaction processing, and a disk cache.

Espoo, Southern Finland, Fi

Member of the disk cache team that produced the Medley file system for Windows 95/NT. Medley allowed PCs to share their local RAM and disk storage as a single coherent logical file system. Tasks included contributing to the object-oriented design and implementation of the distributed caching disk subsystem in a multi-threaded environment. Specific deliverables included implementing the global disk directory's B+ tree search code, its page mirroring code, and its safe-write functionality.

Ms Electrical Engineering

Education record