Taming the storage dragon: the adventures of hoTMaN

Authors:
Shahram Ghandeharizadeh;Andrew Goodney;Chetan Sharma;Chris Bissell;Felipe Carino;Naveen Nannapaneni;Alex Wergeles;Aber Whitcomb
Affiliations:
USC, Los Angeles, CA, USA;USC, Los Angeles, CA, USA;USC, Los Angeles, CA, USA;MySpace, Beverly Hills, CA, USA;MySpace, Beverly Hills, CA, USA;MySpace, Beverly Hills, CA, USA;MySpace, Beverly Hills, CA, USA;MySpace, Beverly Hills, CA, USA
Venue:
Proceedings of the 2009 ACM SIGMOD International Conference on Management of data
Year:
2009

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Abstract

HoTMaN (HoT-standby MaNager) is a joint project between MySpace and USC Database Laboratory to design and develop a tool to ensure a 24x7 up-time and ease administration of Terabytes of storage that sits underneath hundreds of database servers. The HoTMaN tool's innovation and uniqueness is that it can, with a few clicks, perform operational tasks that require hundreds of keyboard strokes by "trusted trained" experts. With HoTMaN, MySpace can within minutes migrate the relational database(s) of a failed server to a hot-standby. A process that could take over 1 hour and had a high potential for human error is now performed reliably. A database internal to HoTMaN captures all virtual disks, volume and file configurations associated with each SQL Server and candidate hot-standby servers where SQL server processing could be migrated. HoTMaN is deployed in production and its current operational benefits include: (i) enhanced availability of data, and (ii) planned maintenance and patching.