发明名称 Saving log data using a disk system as primary cache and a tape library as secondary cache
摘要 Various embodiments are provided for saving a log data in a hierarchical storage management system using a disk system as a primary cache with a tape library as a secondary cache. The user data is stored in the primary cache and written into the secondary cache at a subsequent period of time. Blank tapes in the secondary cache is prepared for storing the user data and the log data based on priorities. At least one of the blank tapes is selected for copying the log data and the user data from the primary cache to the secondary cache based on priorities. The log data is stored in the primary cache. The selection of at least one of the blank tapes completely filled with the log data is delayed for writing additional amounts of the user data.
申请公布号 US8949524(B2) 申请公布日期 2015.02.03
申请号 US201314029435 申请日期 2013.09.17
申请人 International Business Machines Corporation 发明人 Iwasaki Norie;Masuda Koichi;Minoura Tadaaki;Nakamura Tomokazu;Sohda Takeshi;Tsuda Takahiro
分类号 G06F12/02;G06F12/08;G06F3/06;G06F11/07 主分类号 G06F12/02
代理机构 Griffiths & Seaton PLLC 代理人 Griffiths & Seaton PLLC
主权项 1. A system, for saving a plurality of log data in a hierarchical storage management (HSM) system using a disk system as a primary cache with a tape library as a secondary cache, comprising: at least one tape drive; and at least one processor device, operable with the at least one tape drive, wherein the at least one processor device: stores user data in the primary cache, the user data being written from the primary cache into the secondary cache at a subsequent period of time,prepares a plurality of blank tapes in the secondary cache for storing the user data and the plurality of log data based on a plurality of priorities, the plurality of blank tapes are unused until the user data is written to at least one tape media,selects at least one of the plurality of blank tapes for copying the plurality of log data and the user data from the primary cache to the secondary cache based upon the plurality of priorities, andstores the plurality of log data in the primary cache, wherein the plurality of log data is wrapped in the primary cache and a copy of the plurality of log data being copied into the plurality of blank tapes, the plurality of blank tapes being configured to appear blank to a user for storing the user data.
地址 Armonk NY US