PPT-FFS: The Fast File System

CS 161 Lecture 13 33017 The Original NotFast Unix Filesystem Directory Name i number Inode Metadata Direct ptr Indirect ptr 2indirect ptr Data Disk Superblock. VP . Fully Automated . Tiered . Storage. Powerful. Trusted. Smart.. Agenda. EMC Symmetrix VMAX Update . Fast VP . Automated . Tiered . Storage. Basis for FAST. Implementation Characteristics. Operational Considerations for Performance. Rebecca Glaudell . CERN REU 2013. be-abp. -. cC3. with thanks to:. rogelio. . tomas. . garcia. Javier . Barranco. Garcia. BE – ABP – CC3. Be. ams department. A. ccelerator . B. eam . P. hysics. File Concept. Contiguous logical address space. Types: . Data. numeric. character. binary. Program. File Structure. None - sequence of words, bytes. Simple record structure. Lines . Fixed length. Variable length. H-FILE P-FILE H-FILE P-FILE H-FILE P-FILE TECHNICAL VARIABLES SOCIO-DEMOGRAPHIC VARIABLES irregular/casual/odd jobs for payODDJOB_CIdentifiersLiving arrangementsunofficial/non-registered/untaxed workN a.k.a. OrangeFS. By Collin Gordon and Lisa Kosiachenko. 1. What is PVFS?. 2. Background information. PVFS - parallel, distributed filesystem for Linux clusters. Used in High-Performance Computing at large scale (while Hadoop is primarily used in cloud computing). Where do file systems fit in the OS?. File . control data structures. A common internal interface for file systems. The file system API. File Systems and the OS. . system calls. UNIX FS. DOS FS. CD FS. sawtooth. effect. H. . Geng. CEPC AP group meeting. 2016.11.25. Contents. Sawtooth. with FFS. Summary. Sawtooth. in FFS. 算出对撞. 区每一块. B. 铁的同步辐射能量损失，然后对相应的元件进行能量强度修正. Main Points. File layout. Directory layout. File System Design Constraints. For small files:. Small blocks for storage efficiency. Files used together should be stored together. For large files:. Contiguous allocation for sequential access. Annette N. Brown, Deputy Director for AIES. Outline. Review questions. Inclusion criteria. Theory of change. Search pipeline. Results. Fun methods finding. “Interventions in Developing Nations for Improving Primary and Secondary School Enrollment of Children: A Systematic Review”. sees VLeZBo[: ,nteJratLnJ LocaO FLOe S\stems Yupu =KanJ CKrLs DraJJa Andrea ArpacL-Dusseau RemzL ArpacL-D Incredibly popular: Dropbox has 100 million+ usersBack up files to th NAPCRG Annual Meeting, October 27, 2015. Tara Kiran MD MSc CCFP . Dept of Family and Community Medicine, St. Michael’s Hospital, University of Toronto and the Institute for Clinical and Evaluative Sciences. Interface. File Concept. Access Methods. Directory Structure. Allocation Methods. Objectives. To explain the function of file systems. To describe the interfaces to file systems. To discuss file-system design tradeoffs, including access methods, file sharing, file locking, and directory structures. May 2013. Purpose & Types of Data Exchange. AHCCCS will manage exchange of encounter and claims data to Contractors in order to eliminate “blind spots” for services provided to a member shared by multiple programs. June 16, 2015. Managed care in Missouri. Size of Populations. MC. 458,338. 49%. MC–like FFS. 238,165. 25%. ABD FFS. 240,320. 26%. 2. Number of Counties.  . Eastern Region (13).  . Central Region (28).