'Disk data' diaporamas de présentation

Summary of Track 6 Facilities, Production Infrastructures, Networking, Collaborative Tools

Summary of Track 6 Facilities, Production Infrastructures, Networking, Collaborative Tools. Track 6 conveners, presented by Helge Meinhard / CERN-IT 18 October 2013. Track 6 Conveners. Brian Bockelman Ian Collier Alessandro De Salvo Maria Girone Steven Goldfarb Burt Holzman

959 views • 86 slides

Storage

Storage. Jeff Chase Duke University. Storage: The Big Issues. Disks are rotational media with mechanical arms. High access cost ?caching and prefetching Cost depends on previous access ? careful block placement and scheduling. Stored data is hard state .

972 views • 86 slides

Shark

Shark. Hive SQL on Spark. Michael Armbrust. Stage 0: Map-Shuffle-Reduce Mapper(row) { fields = row.split ("t") emit(fields[0], fields[1]); } Reducer(key, values) { sum = 0; for (value in values) { sum += value; } emit(key, sum) ; }. Stage 1: Map-Shuffle

557 views • 43 slides

Disk Storage (E)CKD VS SAN

Disk Storage (E)CKD VS SAN. Frank McDaid zExperts Ltd frank.mcdaid@z-experts.co.uk. A presentation for SMUG June 2012. Introduction. Up until now, the only Operating System running on most z platforms has been z/OS (MVS). z/OS can only use CKD Disks.

535 views • 38 slides

FS Consistency, Block Allocation, and WAFL

FS Consistency, Block Allocation, and WAFL. Summary of Issues for File Systems. 1. Buffering disk data for access from the processor. block I/O (DMA) must use aligned, physically resident buffers block update is a read-modify-write 2. Creating/representing/destroying independent files.

494 views • 35 slides

551 views • 35 slides

Basics of File System Design

Basics of File System Design. Where do file systems fit in the OS? File control data structures. File Systems and the OS. App 1. App 2. App 3. App 4. system calls. The file system API. f ile container operations. directory operations. file I/O.

387 views • 27 slides

Recovery System

Recovery System. ?????? ???? ???????. ?????? ????. Transaction failure : Logical errors : transaction cannot complete due to some internal error condition System errors : the database system must terminate an active transaction due to an error condition (e.g., deadlock)

384 views • 27 slides

CSC 660: Advanced OS

CSC 660: Advanced OS. Virtual Filesystem. Topics. Filesystems Filenames and Pathnames File Attributes File Operations Virtual Filesystem VFS Objects Processes and Files. Why filesystems?. Tree Structure. /. bin. boot. tmp. usr. var. bin. lib. X11R6. ls. grub. less. vmlinuz.

397 views • 25 slides

Berkley Data Analysis Stack

291 views • 12 slides

Oracle Solaris Zones

Oracle Solaris Zones. Study Purpose Only. www.networkuser.wordpress.com. Zones Overview. A zone is a virtualized operating system environment created within a single instance of the Oracle Solaris operating system .

313 views • 12 slides

End-to-end Data Protection and Tapes (07-373r4)

End-to-end Data Protection and Tapes (07-373r4). Kevin Butt. Customers are looking for solutions using standards based end-to-end data protection End-to-end data protection in the standards Disk based solutions are getting chosen over tape based solutions.

217 views • 11 slides

End-to-end Data Protection and Tapes (07-373r4)

End-to-end Data Protection and Tapes (07-373r4). Kevin Butt. Customers are looking for solutions using standards based end-to-end data protection End-to-end data protection in the standards Disk based solutions are getting chosen over tape based solutions.

111 views • 11 slides

DAQ Software Support for PSEC at ANL and MTEST

DAQ Software Support for PSEC at ANL and MTEST. Ed May HEP Division Argonne National Laboratory. PSEC group meeting Talk Presented 8 April, 2008. Goals.

127 views • 4 slides