scholarly journals SEARCHING THE NUCLEAR SCIENCE ABSTRACTS DATA BASE BY USE OF THE BERKELEY MASS STORAGE SYSTEM.

1971 ◽  
Author(s):  
G. L. Smith ◽  
J. J. Herr
Keyword(s):  
Data Base ◽  
Storage System ◽  
Mass Storage ◽  
Nuclear Science ◽  
Mass Storage System

scholarly journals The Management Strategy of Metadata in Large-scale Network Storage System

2018 ◽  
Vol 228 ◽  
pp. 01011
Author(s):  
Haifeng Zhong ◽  
Jianying Xiong
Keyword(s):  
Large Scale ◽  
Storage System ◽  
Hash Table ◽  
Distributed Hash Table ◽  
Distributed Data ◽  
Mass Storage ◽  
Large Scale Network ◽  
Network Storage System ◽  
Mass Storage System ◽  
Scale Network

The wan Internet storage system based on Distributed Hash Table uses fully distributed data and metadata management, and constructs an extensible and efficient mass storage system for the application based on Internet. However, such systems work in highly dynamic environments, and the frequent entry and exit of nodes will lead to huge communication costs. Therefore, this paper proposes a new hierarchical metadata routing management mechanism based on DHT, which makes full use of the node stabilization point to reduce the maintenance overhead of the overlay. Analysis shows that the algorithm can effectively improve efficiency and enhance stability.

scholarly journals The INFN-CNAF Tier-1 GEMSS Mass Storage System and database facility activity

2015 ◽  
Vol 608 ◽  
pp. 012013 ◽  
Author(s):  
Pier Paolo Ricci ◽  
Alessandro Cavalli ◽  
Luca Dell'Agnello ◽  
Matteo Favaro ◽  
Daniele Gregori ◽  
...  
Keyword(s):  
Storage System ◽  
Mass Storage ◽  
Tier 1 ◽  
Mass Storage System

MASS STORAGE SYSTEM BY USING BROADCAST TECHNOLOGY

1996 ◽  
Author(s):  
HIROFUMI FUJII ◽  
RYOSUKE ITOH ◽  
ATSUSHI MANABE ◽  
AKIYA MIYAMOTO ◽  
YOUHEI MORITA ◽  
...  
Keyword(s):  
Storage System ◽  
Mass Storage ◽  
Mass Storage System

scholarly journals HSM and backup services at INFN-CNAF

2019 ◽  
Vol 214 ◽  
pp. 04009
Author(s):  
Alessandro Cavalli ◽  
Daniele Cesini ◽  
Enrico Fattibene ◽  
Andrea Prosperini ◽  
Vladimir Sapunenko
Keyword(s):  
Nuclear Physics ◽  
Hadron Collider ◽  
Storage System ◽  
Scientific Data ◽  
It Services ◽  
Mass Storage ◽  
Space Management ◽  
Current Configuration ◽  
Mass Storage System ◽  
Backup And Recovery

IBM Spectrum Protect (ISP) software, one of the leader solutions in data protection, contributes to the data management infrastructure operated at CNAF, the central computing and storage facility of INFN (Istituto Nazionale di Fisica Nucleare – Italian National Institute for Nuclear Physics). It is used to manage about 55 Petabytes of scientific data produced by LHC (Large Hadron Collider at CERN) and other experiments in which INFN is involved, stored on tape resources as the highest latency storage tier within HSM (Hierarchical Space Management) environment. To accomplish this task, ISP works together with IBM Spectrum Scale (formerly GPFS - General Parallel File System) and GEMSS (Grid Enabled Mass Storage System), an in-house developed software layer that manages migration and recall queues. Moreover, we perform backup/archive operation of main IT services running at CNAF, such as mail servers, configurations, repositories, documents, logs, etc. In this paper we present the current configuration of the HSM infrastructure and the backup and recovery service, with particular attention to issues related to the increasing amount of scientific data to manage, expected for the next years.

scholarly journals Best Practices in Accessing Tape-Resident Data in HPSS*

2019 ◽  
Vol 214 ◽  
pp. 04022
Author(s):  
David Yu ◽  
Guangwei Che ◽  
Tim Chou ◽  
Ognian Novakov
Keyword(s):  
Storage System ◽  
Access Time ◽  
Mass Storage ◽  
File Access ◽  
Modern Enterprise ◽  
Mass Storage System ◽  
Tape Storage ◽  
New Feature ◽  
Retention Intervals ◽  
Capacity Cost

Tape is an excellent choice for archival storage because of the capacity, cost per GB and long retention intervals, but its main drawback is the slow access time due to the nature of sequential medium. Modern enterprise tape drives now support Recommended Access Ordering (RAO), which is designed to reduce data recall/retrieval times. BNL SDCC's mass storage system currently holds more than 100 PB of data on tapes, managed by HPSS. Starting with HPSS version 7.5.1, a new feature called “Tape Order Recall (TOR) has been introduced. It supports both RAO and non-RAO drives. The file access performance can be increased by 30% to 60% over the random file access. Prior to HPSS 7.5.1, we have been using an in-house developed scheduling software, aka ERADAT. ERADAT accesses files based on the file logical position order. It has demonstrated a great performance over the past decade long usage in BNL. In this paper we will present a series of test results, compare TOR and ERADAT's performance under different configurations to show how effective TOR (RAO) and ERADAT perform and what is the best solution in data recall from SDCC's tape storage

scholarly journals The Grid Enabled Mass Storage System (GEMSS): the Storage and Data management system used at the INFN Tier1 at CNAF.

2012 ◽  
Vol 396 (4) ◽  
pp. 042051 ◽  
Author(s):  
Pier Paolo Ricci ◽  
Daniele Bonacorsi ◽  
Alessandro Cavalli ◽  
Luca Dell'Agnello ◽  
Daniele Gregori ◽  
...  
Keyword(s):  
Data Management ◽  
Management System ◽  
Storage System ◽  
Data Management System ◽  
Mass Storage ◽  
Mass Storage System
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