Database Deployment at RAL

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Database Deployment at RAL
Gordon D. Brown Database Services
Manager e-Science, CCLRC
HEPiX - Spring 2006Rome3rd 7th April
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Overview

• Database Services
• Projects 3D, FTS, SRB, CASTOR, NGS
• Monitoring, Back-ups
• Kit Structure
• Future

Gordon D. Brown e-Science, RAL
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12 June 2020
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Database Services Structure

• Part of the Data Management Group in the
  e-Science Centre
• Structure
• Database Services Manager
• 4 DBA Staff Resource
• 1 System Administration Staff Resources
• More resources with other groups (including
  Tier-1)

Gordon D. Brown e-Science, RAL
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Database Services Set-up

• Running Oracle 10g Enterprise Server with Real
  Application Clusters
• Using RedHat Linux (RHEL 4.0 AS) with Oracle
  Automatic Storage Management (ASM)
• Oracle Data Guard
• Recovery Manager (RMAN)
• Grid Control (Oracle Enterprise Manager)

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Database Services Hardware Structure
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RAL 3D Status

• Test implementation early last year
• Still in test phase, using test machine
• 2 x 2.8GHz xeon processors
• 2GB RAM
• 120GB HDD
• RedHat Enterprise Linux 3

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RAL 3D Status

• Oracle 10.1.0.4 (single instance) installed
• Back-ups configured for RMAN
• Successful set-up of
• Oracle Streams (3D)
• File Transfer Service (FTS)
• Oracle Enterprise Manager (OEM)
• COOL

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RAL 3D Plans

• Hardware arrived Feb 2006
• 2 x 2 node Oracle cluster
• Dual Opteron CPU, 4GB Memory
• Shared storage of 4TB
• Oracle installation and pre-production testing
  April 2006
• Production in autumn 2006

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3D Database Hardware Structure
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LCG Grid Applications

• FTS
• The File Transfer service provides a controlled
  channel for reliable delivery of files from one
  SE to another. It maximises utilisation of lines
  and aims to avoid overloading servers with
  excessive parallel requests.
• LFC
• Maybe later

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File Transfer Service
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Storage Resource Broker

• Developed at San Diego Supercomputer Center
• A distributed file system (Data Grid), based on a
  client-server architecture
• Allows users to access files seamlessly across a
  distributed environment, based upon their
  attributes rather than just their names or
  physical locations
• It replicates, syncs, archives, and connects
  heterogeneous resources in a logical and
  abstracted manner

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Storage Resource Broker

• The MCAT database is a metadata repository that
  provides a mechanism for storing information used
  by the SRB system
• Includes
• Internal system data required for running the
  system
• Application (user) metadata regarding data sets
  being brokered by SRB.

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CASTOR

• Cern Advanced STORage system
• Hierarchical Storage System developed by CERN for
  large scale storage of particle physics data
• Data access to/from scalable farm of disk servers
• Data transparently migrated from disk servers to
  tape according to defined policies
• Database centric architecture (Oracle)

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CASTOR Architecture
Client
RH
Scheduler
RR
GC
StagerJob
MigHunter
NameServer
RTCPClientD
VMGR
RTCPD
VDQM
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National Grid Service

• Facilities for grid computing and data analysis
• To provide the broad user community with access
  to large scale resources through the grid
  interface
• To meet users evolving requirements for a
  production grid service by working with the user
  community, through the User Group established by
  the Core Programme

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National Grid Service

• Configuration

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Back-ups

• Current configuration
• RMAN
• BMAN
• Atlas Data Store
• RMAN Recovery Catalog
• Efficiency Improvements
• Improvements to CCLRC Systems
• Extension to NGS

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Oracle Enterprise Manager
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Questions (hopefully) Answers
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