LMS Technical Requirements

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31 Οκτ 2013 (πριν από 4 χρόνια και 9 μέρες)

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University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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LMS

Technical Requirements





University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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8


L
earning
M
anagement
S
ystem

Application


Server
Configuration



Hostname

lmprdweb01
-

web24.umassonline.net


System Configuration

i686

Machine Architecture

Genuine Intel i686

Hardware Provider

Intel Based
Hardware

Memory Size: 12288MB = (12 GB)

Local Disk Capacity (GB)

10.83


Hardware
:


Other considerations or comments

All application servers reside on Oracle VM’s while the 4 Oracle RAC DB servers reside on
dedicated blade hardware. 2 Blade enclosure groups are managed through the Oracle
Virtualization software such that odd IP address VM’s come up on the odd group and
even IP
address VM’s come up on the even group.
Web Logic

machines were configured based on blade
enclosure groups such that user sessions are replicated across physical blade enclosure hardware.
Multicast testing was conducted across all VM’s and blade
enclosures to ensure multicast traffic
can pass between enclosures without issue.

Software:

Web logic

version

9.2.3

Blackboard learn Version

vista 8.0.
4


University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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Server Operating System:


Application
Server:

Red

Hat Enterprise Linux AS release 4 (Nahant Update 5)
2.6.9 55.ELxenU

(32
-
bit)

Blades

/
Blade enclosures



Weblogic machines were not configured such that session replication was being done
across physical hardware. Weblogic
machines

we
re

configured b
ased on the Oracle VM groups.
These groups were set up such that odd IP’d V
M
’s are started on two of the blades enclosures
and even IP’d VMs are started on the remaining two blade enclosures. This helps to ensure that
all sessions are replicated across phy
sical hardware protecting end user sessions from a physical
blade o
r

blade enclosure failure.












University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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Virtualization


2 Blade enclosure groups are managed through the
Oracle

Virtualization
Manager
software
(OVM ).




App Server

Weblogic version

9.2.3

Peak Concurrent Users
/
Peak Bandwidth in
/
Peak Bandwidth out


With the current configuration and hardware deployed, it is anticipated that the UMOL

system will be able to handle greater than 4.5 million hits/hour.





University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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Load Balancer
Fail
-
over
Redundancy:

:



Load Balancer Details:



The Cisco ACE Application Control Engine Module for Cisco Catalyst 6500 Series Switches and Cisco 7600
Series Routers is a next
-
generation load
-
balancing and application
-
delivery solution. A member of the

Cisco family of
Data Center 3.0 solutions, the module:


University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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Helps ensure business continuity by increasing application availability



Improves business productivity by accelerating application and server performance



Reduces data center power, space, and coolin
g needs through a virtualized architecture



Helps lower operational costs associated with application provisioning and scaling

It achieves these goals through intelligent load
-
balancing and content
-
switching technologies integrated with
acceleration and s
ecurity capabilities. A virtualized architecture and role
-
based administration help you provision and
deliver multiple applications from a single module to increase data center scalability.


Database


Oracle Database 10g 10.2.0.4.0

Server Configuration

Hostname

lmprd001.umasscs.net
(lmprd001)

Local Disk Capacity (GB)


147.73


System Configuration

i686

Clock Frequency (MHz) No of CPUs

1


Machine Architecture

Genuine Intel

i686



Hardware Provider

Intel Based Hardware

Number of CPU boards

1

Memory Size (MB)

16022

Number of IO devices

21


Hostname:
lmprd001.umasscs.net
(lmprd001)


High Availability/RAC:

Version:

10.2.0.4.0

Oracle Real Application Clusters (RAC)

is an option to the award
-
winning Oracle Database Enterprise Edition.
Oracle RAC is a cluster database with a shared cache architecture that overcomes the limitations of traditional
shared
-
nothing and shared
-
disk approaches to provide highly scalable and
available database solutions for all your
business applications. Oracle RAC is a key component of Oracle's private cloud architecture. Oracle RAC support is
included in the Oracle Database Standard Edition for higher levels of system uptime.


Oracle RAC O
ne Node

is a new option available with Oracle Database 11
g

Release 2. Oracle RAC One Node is a
single instance of an Oracle RAC enabled database running on one node in a cluster. This option adds to the
flexibility that Oracle offers for database consolidation while reducing management overhead by providing a sta
ndard
deployment for Oracle Databases in the enterprise.


University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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Back
-
up
:

UMOL production servers are backed up utilizing EMC Avamar technology. The entire server,
including any mounted file systems, is backed up daily to Avamar disk storage; each backup is
ret
ained for 30 days. Each backup is replicated to offsite Avamar disk storage where the backup
is retained for 30 days.

UMOL production databases are backed up utilizing EMC Celerra, Networker and DL3D3000
technologies as well as Quantum i500 technology. The

data is stored on EMC Celerra (NAS,
Network Attached Storage) and checkpointed daily on the NAS with each checkpoint retained
for 7 days. A weekly NDMP backup of one checkpoint is taken via Networker and placed on
DL3D3000 virtual tapes where it is retain
ed for 30 days. Once a month an NDMP backup of one
checkpoint is taken via Networker and placed on a Quantum i500 library DLT4 physical tape.
When a DLT4 tape fills it is stored offsite at an Iron Mountain facility with a retention of 1 year.




NAS

Network
Attached Storage (NAS) is a special purpose server dedicated to serving file systems

over a network alleviating storage processing on a Application server. NAS is a simple and cost

effective way to achieve fast data access to multiple clients at a file sys
tem level. NAS provides

high reliability, hot swappable disks, replication, and Checkpoint technologies.



University of Massachusetts

Amherst * Boston * Dartmouth * Lowell * President’s Office * Worcester


UMOL


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EMC Celerra NS80 series



Redundant Storage processors, power and network interfaces


Raid



EMC Clariion CX

Series Storage



RAID 5 (4+1) Data protection.

Data will be striped across 4 disks and 1 for parity.

Redundant Storage processors, power and network interfaces