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45 Cards in this Set

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What is failover?
In a server cluster, each computer is running the same critical applications, so that if one server fails, the others detect the failure and take over at a moment's notice.
What is failback?
When the failed node returns to service, the nodes take notice, and the cluster begins to use the recovered node again.
T or F? Server Clustering is intended to provide availability for data, not applications.
False. Server Clustering is intended to provide availability for applicaitons, not data.
What is a stateful application?
Server clusters designed for applications that have long-running in-memory states or large, frequently changing data sets. They include database servers such as SQL, E-mail and messing servers, and file and print services.
How are computers (nodes) connected in a server cluster?
Noes are connected to a common data set, such as storage devices on a SCSI bus or a storage area network (SAN)
What is the difference between active and passive?
Active nodes receive and process requests from clients, while a passive node remains idle and functions as a fallback should an active node fail.
How do active and passive nodes work?
Normally, the active node runs the database server application and receives requests from database clients and accesses the Network-Attched Storage device. When this fails, the passive node detects the failure, and becomes active.
What is the disadvantage of using active/passive node designs? What is a better way?
The passive nodes are normally doing nothing but functioning as a standby. Depending on the capabilities of the application, you can also design a server cluster with multiple actives nodes tht share teh processing among themselves.
True or
False? A server cluster has its own anme and IP address separate from those individual computers in the cluster.
True
How many nodes in a Server cluster are supported by Enterprise Edition and Datacenter Edition of Microsoft 2003?
They both support clusters of up to eight nodes. Standard Edition does not support clusters.
Can you create a cluster with computers running different versions of the operating systems? (Enterprise and Datacenter, etc)
NO
What is Network Load Balancing?
NLB is anohter type of clustering which adds high scalability. It is intended for applications with relatively small data sets that rarely change and do not have long-running in-memory states. These are called stateless applications.
What is a stateless application?
They typically include Web, File Transfer Protocol and Virtual private netowrk servers hosting state content.
True or False?
All Nodes in a NLB are passive nodes?
False
How are nodes configured in an NLB?
Instead of being connected to a single data source, as in a server cluster, the servers in an NLB cluster all have identical cloned data and all are aactive nodes.
Why isn't NLB suitable for stateful applications such as database and e-mail servers?
The cluster nodes do not share the same data. If one server in an NLB cluster were to receive a new record, the others would not have that record until the next database replication. Replication is an occasional event, not an ongoing occurrence.
How about scalability in a NLB?
When traffic increases, you simply add more servers to the cluster. Each server than has to process a smaller share of incoming requests.
How many computers are supported by Enterprise, Datacenter Edition?
up to 32 computers.
What are the three types of failures that occur in clustering?
Software failures, Hardware failures, and Site failures.
What considerations should you take into account when planning availability requirements?
The nature of application you are running, size, location and distribution of your user base, and the role of the application in your organization.
How do you quantify availability?
A Percentage reflecting the amount of time that an application is up and running.
What does achieving a specific level of abailability involve?
Might need fault-tolerant hardware, might need an extensive hardware and software evaluatin and testing plan, estblish opertional policies for the entire IT department. Expense is also a consideration.
How do you scale up?
By upgrading the computer's hardware, improving server performance
How do you scale out?
Add servers to an existing cluster. It is easier to add servers to an NLB cluster.
Windows Server 2003, Standard edition has how many Server Clusters?
A. 8
B. 16
C. 0
D. 4
Windows server 2003 Enterprise Edition Supports how many clusters?
A. 8
B. 16
C. 0
D. 4
Windows Server 2003 Datacenter supports how many Server clusters?
A. 8
B. 16
C. 2
D. 4
Windows 2000 Advanced Server supports how many server clusters?
A. 8
B. 16
C. 2
D. 4
Windows 2000 Datacenter Server supports how many clusters?
A. 8
B. 16
C. 2
D. 4
Windows Server Standard Edditions NLB supports how many clusters?
A. 16
B. 4
C. 32
D. 8
How many server clusterws are supported in Windows 2003 Enterprise edition?
A. 2
B. 8
c. 0
d. 4
How many server clusters are supported in Windows Server 2003 Datacenter Edition?
A. 8
B. 0
C. 2
D. 4
How many server clusters are suppored in Windows w000 Advanced Server?
A. 4
B. 2
C. 8
D. 0
How many Server clusters are supported in Windows 2000 Datacenter Server
A. 0
B. 8
C. 4
D. 2
What is the maximum number of processors in Windows Server 2003, Standard Edition?
A. 32
B. 8
C. 4
What is the maximum number of processors in Windows Server 2003 Enterprise Edition?
A. 8
B. 32
C. 4
What is the maximum number of processors in Windows Server 2003 Datacenter Edition?
A. 4
B. 16
C. 32
D. 8
What is the maximum number of processors in Windows 2000 Advanced Server?
a. 8
B. 16
C. 4
D. 32
What is the maximum number of processors in Windows 2000 Datacenter Server?
A. 32
B. 4
C. 16
D. 8
What is the Maximum Ram in Windows Server 2003 Standard Edition?
A. 16 GB
B. 8 GB
C. 64 GB
D. 4 GB
What is the maximum ram in Windows Server 2003 Enterprise Edition?
A. 64 GB
B. 4 GB
C. 8 GB
D. 32 GB
What is the Maximum Ram in Windows Server 2003 Datacenter Edition?
A. 32 GB
B. 8 GB
C. 64 GB
D. 4 GB
What is the Maximum Ram in Windows Server 2000 Advanced Server?
A. 8 gb
B. 64 GB
C. 4 GB
D. 32 GB
What is the Maximum Ram in Windows 2000 Datacenter Server?
A. 32 GB
B. 8 GB
C. 4 GB
D. 64 GB
Can servers in a cluster run multiple applications?
yes