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Architecture and Design (may include a few agent questions for NPM/SAM test)
Terms in this set (26)
12k Elements/APE, 400,000 Elements/Instance, 100 APEs/Instance
Stacked Pollers - ____ per server for NPM, ___ can be used by SAM
4 stacked pollers per server, SAM can use up to 2.
NTA Limits - ____ FPS/Poller, ____ FPS/instance
Up to 50k FPS on one poller, up to 300k on an instance
NPM/Orion Limits - ___ Agents/Poller
1000 agents per Poller
NPM/NetPath Limits - ____ Paths per poller, ____ paths per probe
100 paths per Poller, 10-20 per probe
NCM Limits - ___ Nodes/Poller, ___ Nodes/Instance
10,000 Nodes/Poller, 30,000 Nodes/instance
SAM Limits -
8000-10,000 per Poller depending on complexity, up to 150,000 per instance
VMAN Limits - ___ VMs per Poller/Federated Collector
3000 per Poller/Federated Collector
IPAM Limits -
___ IPs per Poller,
___ IPs per instance
1 million IPs/Poller, 3 million IPs/Instance
SRM Limits - ___ ____s per Poller,
___ ____s per instance
40K LUNs per Poller, 160K LUNs per Instance
VNQM Limits -
___Calls/Day/Instance, ___ Calls/Day/Poller
____ IPSLA Ops/Poller, ___ IPSLA Ops/Instance
200k calls per day per instance AND per poller
5000 IPSLA Ops/Poller, 15,000/instance
UDT Limits - ___ ports/Poller, ___ ports/Instance
100,000 ports/Poller, 500,000 ports/instance
EOC Limits - ____instances per EOC, ____ Elements per EOC
30 instances per EOC with up to 1 million Elements between them
At what latency between servers would you consider using EOC in a Distributed model instead of a single Instance for performance concerns?
What port is used by the SWIS to communicate between Web server(s) and Poller(s)?
What port is used by Agents with agent-initiated communication? Windows 2008R2 servers?
TCP 17778 for all,
except TCP 17791 for Windows 2008R2 servers
What port is used by Agents with server-initiated communication?
What port is used by SQL by default?
What is the Business Layer Host service used for? What is its other name?
The Orion Module Engine service loads all modules and their plugins one at a time and no polling can occur if it is not running. The Information Service must also be running for plugins to start.
Where do the Job Scheduler and Job Engine services live, and what are they used for?
Job Scheduler - main poller only - tells Job Engine to go poll something.
Job Engine - all pollers. Has Worker processes. Writes info about each job to its DB. The Workers check that db file to find out what they are supposed to do and work accordingly. That DB can get corrupted, and can be cleared out.
Describe the 3 types of Orion deployments (Centralized and two types of Distributed)
Centralized - One main server/instance with APEs that call back to one central DB
Locally Distributed - one Orion server with APEs in multiple regions
Distributed - Separate instances that (optionally) are fed back to one EOC instance
What happens to polling when a Polling Engine is above 100% utilization? What can be done to fix the issue?
Polling Engine will automatically increase polling intervals to poll less frequently.
To fix, add an APE, remove unneeded elements, or increase polling frequencies on less important elements.
What port is used by RabbitMQ?
What port is used by MSMQ?
What are the two types of Additional Web Server deployments and when are they used?
Local - installed near the Primary Web server for number of concurrent users
Remote - used for regional/geographic purposes or for DMZ/port-closed type environments
What happens when a Poller loses connectivity to the database?
It will store data up to 1GB and 1 hour, discarding oldest data when these limits are met to make room for new data, and will write what data it has when the connection is restored.
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