Virtualization - creation of virtual version of an operating system, server, storage devices or network
resources
-A lot more cost effective than On-prem solutions
-IT simplification
-Increased utilization of available resources
What are the Layers of hardware (bottom to top not virtualized) - application
Operating system
Server
What are the Layers of hardware (bottom to top that is virtualized) - application
Operating system
Hypervisor
Server
Hypervisor - Software that enables a single computer to run multiple operating systems simultaneously
and enables virtualization.
examples of companies who provide Hypervisors - VM Ware
Hyper V
Nutanix
Red Hat
Oracle
What are some of the benefits of virtualization - The BIG goal is resource virtualization
Dynamic
Shared Capacity
, One to Many relationship
What are some benefits of keeping a physical server - Security purposes
Unable to virtualize
Compliance/ regulatory: Healthcare or Financial
Mission critical data
RTO - Recovery Time Objective. An RTO identifies the maximum amount of time it can take to restore a
system after an outage.
RPO - Recovery Point Objective. A Recovery Point Objective identifies a point in time where data loss is
acceptable. How much data can a company afford to lose?
3,2,1 rule and what Veeam adds to the rule - 3 different copies of the data
2 different media platforms
1 offsite copy
1 of which is offline: No one can touch air-gapped or immutable unless the person has the right
credentials
0 errors after automated backup testing and recoverability verification
Replication - exact copy in a usable format that is off-site that uses the same amount of resources.
Companies should replicate their most important documents so if they were to lose it, they could get
that data back instantly
Is also the most expensive
Backup - another copy of data except not in a usable form
-uses a lot more storage. Think flash drives, tape ect.
-Is cheaper than replication
rehydrating - Process to make backed up data in a useable form.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller VasilyKichigin. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.48. You're not tied to anything after your purchase.
