introduction to SAP ERP

 

SAP (System Application Product for Data Processing) is a leading software products suppling company.

 Ø SAP is Developed ERP Software (Enterprise Resource Planning).

Ø In 1972 Four Ex-Employees of IBM Company have started SAP.

Ø They have Developed ABAP module which is Combination of “C++, COBAL”.

Ø SAP Supports 24/7 by 365 Days through “service.sap.com”.

 Ø SAP is OS Independent & also it can Support any OS.

 

 

Example: purpose all the below banks is to take deposits from the bank customer with less interests to the deposited money and provide loans with that money with higher interests. and basically they are banks.

 ICICI BANK

HDFC BANK

DBS BANK

similarly all the below leading company motive to built ERP apps and sell to all Enterprise Resource Planning company.

SAP ERP apps

Oracle ERP apps

Concur ERP apps

 

ERP stands for Enterprise Resource Planning.

ERP is a suite of software applications that an organization uses to integrate and manage its business activities such as finance and accounting, warehouse operations, procurement, project management, risk management and compliance, supply chain processes, transportation, distribution, quality control, along with sales and marketing.

A complete ERP system also includes enterprise performance management and software that assists in planning, budgeting, forecasting, and reporting of business activities and results.

 SAP stands for Systems Applications and Products in Data Processing. SAP ERP is an enterprise resource planning software developed by the German company SAP SE founded in 1972 by Wellenreuther, Hopp, Hector, Plattner, and Tschira.

SAP ERP incorporates the key business functions of an organization.

SAP system consists of a number of fully integrated modules, covering virtually every aspect of business management. SAP is #1 in ERP market and one or more of its modules are implemented by most of the large and medium corporations across the globe.

Due to its reach and widespread implementation, SAP technology/applications provide huge career prospects across organizations. As SAP consultant, you can earn upwards of $75,000 per annum.

 

 

 

 

• ERP software is considered to be a type of enterprise application, that is software designed to be used by larger businesses and often requires dedicated teams to customize and analyse the data and to handle upgrades and deployment. In contrast, Small business ERP applications are lightweight business management software solutions, often customized for a specific business industry.

 

• The central feature of all ERP systems is a shared database that supports multiple functions used by different business units. In practice, this means that employees in different divisions—for example, accounting and sales—can rely on the same information for their specific needs.

EX: Book à Database.

 

Good references:

https://youtu.be/lYCEQqSM08I

EC2 Reserved instances in AWS

 Amazon EC2 Reserved instances(RI)  provides a significant discount( up to 75%) compared to On-Demand pricing and provide a capacity reservation when used in a specific Availability Zone.

discount when you use an EC2 for a long continue use.

You have the flexibility to change families, OS types, and tenancies while benefitting from RI pricing when you use convertible reserve instance (up to 54% discount)

Scheduled RI: reserve  during specific launch periods. For example if you are able to predit demand during the day this is a great option.

Summary: you know you'll need an EC2 instance for a year you should consider using reserved instances.

 

Payment option: You can choose between three payment options:                                                             
1. All upfront:  You pay for the entire Reserved Instance term (one or three years) with one upfront payment and get the best effective hourly price when compared to On-Demand.                                                                                                

2. partial upfront: you pay little bit and rest is installments.                                                               

3. No Upfront: all monthly installments which makes little expensive.                                          

you choose the partial or No Upfront payment option, the remaining balance will be due in monthly increments over the term.

Hands on:                                                                                                                                                                         

Step1: create an EC2 instance in a standard on -demand process.  (ex: suppose T2 instance here)                                                            

 Step2: Purchase a reserved instance. that matches the EC2 instance create in the step1. (T2 instance here too).

                                                                            

*Automatically the billing for the T2 type instance will goes to reserved instance.     

step3: in case of additional changes in the step1. suppose from T2 type instance to C4 type instance.

Step 4: launch the C4 type instance for reserve instance.                                                                         

*Automatically the billing for the C4 type instance will goes to reserved instance.     

Navigate to instance --> Reserved instances as shown below.                                                                                       

Click on purchase reserve instances.                                                                                                         

Choose your platform                                                                                                                                    

Tenancy :                                                                                                                                               

Default option:    for sharing with other people. when you are not using the reserved instance host.

Dedicated: only for you.                                                                                                                       

Offering Class : As per above table in this post.                                                                                            

Provide instance type and duration for the reserved instance info.                                                                             

Choose your payment option.                                                                                                                                   

Click on search.

Add the desired quantity, suppose you need same C4 type instance - 4 no. you can provide you entry as 4 here.

Click on Add to cart.

Finally click on view cart and pay the price.

attach mount point to EBS volume using script

 #!/bin/bash

#attach the EBS drive from the console to /dev/sdf

#list the volumes

lslbk

#check if the volume has any data

sudo file -s /dev/xvdf

#format the volume as ext4

sudo mkfs -t ext4 /dev/xvdf

#create a directory

sudo mkdir /myexternalvolume

#mount our EBS to our directory

sudo mount /dev/xvdf  /myexternalvolume

output for the above script:

# with the above process the mount point will save temporarily, To save new mount point changes permanently. edit fstab file.

sudo nano /etc/fstab

 manually activity:

/dev/xvdf    /myexternalvolume  ext4 defaults,nofail    0   0 

press ESC 
:wq!

cat /etc/fstab --> check our new entry.

Attach new EBS volume to EC2 instance

This post will help you to attach a newly crated EBS to volume to particular EC2 instance.

Note: EBS volumes can attach to EC2 only, if both EC2 and newly created EBS volumes are in same Availability  Zone(AZ).

Here are the practical steps:

From the EC2 console page --> Navigate to Elastic Block Storage --> volumes.

select the newly created EBS volume --> Right click on it --> choose with Attach volume option(as shown below).

Provide instance id (which will obtain in EC2 launch page, instance id id EC2 instance specific).

Device : /dev/sdf or /dev/sdp, based on previously available volume.                                            

Click on Attach.                                                                                                                               

                                Thats all the volume is attached to EC2 instance now.                           

Creating new EBS volume

 This post will help you to  create new EBS volumes in AWS.

Practical steps:

From the EC2 launch page navigate to volumes.                                                                                                      

Click on create volumes

Provide details:

1.from the volume type dropdown, select the required volume type.

2.provide size of the volume in GB

 

    based on the size the volume, the iops value will changes.

    suppose for 2GB - min/max iops is 100/3000

    if size of volume is 200GB, then min/max value will be 600/45000

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if the requirement is to create a EBS volume to attach to one specific EC2 instance.

check the Availability zone information here. from running EC2 instance page.

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Enable encryption if really required.

tags are optional.

click on Create volume 

Volume created successfully.