Storage Management
What is storage management?
The purpose of storage management is to help organizations find a balance between costs, performance and storage capacity. In addition, storage management also aims to protect essential data and increase its availability throughout an organization.
Why we need storage management?
Every company should have a storage management plan. As your business prospers, new customers are added, old customers return, new applications are purchased, networks grow — the need for a storage management plan becomes essential. Adding new storage is not a simple task. New data and new applications need to be integrated with old ones. Merging data may not be practical. The best course of action is to plan ahead, beginning with considering using a data center and cloud services for your storage needs.
It have 2 ways available:
- Standard / Physical Management.
- LVM (Logical volume manager) / Virtual Management.
You can see the above image, Here we have a one physical server.
- It have 2 Hard drives with 1000 GB each. We can use up to the 6 Hard Drives in a single Physical server. If we need more Hard Drives then we need to take another Physical Server.
- While you are attaching a Hard Drive to Physical Server then we need to do a format of Hard Drive by using the Linux File System. Other wise we will get a bugs in the Physical server. Hard Disk storage is available in the structure as shown in image and it have a blocks to store the storage of hard drive.
- We have a 1000 GB storage Hard Drives available in the Physical server. Now Application 1 is running on EXT1. and application 2 is running on Ext2 and application 3 is running on XFS.
- Now here my applications will need more space, then we cant change the hard disk sizes in the physical server. If we are using the cloud then we can change.
- Now we have a 1000 GB size Hard Disks, but my application will consuming the 200 GB space, then 800 GB space is waste from the Hard Disks. In this case, We are creating the Partitions.
- To extend the more space, Delete the first partition , backup in other hard drive and we will assign the new partition to App1, App 2 and App3.
Logical Volume manager / Virtual Management:
Now we need to create a 100 GB with 100 LV hard disks, but it’s not possible, because we have only 1000 GB in LV.
Then we can create a another 1000 GB in server and add to PV 1000 GB. Now we can add 4 hard disks in Server. so advanced level is storage racks.
