EBS Flashcards

1
Q

What is EBS?

A

Elastic Block Storage.
These are virtual disks/volumes that are placed in a specific to an availability zone but are replicated to protect from single points of failure.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What can you do with them?

A

1) Create storage volumes & attach to EC2 instances.
2) You can create file systems on top of them.
3) Run a database or anything you want on block storage.
4) You can install applications on them.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the EBS root volume?

A

The volume which the operating system is installed on them. Root (Linux) or C Drive (Windows).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Volume Types?

A
  1. General Purpose (SSD) GP2.
  2. Provisioned IOPS (SSD) IO1.
  3. Throughput Optimised HDD (ST1)
  4. Cold HDD (SC1)
  5. Magentic (Standard)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Characteristics of General Purpose SSD ?

A

1) General purpose.
2) A balance of price and performance.
3) Ratio of 3 IOPS per GB with up to 10,000 IOPS.
4) Burst up to 3,000 IOPS (for extended periods of time)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Characteristics of Provisioned IOPS SSD?

A

1) For high-performance applications.
2) If you need more than 10,000 IOPS
3) Can provision up to 20,000 IOPS per volume.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Characteristics of Throughput optimised HDD (ST1)?

A

1) Big Data
2) Data warehouses
3) Log processing
4) cannot be a boot volume.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Characteristics of Cold HDD (SC1)?

A

1) Lowest costs storage
2) Designed for infrequently accessed workloads.
3) File Server
4) cannot be a boot volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Characteristics of Magnetic (Standard)?

A

1) Lowest cost per gigabyte of all EBS volumes that is bootable.
2) Magnetic volumes are ideal for workloads where is accessed infrequently.
3) Applications where the lowest storage is important.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Can you migrate EBS volumes?

A

Yes.

1) Take a snapshot
2) select volume type (you can change (except for standard))
3) Select the new availability zone.
4) Copy it to your new region.
5) create an AMI image.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly