Physical Server Running. If capacity is available, it can allocate new Virtual server. So same physical server is used for multiple customers and VMs.
When the customer has requirement to not share VMS with someone else's. No sharing of physical server. The physical server box would be dedicated for me in that case.
On Demand:
When you are not sure how long you are going to use on demand instances. It is most flexible but most expensive as well.
Reserved: 1 year or 3 years. When there is a long term commitment, 75% discount is given
Spot: Amazon provides from spare capacity. Most effective way to save cost.
Dedicated: No one else is able to use.
Storage:
Volume types: Magnetic : Slow and cheaper. Very slow and not a good idea for bootable disk. Can be used for logs and other thing for less frequently used.
SSD : Faster and expensive
Provisioned IOPS SSD: specific IOPS going to be consumed. The best option to go with a bit costly.
IOPS: Input output per second. Reads /Writes per second
IOPS 100/3000 : guaranteed for 100 but can support up to 3000
Snapshot:
Predefined instance m/c : It does not install from scratch, it's pre-installed operating system it would be very very quick.
Disk can be added later on as well. Not necessarily at the time of instance creation.
Tags are used for identification of server.Max 50 can be set, the more the better.
Snapshot is OS image.
EBS: Elastic block store
Suse based suited for SAP based application.
When the customer has requirement to not share VMS with someone else's. No sharing of physical server. The physical server box would be dedicated for me in that case.
On Demand:
When you are not sure how long you are going to use on demand instances. It is most flexible but most expensive as well.
Reserved: 1 year or 3 years. When there is a long term commitment, 75% discount is given
Spot: Amazon provides from spare capacity. Most effective way to save cost.
Dedicated: No one else is able to use.
Storage:
Volume types: Magnetic : Slow and cheaper. Very slow and not a good idea for bootable disk. Can be used for logs and other thing for less frequently used.
SSD : Faster and expensive
Provisioned IOPS SSD: specific IOPS going to be consumed. The best option to go with a bit costly.
IOPS: Input output per second. Reads /Writes per second
IOPS 100/3000 : guaranteed for 100 but can support up to 3000
Snapshot:
Predefined instance m/c : It does not install from scratch, it's pre-installed operating system it would be very very quick.
Disk can be added later on as well. Not necessarily at the time of instance creation.
Tags are used for identification of server.Max 50 can be set, the more the better.
Snapshot is OS image.
EBS: Elastic block store
Suse based suited for SAP based application.
No comments:
Post a Comment