What is the boot time for an instance store backed instance?

Storage for the root device

Characteristic Amazon EBS-backed AMI Amazon instance store-backed AMI
Boot time for an instance Usually less than 1 minute Usually less than 5 minutes
Size limit for a root device 64 TiB** 10 GiB
Root device volume EBS volume Instance store volume

How long does it take to reboot instance AWS?

In most cases, it takes only a few minutes to reboot your instance. When you reboot an instance, it keeps its public DNS name (IPv4), private and public IPv4 address, IPv6 address (if applicable), and any data on its instance store volumes.

What is instance store backed instance?

An Instance store backed instance is an EC2 instance using an Instance store as root device volume created from a template stored in S3. Instance store volumes access storage from disks that are physically attached to the host computer.

What is the lifetime of an instance store?

Instance store lifetime

The data in an instance store persists only during the lifetime of its associated instance. If an instance reboots (intentionally or unintentionally), data in the instance store persists.

What is one difference between an Amazon EBS backed and an instance store backed instance?

EBS volume is network attached drive which results in slow performance but data is persistent meaning even if you reboot the instance data will be there. Instance store instance store provides temporary block-level storage for your instance.

What is an EBS backed instance?

An “EBS-backed” instance is an EC2 instance which uses an EBS volume as it’s root device. EBS volumes are redundant, “virtual” drives, which are not tied to any particular hardware, however they are restricted to a particular EC2 availability zone.

What is difference between restart and reboot?

When you select the restart option in your PC, it means you are asking your operating system to restart all the applications which are running on it, while the reboot means when you press the Button which is forcefully restarting the operating system.

What happens if you reboot an instance store backed ec2 instance with a public IP?

Yes, the instance store will still be there after reboot, intact. Also, yes, the IP address stays the same.

How long does it take to reboot RDS?

In my experience a 500Gb DB will usually be restored in about 20-25 minutes.

Is instance store faster than EBS?

Conclusions: Instance-store is over 5x faster than EBS-SSD for uncached reads. Instance-store and EBS-SSD are equalivent for cached reads. Instance-store is over 10x faster than EBS-SSD for writes.

Can instance store be used as boot volume?

What Amazon calls the ‘local instance store’ can be used for boot volume. This disk space is ephemeral (lost when machine shuts down) but most EC2 instances can be launched with an operating system image using this local instance store.

What is the difference between EFS and EBS?

The data stored in EBS remains in the same availability zone and multiple replicas are created within the same availability zone whereas in EFS the data stored remains in the same region and multiple replicas are created within the same region.

Is EFS slower than EBS?

EBS and EFS are both faster than Amazon S3, with high IOPS and lower latency. EBS is scalable up or down with a single API call. Since EBS is cheaper than EFS, you can use it for database backups and other low-latency interactive applications that require consistent, predictable performance.

Is EBS a SAN or NAS?

EBS is on a SAN. Its not a NAS. Its on a Storage Array that gives you a higher throughput, and practically should be within the primary physical infra where your instance is running.

What is difference between EFS and NFS?

Elastic File Service: The AWS NFS Solution

While Amazon S3 also offers shared storage, EFS provides higher performance and a file-system based model that doesn’t require changes to existing applications. An application can access files on EFS just like it would do in an on-premise environment. S3 does not support NFS.

What are Iops in AWS?

IOPS. IOPS are a unit of measure representing input/output operations per second. The operations are measured in KiB, and the underlying drive technology determines the maximum amount of data that a volume type counts as a single I/O.

Which is better SMB or NFS?

In random read, NFS and SMB fare equally with plain text. However, NFS is better with encryption. In the case of random writing, NFS is better than SMB in both plain text and encryption. If you use rsync for file transfer, NFS is a better choice in plain text and encryption.

Is EFS a storage service?

Amazon EFS is a file storage service for use with Amazon compute (EC2, containers, serverless) and on-premises servers. EFS provides a file system interface, file system access semantics (such as strong consistency and file locking), and concurrently accessible storage for up to thousands of EC2 instances.

Does EFS have a size limit?

Maximum size of a single file: 52,673,613,135,872 bytes (47.9 TiB). Maximum directory depth: 1,000 levels deep. Any one particular file can have up to 512 locks across all instances connected and users accessing the file. Amazon EFS file system policies have a 20,000 character limit.

How do I backup my EFS?

On the Create on-demand backup page, choose the Resource type that you want to back up; for example, choose EFS for Amazon EFS.

  1. Choose the File system ID of the EFS resource that you want to protect.
  2. In the Backup window section, select Create backup now.