What is SDA and XVDA?
The /dev/sda device is provided for support of legacy devices and installations that don't understand Xen native virtual disks. The /dev/xvda1 device is the native device and the one you should use.
What is the difference between XVDA and sda1?
Based on the AWS Docs, the following apply: "/dev/sda1" is reserved for ROOT Volume on both Windows and Linux. "xvd*" is recommended for EBS and Instance Store in Windows. "/dev/sd*" is recommended for EBS and Instance Store in Linux.
What is Dev xda1?
/dev/xvda1 is your disk based storage on the amazon storage system. It is the only storage on your system have, and it contains your operation system and all data. So I guess most of the space it used by the Ubuntu installation. Remember: T instances at amazon don't have any local disk at all.
What is Dev XVDB?
/dev/xvdb is a disk device, and /dev/xvdb1 is first partition on a xvdb device.
What are the types of root device in AWS?
An AMI can have either of two root device types: Amazon EBS-backed AMI (uses permanent block storage to store data) Instance store-backed AMI (which uses ephemeral block storage to store data)
What is root block device in AWS?
When you launch an instance, the root device volume contains the image used to boot the instance. When we introduced Amazon EC2, all AMIs were backed by Amazon EC2 instance store, which means the root device for an instance launched from the AMI is an instance store volume created from a template stored in Amazon S3.
Can I delete Dev vda1?
You can delete all files of kernels you do not need any more.
What is Dev SDA?
dev/sda - The first SCSI disk SCSI ID address-wise. dev/sdb - The second SCSI disk address-wise and so on. dev/scd0 or /dev/sr0 - The first SCSI CD-ROM. dev/hda - The primary disk on IDE primary controller. dev/hdb - The secondary disk on IDE primary controller.
What is Dev nvme0n1p2?
Your sudo fdisk -l output indicates /dev/nvme0n1p2 is an extended partition in classic DOS MBR-style partitioning. An extended partition can only contain logical partitions, not files as such. And in your case, it only contains /dev/nvme0n1p5 , which is a swap partition, containing no filesystem and so no files.
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.
What is Dev nvme1n1?
The device names are /dev/nvme0n1 , /dev/nvme1n1 , and so on. The device names that you specify in a block device mapping are renamed using NVMe device names ( /dev/nvme[0-26]n1 ). The block device driver can assign NVMe device names in a different order than you specified for the volumes in the block device mapping.
What is XVDF?
xvdf is nothing but another extension for drives (i.e., the f in xvdf means nothing).
Root device storage concepts
You can launch an instance from either an instance store-backed AMI or an Amazon EBS-backed AMI. The description of an AMI includes which type of AMI it is; you'll see the root device referred to in some places as either ebs (for Amazon EBS-backed) or instance store (for instance store-backed).
Choose an AMI by root device type
The AMI that you specify when you launch your instance determines the type of root device volume that your instance has. You can view AMIs by root device type using one of the following methods.
Change the root volume to persist
By default, the root volume for an AMI backed by Amazon EBS is deleted when the instance terminates. You can change the default behavior to ensure that the volume persists after the instance terminates. To change the default behavior, set the DeleteOnTermination attribute to false using a block device mapping.
Change the initial size of the root volume
By default, the size of the root volume is determined by the size of the snapshot. You can increase the initial size of the root volume using the block device mapping of the instance as follows.
What is XVD on a Xen?
You are on a Xen VPS(or virtual machine); xvd* are simply the Xen disk storage devices (Xen Virtual block Device). They appear instead of sda, etc. when you are using the more efficient paravirtualized Xen disk drivers instead of straight-up SCSI disk emulation. If you list the installed modules (drivers) on a Xen HVM, this driver will show as blkfront (or xen_blk if you are running on a very old Xen version--pretty rare).
What is Xen project?
Xen refers to the Xen Project, defined on Wikipedia as: Xen (pronounced /ˈzɛn/) is a type-1 hypervisor, providing services that allow multiple computer operating systems to execute on the same computer hardware concurrently. xvdf is nothing but another extension for drives (i.e., the f in xvdf means nothing). Share. Improve this answer.
What is Xen BLKfront?
The "xen-blkfront" driver, which allows the virtual machines to access the underlying block devices, traditionally mapped sda, sdb... to xvda, xvdb..., [...] & what xvdf stands for i am not sure.
