Azure Disks (managed disks)

• azure managed disks are used to attach virtual machine
• to create disk we need azure storage account
• can mount more than one disk
• linux mount disk (/dev/*), Windows (C drive os and other dirver data storage D, E, F )

disk role in vm

• os disk ==> which will contain operation and system and its application data
• data disk : app data, database data, application data
• temporay disk: non host data and use temporay storage in vm

types of disks

1. Ultra disk:

• not used for OS
• max iops will be 4,00,000 (read/wirte operations per second)
• Thoughout puts max will be 10,000 mb/s
• latency will be sub-ms ( faster disk in azure)
• used for databases and heavy workloads
• cost very high

2. Premium SSD v2

• not used for OS
• max iops will be 80,000 (read/wirte operations per second)
• Thoughout puts max will be 1200 mb/s
• latency will be sub-ms
• used for production for application data, best workloads
• cost will high

3. Premium SSD

• used for OS + data disk also will suppourt
• max iops will be 20,000 (read/wirte operations per second)
• Thoughout puts max will be 900 mb/s
• latency will be low-ms
• used for production vm os
• cost will effective best for performance

4. Standard SSD:

• general purpose
• used for os disk
• max iops will be 6,000 (read/wirte operations per second)
• Thoughout puts max will be 750 mb/s
• latency will be ms
• used for other then production
• cost will low
• web server, small web application …etc

5. Standard HDD:

• used for os disk
• max iops will be 2,000 (read/wirte operations per second)
• Thoughout puts max will be 500 mb/s
• latency will be ms
• used for backup and non-frequently access files, archeived files
• cost will very low

LRS and ZRS

• LRS will store back in same avaliablity zone and cost low
• ZRS will store backup in multiple AZ and cost will be high

attach disk to linux vm

attach disk to windows server

• steps to mount disk

login to vm by ssh 

sudo parted /dev/nvme0n3 --script mklabel gpt mkpart xfspart xfs 0% 100%
sudo mkfs.xfs /dev/nvme0n3p1
sudo partprobe /dev/nvme0n3p1


sudo mkdir /datadrive
sudo mount /dev/nvme0n3p1 /datadrive

sudo blkid # give UUID
## fstab 
/dev/nvme0n3p1: UUID="9d789acc-b140-4163-8f6e-41a319c42ae6" BLOCK_SIZE="4096" TYPE="xfs" PARTLABEL="xfspart" PARTUUID="997f4fa6-769f-4da3-8dbc-d62a4f92b91a"
UUID=9d789acc-b140-4163-8f6e-41a319c42ae6   /datadrive   xfs   defaults,nofail   1   2

add above line /etc/fstab

Task

• follow same steps and create disk and vm and attach disk to linux vm
• Try above windows referance to attach disk to windows vm.