Configuring Data Storage
8 important questions on Configuring Data Storage
What are the 2 different partition types and their properties
MBR (Master Boot Record)
- Older type
- Up to 4 partitions per disks
- Up to 2TB size per partition
- Compatible with BIOS and UEFI
GPT (GUID Partition Table)
- Newer type
- Up to 128 partitions per disk
- Up to 256TB per partition (in Windows)
- Compatible with UEFI and x64 operating systems
What are the 5 different volume types and their properties
Simple (Basis)
- Single disk, can be noncontinuous
Mirrored(Dynamic)
- Provides fault tolerance over disks in the volume
Spanned (Dynamic)
- Utilizes the full space of the entire disk before writing data to the next disk
Striped (Dynamic)
- Increases total I/O performance
RAID (Dynamic, server only)
- Redundant array of inexpensive disks
- Provides multiple different configuration options with their own specialization (I/O increase, fault tolerance etc.)
Disk management Powershell commands 1
- get-partition: show all the partitions currently available on the machine.
- get-volume: show all the volumes currently available on the machine.
- new-partition: create a new partition on a specified disk.
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Disk management Powershell commands 2
- clear-disk: Remove all information, data/partitions/volumes/initialization from a disk.
- format-volume: format a partition with a specific filesystem.
- initialize-disk: start initialization on a disk.
- resize-partition: resize a specified partition.
What are the 2 different Virtual Disk Formats
VHD
- Supports up to 2TB size
- Supports older operating systems
VHDX (default)
- Support up to 64TB size
- Windows 8 or newer
- More robust system, can configure the disk to expand dynamically
4 ways to create a Virtual Disk file
- Hyper-V manager : New -> Hard Disk
- Disk Management : Action -> Create VHD
- Diskpart : create vdisk file=<path>
- Powershell : New-VHD-Path <path>
What is Storage Space, 3 properties
Combine different kinds & sizes of physical drives
- ATA, SATA, SAS, USB, SSD
- Not compatible with iSCSI or RAID
Create different kinds of virtual disks
- Simple, mirror, parity
Add additional storage when needed
Difference between Thin and Fixed provisioning
Fixed : The disk has a set size that is not able to change, allocated from the storage pool.
Thin : The disk has the maximum amount of physical storage allocated from the pool, but will only use space when data is actually added.
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