Cheatography
https://cheatography.com
Relevant information regarding Backup Technology.
This is a draft cheat sheet. It is a work in progress and is not finished yet.
Disks
MBR |
GPT |
Master Boot Record |
Protective Master Boot Record |
64 byte Partition Table |
Backup GUID Partition Entry Array |
2 byte stop code |
Backup GUID Partition Table Header |
Max 4 Primary Partitions |
Max 128 Primary Partitions |
Max Disk Size 2TB (1024^4) |
Max Disk Size 9,4 ZiB (1024^7) |
Volume Types
- |
Performance |
Security |
Simple |
Normal |
none |
Spanned |
Normal |
none |
Striped |
Faster Read/Write I/O |
none |
Mirrored |
Faster Read I/O |
Good |
Basic or Dynamic Disk?
Default disktype is basic.
Basic can be converted to Dynamic with no data loss.
Dynamic to basic conversion will lose ALL data
Local Disk Manager (LDM) Database replicated among disks with Dynamic disks. |
Backup
Backup Full |
Creates a full Backup and is time consuming. |
Backup
Incremental |
Creates a backup of everything with Archivebit. Every incremental backup has to be restored in order. Quick at making backups. |
Backup
Differential |
Creates a backup of everything with archivebit. Quick at restoring. Usually created daily and is abit slower than incremental. |
Backup
Copy |
Copies everything. It is like a snapshot. |
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Filesystems
- |
Max File Size |
Max Volume Size |
VSS? |
FAT |
4 GiB |
4 GiB |
No |
FAT32 |
4 GiB |
16 TiB |
No |
NTFS |
16 EiB |
64KB * 2^64 |
Yes |
ReFS |
16 EiB |
1 YiB |
Yes |
Filesystems
FAT |
File Allocation Table and is a filesystem like NTFS, though it's older. |
FAT32 |
Is also a File Allocation Table, but a 32-bit version. |
NTFS |
New Technology File System, and supports: file encryption etc. It is the most common filesytem. |
ReFS |
Resilient File System and is Microsoft newest filesystem. ReFS includes security and control of corrupt files. |
DiskMgmt |
Diskpart's GUI "Twin" |
Diskpart |
Is a CMD-Utility to create Partitions, create/delete/alter volumes |
Quota og FSRM
FSRM |
File Server Resource Manager |
File
Screening |
Filter for allowed files, and is able to exclude file types.
(ex. .Exe files) |
Quota |
Puts a quota on users or volumes. Only works on NTFS |
Soft Quota |
Tracks storage and warns when the quota limit is breached. |
Hard Quota |
Tracks Storage and denies data after limit has been hit. |
Template |
Quota Group Policies |
Partition Types
Primary |
Contains 1 file system. |
Extended |
Can be divided into multiple logical partitions (Limited to Drive Letters A-Z) |
Logical |
Also contains 1 file systems. |
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RAID
- |
Storage |
Error(s) |
Speed |
RAID0 |
100% |
none |
2xR 2xW |
RAID1 |
50% |
1 disk |
2xR 1xW |
RAID5 |
66% |
1 disk |
2xR 1xW |
RAID10 |
50% |
1 disk |
4xR 2xW |
VSS (Volume Shadow copy Service)
VSS operates in the Block Level of Volumes.
One of the features of Shadow Copy is that it allows the administrator to take backup of files and programs that are currently being used. |
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