Synology DS214+ User's Guide Page 33
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Synology NAS User's Guide
Based on DSM 5.2
33 Chapter 6: Manage Storage Space with RAID Groups
Change RAID Types
The RAID types of existing RAID Groups can be changed without losing existing data, allowing you to easily and
economically manage storage capacity. To change the RAID type of a RAID Group, there must be available hard
disks installed in the Synology NAS. The table below displays supported types of RAID change. For more
detailed instructions regarding how to change RAID types, please refer to DSM Help.
RAID Type
Can be changed to…
Basic
RAID 1 or RAID 5
RAID 1
RAID 5
RAID 5
RAID 6
RAID 1
Add mirror disk
Repair RAID Groups
When one of the hard disks belonging to a RAID Group fails, the RAID Group status will change
to Degraded. You can replace failed hard disks and repair the RAID Group, as long as the RAID Group is one of
the following RAID types: RAID 1, RAID 5, RAID 6, and RAID10.
For detailed instructions regarding how to repair RAID Groups, please refer to DSM Help.
Expand RAID Groups
The storage capacity of RAID Groups can be gradually expanded by installing more or larger hard disks. This
feature allows you to expand the capacity of your RAID Group according to your budget and with no need to
worry about losing any existing data.
The sections below provide basic information regarding expanding RAID Groups. For more detailed instructions,
please see DSM Help.
Expand RAID Groups by Installing Larger Hard Disks
You can expand the storage capacity of RAID Groups by replacing existing hard disks with larger ones. This
feature is available for following RAID 1, RAID 5, and RAID 6. Associated volumes or iSCSI LUN on RAID Group
for single volume or iSCSI LUN will be expanded automatically.
Expand RAID Groups by Installing Additional Hard Disks
You can expand the storage capacity of RAID Groups by installing and adding additional hard disks. This feature
is available for JBOD, RAID 5, and RAID 6.
For RAID Groups with total capacity less than 64TB, the system expands capacity automatically. For RAID
Groups with total capacity higher than 64TB, please click Manage > Expand to expand the capacity of your
RAID Group.
Data Scrubbing
Data scrubbing is a data maintenance function that inspects RAID Groups and repairs any detected data
inconsistencies. This function can be used with RAID Groups that implement RAID 5 or RAID 6.We recommend
regularly performing data scrubbing in order to maintain data consistency and avoid losing any critical data in the
event of disk failure.
For detailed instructions regarding how to perform data scrubbing, please refer to DSM Help.
- Based on DSM 5.2 1
- Table of Contents 2
- 3 Table of Contents 3
- 4 Table of Contents 4
- Introduction 5
- 6 Chapter 1: Introduction 6
- Online Resources 6
- Manager 7
- DiskStation Manager Desktop 8
- Widgets 9
- Based on DSM 5.2 10
- Modify System Settings 13
- Change Network Settings 14
- Join Wireless Network 14
- Modify Regional Options 15
- Use Energy Saving Features 16
- Check System Information 17
- View System Logs 18
- Monitor System Resources 19
- Analyze System Usage 19
- Scan System Settings 20
- Automate Tasks 21
- Receive Event Notifications 22
- Reset Admin Password 22
- Reinstall Synology NAS 23
- Enable SNMP Service 23
- Enable Terminal Services 23
- Manage Storage Space 24
- Quick or Custom Volumes 25
- RAID Types 25
- Change RAID Type 26
- Hard Disk Requirements 27
- Data Scrubbing 28
- SSD TRIM 28
- Manage Hard Disks 29
- SSD Cache 30
- Hot Spare 30
- Manage External Disks 30
- Manage RAID Groups 31
- RAID Group Types 32
- Change RAID Types 33
- Repair RAID Groups 33
- Expand RAID Groups 33
- Manage Volumes 34
- Repair Degraded Volumes 34
- Manage iSCSI LUNs 35
- Manage iSCSI Targets 35
- Storage Overview 36
- Internet 37
- Set up Router 38
- Add Port Forwarding Rules 38
- DSM Help 39
- Set Up VPN Connection 40
- Enhance Internet Security 41
- Set Up File Sharing 43
- Joining a Windows Domain 44
- Binding to an LDAP Server 44
- Manage Users and Groups 46
- Create Groups 47
- Set Up Shared Folders 48
- Create a Shared Folder 49
- Remove a Shared Folder 49
- Encrypt a Shared Folder 49
- Index Shared Folder Contents 50
- Access Files from Anywhere 51
- Access Files via FTP 53
- Access Files via WebDAV 54
- Sync Files via Cloud Station 54
- File Station Appearance 55
- Manage File Station Options 55
- Search for Files or Folders 56
- Set File Station in Action 56
- Share File Links 56
- Edit Music Information 57
- Edit Photos 57
- Back Up Data 58
- 59
- Enable Web Station 60
- Modify HTTP Service Options 61
- Manage PHP Settings 61
- Package Center 62
- Install or Buy Packages 63
- DS audio 64
- DS cloud 64
- DS download 64
- DS file 64
- Use Other Mobile Devices 65
- Troubleshooting 66
- SYNOLOGY, INC 67
- END USER LICENSE AGREEMENT 67
- LIMITED PRODUCT WARRANTY 69
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