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Synology NAS User's Guide
Based on DSM 4.3
27 Chapter 4: Manage Storage Space
Clone iSCSI LUNs
LUN Clone
1
Go to Main Menu > Storage Manager and click the Clone button to make a writable copy of an iSCSI LUN or an
iSCSI LUN snapshot
allows you to create near-instantaneous virtual copies of a LUN. It means much higher productivity
and less complex deployment during system-wide operations. LUN Clone also consumes only a fraction of
storage at the time of creation.
Take iSCSI LUN Snapshots
LUN Snapshot
1
allows you to create up to 256 snapshots per LUN using point-in-time technology without having
any impact to system performance. It is efficient for your valuable storage space and also increases the level of
protection, letting you easily recover valuable data.
Go to Main Menu > Storage Manager and click the Snapshot button to take iSCSI LUN snapshots.
Manage Hard Disks
The HDD Management tab allows you to monitor the status of the hard disks installed in your Synology NAS,
providing options to manage and analyze hard disk performance and health. To see this tab, go to Main Menu >
Storage Manager and click HDD Management. For more detailed instructions, please see DSM Help.
Enabling Write Cache Support
Enabling write cache support enhances the performance of your Synology NAS. Only certain hard disk models
support this feature. To ensure data protection while using write cache support, usage of a UPS device is
strongly recommended. We also suggest the system be shut down properly every time after use. Disabling write
cache will reduce the chances of data loss caused by abnormal power outages, but system performance will
decline.
Running S.M.A.R.T. Tests
Disk S.M.A.R.T. tests examine and report the status of your hard disk, alerting you to possible disk failures. We
recommended promptly changing your disk if any errors are detected. S.M.A.R.T. tests can also be scheduled to
run automatically by creating tasks.
Checking Disk Info
The Disk Info section displays a hard disk's model name, serial number, firmware version, and total size.
SSD Cache
SSD cache
2
Please refer to your Synology server Quick Installation Guide for information regarding SSD installation. For more
detailed information regarding SSD management, please see DSM Help or
drives can be installed and mounted in a RAID 0 configuration to boost the read speed of a volume,
including iSCSI LUN (Regular Files) on a volume, or iSCSI LUN (Block-Level) on your Synology server. You can
mount, check SSD compatibility, and view related information by going to Main Menu > Storage Manager >
SSD Cache.
Synology SSD Cache White Paper.
---------
1
LUN Clone and Snapshot are only available on specific models.
2
SSD cache is supported on specific models only. Visit www.synology.com for more information
- Based on DSM 4.3 1
- Table of Contents 2
- 3 Table of Contents 3
- 4 Table of Contents 4
- 5 Table of Contents 5
- Introduction 6
- 7 Chapter 1: Introduction 7
- Online Resources 7
- Manager 8
- Desktop and Shortcuts 9
- Taskbar 9
- Widgets 10
- Restart and Shutdown 11
- Open Application Windows 11
- Manage Personal Options 12
- Account 13
- Volume Usage 13
- Desktop 13
- Photo Station 13
- Modify System Settings 14
- HTTP Service 15
- Security 15
- Router Port 15
- Certificate 15
- Change Network Settings 16
- Wireless 17
- IPv6 Setup 17
- Modify Regional Options 18
- Use Energy Saving Features 19
- Power Schedule 20
- HDD Hibernation 20
- Manage Storage Space 21
- Quick or Custom Volumes 22
- RAID Types 22
- Change RAID Type 23
- Hard Disk Requirements 24
- Data Scrubbing 25
- SSD TRIM 25
- Manage iSCSI Targets 26
- Manage iSCSI LUNs 26
- Manage Hard Disks 27
- SSD Cache 27
- Hot Spare 28
- Manage External Disks 28
- Overview 29
- Manage RAID Groups 29
- RAID Group Types 30
- Change RAID Types 31
- Repair RAID Groups 31
- Expand RAID Groups 31
- Manage Volumes 32
- Repair Degraded Volumes 32
- Storage Overview 34
- Internet 36
- Set up Router 37
- Add Port Forwarding Rules 37
- Service Requirement 38
- Based on DSM 4.3 39
- Set up VPN Connection 40
- Enhance Internet Security 41
- 42
- Configure Bandwidth Settings 43
- Set Up File Sharing 45
- Joining a Windows Domain 46
- Binding to an LDAP Server 47
- Manage Users and Groups 48
- Set Up Shared Folders 50
- Create a Shared Folder 51
- Remove a Shared Folder 51
- Encrypt a Shared Folder 52
- Index Shared Folder Contents 53
- Access Files from Anywhere 54
- Access Files via FTP 56
- Access Files via WebDAV 57
- Sync Files via Cloud Station 58
- File Station Appearance 59
- Manage File Station Options 59
- Share File Links 60
- Search for Files or Folders 60
- Set File Station in Action 60
- Edit Music Information 61
- Edit Photos 61
- Back Up Data 62
- Use Time Machine for Mac 63
- Use rsync for Linux 63
- Local Backup 64
- Network Backup 64
- Amazon S3 Backup 64
- More Information 65
- Enable Web Station 68
- Host Mail Server 69
- Before you start 70
- Set up Mail Server 70
- Package Center 72
- Photo Station Features 74
- Perform Face Recognition 75
- Use the Blog 75
- Install Audio Station 76
- Audio Station Features 77
- Choose Output Devices 78
- Programs with Video Station 79
- Before You Start 80
- Video Station Features 80
- Play Videos 81
- Install Download Station 82
- Download Station Features 83
- Set up eMule 84
- Create eMule Download Tasks 85
- Manage eMule Download Tasks 85
- Set up Xunlei-Lixian 85
- Surveillance Station 86
- Create Camera Groups 87
- Migrate Cameras 87
- Export Recordings 87
- Mount Recordings 87
- Watch Live View 88
- Use Other Functions 89
- Work with Timeline 90
- High Availability 91
- System Requirements 92
- Install DNS Server 94
- DNS Server Features 95
- Manage DLNA Media Server 97
- Install iTunes Server 97
- Manage iTunes Server 98
- Check System Information 99
- General 100
- Network 100
- Storage 100
- Service 100
- View System Logs 101
- Monitor System Resources 102
- Automate Tasks 103
- Update DSM 103
- Manage Bluetooth Devices 103
- Receive Event Notifications 104
- Customized Alias 105
- Customized HTTP(S) Ports 105
- Reset Admin Password 106
- Reinstall Synology NAS 107
- Enable SNMP Service 107
- Enable Terminal Services 107
- DS audio 108
- DS cloud 108
- DS download 108
- DS file 108
- Use Other Mobile Devices 109
- Troubleshooting 110
- SYNOLOGY, INC 111
- END USER LICENSE AGREEMENT 111
- LIMITED PRODUCT WARRANTY 113
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