Home » Netgear Manuals » Network Storage Servers » Netgear RN3138 » Manual Viewer

Netgear RN3138 Software Manual - Page 49

Bit Rot Protection, Managing Bit Rot Protection, To set or change bit rot settings, Shared Folders

Add to My Manuals
Save this manual to your list of manuals

Page 49 highlights

ReadyNAS OS 6.4 Bit Rot Protection Bit rot is a term sometimes used to describe the gradual changes in disks causing a slow loss of reliability. ReadyNAS OS can use the checksum functions to check for bit rot and the redundancy in RAID-protected disks to rewrite corrected data. RAID levels other than RAID 0 provide data redundancy used to detect, and in some cases correct, disk read errors. Sometimes a read error is a one-time error, but other times, the data on the disk is no longer reliable because of changes to the disk with age (disk bit rot). With bit rot protection turned on, when an error is detected, the data is rewritten, which restores the reliability of the data, in effect restarting the clock on the bit rot. Bit rot protection is available for any folder stored on your ReadyNAS server. On higher-end models it is on by default. Bit rot protection can slow the performance of a system, and so is not on by default on lower-end models. Managing Bit Rot Protection Bit rot protection can protect your data from the gradual loss of reliability of disks as they age. It can impact performance, so you can turn it on and off for individual folders. Bit rot protection is also called copy-on-write. To set or change bit rot settings: 1. Log in to your ReadyNAS server. 2. Select Shares > Browse. 3. Right-click the folder. 4. In the pop-up menu, click the Settings button. Shared Folders 49

Section	Page
Contents	3
1. Getting Started	8
Quick-Start Guide	9
Additional Documentation	9
Supported ReadyNAS Systems	9
Supported Operating Systems	10
Supported Browsers	10
Diskless Systems	11
Basic Installation	11
Upgrade ReadyNAS Firmware for Use With ReadyCLOUD	12
Discover and Set Up Your ReadyNAS	13
Local Setup Wizard	15
Local Admin Page	16
Access the Local Admin Page	17
Register Your System	18
Five Levels of Protection	20
2. Volume Configuration	21
Basic Volume and RAID Concepts	22
Volumes	22
RAID	22
Manage Volumes	25
Change RAID Mode	25
View the Status of a Volume	28
Configure the Checksum Function	30
Create and Encrypt a Volume	31
Delete a Volume	33
Expand Storage Capacity	34
Add Protection to a Volume	37
Maintain Volumes	39
Balance a Volume	41
Export a Volume	42
Schedule Volume Maintenance	43
3. Shared Folders	45
Basic Shared Folder Concepts	46
Data Organization	46
Shared Folder Defaults	46
File and Folder Names	47
File-Sharing Protocols	47
Quotas on Shared Folders	48
Bit Rot Protection	49
Managing Bit Rot Protection	49
Home Folders	50
Manage Shared Folders	50
Create a Shared Folder	50
View and Change the Properties of a Shared Folder	52
Delete a Shared Folder	53
Browse a Shared Folder	54
Shared Folder Access Rights	55
User and Group Authentication	55
Set Network Access Rights to Shared Folders for Common Protocols	55
Set Network Access Rights to Shared Folders	56
Set Up Access Rights to Files and Folders	68
Access Shared Folders from a Network-Attached Device	71
Use a Web Browser	71
Use a Windows Device	72
Use a Mac OS X Device	73
Use a Linux or Unix Device	73
Use FTP and FTPS	74
Use Rsync	75
Access Shared Folders Using Cloud Services	75
Use ReadyCLOUD	76
Join ReadyCLOUD	76
Use ReadyCLOUD to Share Folders Through email	77
Use ReadyCLOUD to Share Folders With ReadyCLOUD Users	80
Delete ReadyCLOUD Users	83
Manage Permissions for ReadyCLOUD Users	83
Access Your System Using ReadyCLOUD	85
Use ReadyNAS Remote	85
4. LUNs	91
Basic LUN Concepts	92
Thin and Thick Provisioning	92
Default LUN Settings	93
Manage LUNs	93
Create a LUN	93
View and Change the Properties of a LUN	95
Expand the Size of a LUN	97
Delete a LUN	99
LUN Groups and Access Rights	100
Create a LUN Group	101
Assign a LUN to a LUN Group	101
Remove a LUN from a LUN Group	102
Delete a LUN Group	103
Manage Access Rights for LUN Groups	104
Access LUN Groups from an iSCSI-Attached Device	111
Set Up Initiator Access	111
Initialize and Format LUNs	116
5. Snapshots	119
Basic Snapshot Concepts	120
Smart Snapshot Management	120
Rolling Back	121
Clones	121
Manually Take a Snapshot	121
Browse Snapshots Using Recovery Mode	122
Roll Back to a Snapshot	123
Roll Back to a Snapshot Using Recovery Mode	124
Roll Back to a Snapshot Using the Timeline	125
Clone Snapshots	128
Delete Snapshots	131
Delete Snapshots Using Recovery Mode	131
Delete Snapshots Using the Timeline	133
Recover Data from a Snapshot	134
Recover Data from a Snapshot to a Network-Attached Device	135
Recover Data from a Snapshot to an iSCSI-Attached Device	135
6. Users and Groups	136
User and Group Accounts	137
Home Folders	137
User and Group Account Limitations	137
User and Group Management Modes	137
User Accounts	140
Configure Default User Settings	140
Create User Accounts	141
Edit User Accounts	142
Delete User Accounts	143
Change User Passwords	143
Group Accounts	144
Create Groups	144
Edit Groups	145
Delete Groups	147
Cloud Users	147
Grant Access to Cloud Users	148
Cloud User Access Rights	148
7. System Settings	149
Customize the Basic System Settings	150
Set the Clock	150
Select the Language	151
Set the Administrator Password	152
Configure System Alerts	153
Configure the Host Name	153
Enable Antivirus	154
Configure the Network Settings	155
Network Basic Concepts	155
Configure the Ethernet Interfaces	157
Configure Bonded Adapters	159
Configure Static Routes	165
Configure Global Settings for File-Sharing Protocols	166
Basic File-Sharing Concepts	166
Supported File-Sharing Protocols	166
Configure File-Sharing Protocols	168
Download SSH Public Key File	172
Configure a User Account to Use SSH	173
Configure Media Services	174
ReadyDLNA	174
iTunes Streaming Server	177
Configure Discovery Services	178
Install and Manage Apps	179
Install Apps	179
Manage Installed Apps	180
8. System Maintenance	181
System Monitoring	182
System and Disk Health Information	182
System Real-Time and Historical Monitoring	182
System Logs	185
Downloading Logs	187
SNMP Monitoring	188
System Maintenance	189
Update Firmware	189
Reset the Firmware to Factory Defaults	192
Recover the Administrator Password	192
Shut Down or Restart the System	195
Manage Power Usage	196
What Is Disk Spin-Down	198
Set or Change Disk Spin-Down	199
Optional Uninterruptible Power Supplies	200
Uninterruptible Power Supplies	200
UPS Configurations	200
Manage UPS Devices	200
9. Backup and Recovery	205
Back Up or Restore System Configuration	206
Basic Data Backup and Recovery Concepts	207
Backup Concepts	207
Recovery Concepts	209
Secure Cloud Backups	210
Backup Protocols	210
Backup Job Recommendations	211
Manage Backup and Recovery Jobs	211
Create a Backup Job	212
Create a Recovery Job	215
Modify a Backup or Recovery Job	219
Manually Start a Backup or Recovery Job	228
Delete a Backup or Recovery Job	229
View or Clear a Job Log	229
Configure the Backup Button	230
Back Up Windows Computers and Mac Computers to ReadyNAS	232
File Synchronization Across Computers	234
Work on Files Across Windows Computers and Mac Computers Using ReadyNAS	234
Time Machine	236
Back Up Your Mac Using a Shared Time Machine	236
Back Up Your Mac Using a Private Time Machine	238
Increase Your Time Machine Backup Capacity	240
ReadyNAS Vault	241
Dropbox	242
ReadyNAS Replicate	243

Match case Limit results 1 per page

Bit Rot Protection

Bit rot is a term sometimes used to describe the gradual changes in disks causing a slow loss of reliability. ReadyNAS

OS can use the checksum functions to check for bit rot and the redundancy in RAID-protected disks to rewrite

corrected data.

RAID levels other than RAID 0 provide data redundancy used to detect, and in some cases correct, disk read errors.

Sometimes a read error is a one-time error, but other times, the data on the disk is no longer reliable because of

changes to the disk with age (disk bit rot). With bit rot protection turned on, when an error is detected, the data is

rewritten, which restores the reliability of the data, in effect restarting the clock on the bit rot.

Bit rot protection is available for any folder stored on your ReadyNAS server. On higher-end models it is on by

default. Bit rot protection can slow the performance of a system, and so is not on by default on lower-end models.

Managing Bit Rot Protection

Bit rot protection can protect your data from the gradual loss of reliability of disks as they age. It can impact

performance, so you can turn it on and off for individual folders. Bit rot protection is also called copy-on-write.

To set or change bit rot settings:

Select

Shares > Browse

Right-click the folder.

In the pop-up menu, click the

Settings

button.

Shared Folders

ReadyNAS OS 6.4