Buffalo TeraStation 5020 User manual

Network Attached Storage
TeraStation 5020
User Manual
Please make sure to read this manual before using and follow the procedures. If you have any inquiries about
the product, contact the number on the warranty statement or the packing box. Do not discard the included
documents, the warranty statement, or the packing box.
www.buffaloamericas.com
35022387-03
February 2023

Table of Contents
Chapter 1 Notice .......................................................... 10
Regulatory Compliance Information........................................... 10
Warning Symbols and Graphical Icons on the Product.............. 10
Safety Precautions ........................................................................ 10
Chapter 2 Getting Started .......................................... 12
Diagrams........................................................................................ 12
4-Bay and 8-Bay Desktop Models, 4-Bay Rackmount Model ...............12
12-Bay Rackmount Model .......................................................................15
Turning the TeraStation On and Off............................................. 17
Creating a USB Initialization Drive .............................................. 17
Accessing Settings ........................................................................ 17
Opening Settings .....................................................................................18
Configuring Settings via Setup Wizard ..................................................20
Checking the Device Information from Dashboard ..............................21
Shutting Down or Restarting the TeraStation from Settings ...............22
Chapter 3 File Sharing................................................. 23
Configuring Shared Folders ......................................................... 23
Adding a Shared Folder...........................................................................23
Recycle Bin................................................................................................25
Read-Only Shares.....................................................................................25
Hidden Shares ..........................................................................................26
Configuring Users ......................................................................... 26
Adding a User...........................................................................................26
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Importing User Information....................................................................29
Adding a Group ............................................................................. 29
Configuring Access Restrictions .................................................. 32
Restricting Local User Access to Shared Folders ...................................32
Restricting AD Domain User Access to Shared Folders.........................34
Restricting Access to Subfolders ............................................................37
Enhancing Compatibility for macOS Client Access .................... 39
NFS ................................................................................................. 40
Enabling NFS ............................................................................................40
NFS Mount Commands............................................................................45
Offline Files for Windows.............................................................. 45
Chapter 4 RAID Modes and Drive Management ....... 48
Available RAID Modes .................................................................. 48
Working with RAID Arrays............................................................ 49
Using JBOD...............................................................................................49
Creating a RAID Array..............................................................................50
Shutting Down the TeraStation Automatically If an Error Occurs........51
Rebuilding the RAID Array Automatically for the TS51220RH.............53
Configuring Actions for If a Drive Used for the RAID Array Has Not Been
Detected ...................................................................................................55
Configuring a Hot Spare..........................................................................57
Managing a RAID Array Without Deleting Data ....................................59
RAID Scanning..........................................................................................63
Configuring Low Drive Space Alerts............................................ 64
Adding an External Drive ............................................................. 65
Dismounting Drives ...................................................................... 66
Using the Function Button ......................................................................67
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Using Settings ..........................................................................................67
Checking Drives ............................................................................ 68
S.M.A.R.T. ....................................................................................... 69
Displaying S.M.A.R.T. Information .........................................................70
Checking the Drive Condition.................................................................71
Formatting Drives ......................................................................... 71
Encrypting Drives.......................................................................... 73
Erasing Data on the TeraStation Completely.............................. 73
Quotas............................................................................................ 74
Limits for Shared Folders ........................................................................74
Limits for LVM Volumes ...........................................................................75
Using the TeraStation as an iSCSI Device .................................... 78
Introduction .............................................................................................78
Creating an iSCSI Volume........................................................................79
Connecting Volumes................................................................................81
Formatting Volumes ................................................................................82
Disconnecting Volumes...........................................................................82
Configuring Access Restrictions .............................................................82
Connecting Access-Restricted Volumes .................................................85
Expanding Volume Sizes .........................................................................86
Deleting Volumes.....................................................................................88
Enabling the iSNS Protocol .....................................................................89
Advanced iSCSI Volume Settings............................................................90
Chapter 5 Backup ........................................................ 91
Snapshots ...................................................................................... 91
Overview ..................................................................................................91
Application for iSCSI Volume Snapshots ...............................................91
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Manually Creating a Snapshot................................................................91
Accessing the Snapshots via SMB...........................................................95
Restoring Snapshots................................................................................97
Configuring Schedule Snapshot...........................................................101
Configuring Snapshot Archive Settings...............................................105
Backing Up Data on the TeraStation.......................................... 111
Backup Modes........................................................................................112
Preparing a Backup Destination...........................................................115
Configuring a Backup Job .....................................................................117
If Backing Up from rsync-Compatible Devices to the TeraStation.....122
Restoring Backup Data..........................................................................123
Backup Logs for If Backup Fails ............................................................127
Replication................................................................................... 130
Preparing a Replication Destination ....................................................131
Configuring a Replication Job ..............................................................133
Synchronizing Between Source and Destination TeraStations
Periodically.............................................................................................135
Failover ........................................................................................ 136
Before Configuring Failover..................................................................137
Usage Restrictions .................................................................................138
Configuring Failover..............................................................................139
Changing Settings While Failover Is Configured.................................141
Maintenance Mode ................................................................................141
Synchronizing Between Main and Backup TeraStations Periodically144
Switching to the Backup TeraStation Manually...................................146
Reconfiguring After Failover Occurs ....................................................146
Stopping Failover...................................................................................148
Backing Up Your Mac with Time Machine ................................. 150
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Chapter 6 Cloud Services and Remote Access......... 156
Synchronizing with Amazon S3 ................................................. 156
Creating an Amazon S3 Job ..................................................................156
Uploading Files to Amazon S3..............................................................159
Synchronizing with Dropbox ..................................................... 163
Creating a Dropbox Sync Job................................................................163
Changing Job Settings ..........................................................................166
Creating a Shared Link (Windows Only)...............................................169
Using Microsoft Azure for Data Preservation ........................... 169
Creating an Azure Storage Sync Backup Job.......................................169
Creating an Azure Storage Sync Restore Job.......................................177
Changing Job Settings ..........................................................................182
Synchronizing with Microsoft OneDrive................................... 185
Creating a OneDrive Sync Job...............................................................185
Changing Job Settings ..........................................................................196
Corrective Actions for in Case of Error .................................................198
WebAccess ................................................................................... 201
Configuring WebAccess.........................................................................201
Accessing via WebAccess.......................................................................204
Unable to Create a BuffaloNAS.com Name..........................................205
FTP................................................................................................ 206
Enabling FTP ..........................................................................................206
Accessing the TeraStation with an FTP Client......................................207
Chapter 7 Security Enhancement............................. 209
Two-Factor Authentication ........................................................ 209
Enabling Two-Factor Authentication ...................................................209
Restricting Logins for Non-Admin Users..............................................214
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Disabling Two-Factor Authentication ..................................................216
Encrypting Data Transmission ................................................... 218
Encrypting Settings Data ......................................................................218
Encrypting FTP Transfer Data ...............................................................219
SSL...........................................................................................................219
Chapter 8 Settings Backup/Restoration .................. 221
Saving and Applying Settings.................................................... 221
Saving Settings ......................................................................................222
Applying Settings ..................................................................................222
Transferring Another Buffalo NAS Device’s Settings ............... 223
Creating a Config File (.nas_config)......................................................224
Transferring Settings.............................................................................224
Restoring Factory Defaults......................................................... 225
Initializing from Settings ......................................................................225
Initializing Using the USB Initialization Drive .....................................226
Resetting the Administrator Password ..................................... 227
Chapter 9 Network Settings ..................................... 229
Wake-on-LAN .............................................................................. 229
Port Trunking............................................................................... 229
SNMP............................................................................................ 232
Proxy Server ................................................................................ 234
Jumbo Frames ............................................................................. 235
Changing the IP Address ............................................................ 236
Mapping IP Address and Hostname .......................................... 238
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Chapter 10 Advanced Features ................................ 240
Email Notification ....................................................................... 240
Enabling Email Notification ..................................................................240
Changing Events for Email Reports......................................................241
Sleep Mode .................................................................................. 242
UPS (Uninterruptible Power Supply)......................................... 244
One PSU Device Is Installed...................................................................245
Two PSU Devices Are Installed..............................................................246
Automatic Shutdown If Power Supply Fails.............................. 247
Logs .............................................................................................. 248
Displaying TeraStation’s Logs ...............................................................248
Transferring Logs to the Syslog Server ................................................249
Creating a Shortcut to the Logs in the Shared Folder.........................250
Changing Archive Rules for File Access Logs.......................................251
Updating the Firmware............................................................... 252
Updating Manually Using Settings ......................................................252
Enabling Automatic Update..................................................................253
Configuring Update Notification..........................................................254
Name, Date, Time, and Language .............................................. 255
Beep Alerts .................................................................................. 257
LCD and LEDs............................................................................... 258
Chapter 11 Drive Replacement and Troubleshooting ...
..................................................................................... 260
Replacing a Defective Drive on the TS51220RH ....................... 260
Drive Replacement for a Redundant RAID Array.................................260
Drive Replacement for a RAID 0 Array .................................................262
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Drive Replacement for a JBOD..............................................................263
Drive Replacement for a Hot Spare ......................................................263
Replacing a Defective Drive on Models Other Than the
TS51220RH .................................................................................. 263
Drive Replacement for a Redundant RAID Array (TeraStation Is On) 264
Drive Replacement for a Redundant RAID Array (TeraStation Is Off)267
Drive Replacement for a RAID 0 Array .................................................268
Drive Replacement for a JBOD..............................................................269
Drive Replacement for a Hot Spare ......................................................269
Replacing a Non-Malfunctioning Drive..................................... 270
Re-Inserting Drives ..................................................................... 270
TeraStation Does Not Work Properly......................................... 272
Power LED Keeps Blinking ....................................................................272
Booting the TeraStation in Emergency Mode......................................273
Unable to Access Shared Folders ............................................... 273
Opening the Network Credentials Window .........................................274
Restoring Owner and Permission Settings ..........................................274
Configuring Compatible SMB Protocols ..............................................276
Cleaning the Dustproof Filter .................................................... 277
Chapter 12 Utilities.................................................... 280
NAS Navigator2........................................................................... 280
Windows .................................................................................................280
macOS.....................................................................................................280
NovaBACKUP ............................................................................... 280
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Chapter 13 Appendix ................................................ 281
LCD Panel..................................................................................... 281
Modes .....................................................................................................281
Errors.......................................................................................................282
Notices ....................................................................................................283
Information Events ................................................................................284
Default Settings .......................................................................... 286
Specifications .............................................................................. 287
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