High-Availability User s Guide v2.00

Transcription

1 Intended Audience The information presented in this manual is written for storage administrators to build Thecus High-Availability system. Requirement Two Thecus NAS with High-Availability Firmware or above Document Feedback Thecus welcomes your suggestions for improving our documentation. If you have comments, issue your feedback to 1/24 May 28, 2012

2 1. Introduction HA function Description HA Setup Procedure System Requirements Primary Server Check the WAN setting Start to Setup HA Secondary Server Check the WAN setting Start to Setup HA Reboot both servers and check HA Ready The conditions for Primary server taken over by Secondary: How to change IP for HA server Stop the HA Stop the HA service on Primary Server Stop the HA service on Secondary Server Change IP on both server Change the IP on Primary Server Change the IP on Secondary Server Enable HA on both servers Enable HA on Primary Server Enable HA on Secondary Server Reboot the both servers Recovery for HA /24 May 28, 2012

3 1. Introduction High-Availability (HA) keeps your data active on two separate HA systems supports Active / Passive - provides a fully redundant instance of each node, which is only brought online when it s associated primary node fails. 3/24 May 28, 2012

4 1.1 HA function Description 1. HA keeps data updated on one Primary and one Secondary NAS. All functions are run through a single virtual IP address that accesses the Primary NAS normally and automatically switches to the Secondary NAS if necessary. The HA system synchronizes the Master RAID volume from the Primary NAS on the Secondary NAS using 'Heartbeat' packets. With HA, only ONE RAID volume can be created, the Master RAID. 2. Activating HA deletes all existing data on the NAS. Because of this, it is recommended to first backup any important data before activating HA. 3. Please double-check all HA settings before activation to avoid having to reset HA in the future. 4. Step-by-step activation setup: A. Create a Master RAID volume on the Primary NAS. B. Create a Master RAID volume on the Secondary NAS. C. Activate HA on the Primary NAS and allow the system to restart (This will delete all existing data on the NAS) D. Activate HA on the Secondary NAS and allow the system to restart (This will delete all existing data on the NAS) E. This will begin Primary and Secondary NAS synchronization. Additional Notes: 1. A NAS with HA activated can only have one RAID volume. If HA is deactivated, the RAID volume will be marked as Used for HA and unusable if HA is deactivated. 2. All settings for the Secondary NAS are controlled from the Primary NAS, for example AFP, FTP, NFS, iscsi and Shared Folder functions. 3. After one NAS experiences problems and is back online, it will recover data from another NAS. During data recovery, DO not restart or turn off either NAS. 4. The HA function does not support encrypted RAID. 5. The HA function does not support multiple RAID. 4/24 May 28, 2012

5 2. HA Setup Procedure 2.1 System Requirements HA needs two units to be setup one each for Primary and Secondary unit and both units have to build up RAID volume in prior. Let s take example for two HA Units. Host1: hostname:ha-1 ( ) Host2: hostname:ha-2 ( ) The demonstration firmware version is Before we start to build HA, we need to have RAID volume on both two units. Please note that encrypted RAID is not supported. Primary Server has RAIDHA1 with capacity 2,792GB Secondary Server has RAIDHA2 with capacity 2,792GB 5/24 May 28, 2012

6 2.2 Primary Server Setup Primary Server (Active) for HA, take example unit N16000-Active ( ): Check the WAN setting Check the setting of Host Name, DNS, IP, Netmask and Gateway in menu [System Network / Networking]. 6/24 May 28, 2012

7 2.2.2 Start to Setup HA 1. Login in to web UI of system then go to [Storage / High-Availability] HA configuration page. 2. Click on Enable radio button, you will see the configuration page was expanded. Fill Virtual host name, Secondary host name, Indicator IP, Virtual IP and Secondary IP. 7/24 May 28, 2012

8 3. For example, the secondary server named N16000-Standby at IP We also check the virtual host name as HA at IP Click Apply to save HA Primary Server configuration. 5. After click Apply, you will see a window pop up to notice waiting for secondary server. Please next to Section 2.3 for secondary server configuration. Normally, it is not necessary to change Heartbeat Configurations. If the configurations have been changed, be sure to do same settings on the HA Secondary Server. 8/24 May 28, 2012

9 2.3 Secondary Server Setup Secondary Server for HA, take example unit N16000-Standby ( ): Check the WAN setting Check the setting of Host Name, DNS, IP, Netmask and Gateway in menu [System Network / Networking]. 9/24 May 28, 2012

10 2.3.2 Start to Setup HA 1. Login in to web UI of system then go to [Storage / High-Availability] HA configuration page. 2. Click on Enable radio button, you will see the configuration page was expanded. 3. On secondary server, you only need to enable High-Availability, check Secondary Server, fill in Primary Server IP and click Detect, you will see a Waiting: message pop up. Please go to next section /24 May 28, 2012

11 2.4 Reboot both servers and check HA Ready After you have configured secondary server, please go back to the primary server. A popped up windows will ask you to reboot the unit. Please click Yes, this action will reboot both primary and secondary server. HA Primary Server Caption: Screen shot of [System Network / High-Availability] 11/24 May 28, 2012

12 HA Secondary Server The Standby unit has no accessibility as its roll played. Caption: Screen shot of [System Network / High-Availability] The conditions for Primary server taken over by Secondary: 1. Primary Server RAID damage 2. Losing Primary Server data port connection 3. Losing Heartbeat connection 4. Primary Server has down 12/24 May 28, 2012

13 3. How to change IP for HA server In this session we will change IP on both server and virtual IP of HA server. Primary Server: > Secondary Server: > Virtual IP: > Stop the HA Stop the HA service on Primary Server 1. Login in to web UI of system Primary Server ( ) then go to [Storage / High-Availability] HA configuration page. 13/24 May 28, 2012

14 2. Click Setting tab. Click Disable and Apply. 3. This action will disable HA and require rebooting the Primary Server. 14/24 May 28, 2012

15 3.1.2 Stop the HA service on Secondary Server 1. Login in to web UI of system Secondary Server ( ) then go to [Storage / High-Availability] HA configuration page. 2. Click Setting tab. Click Disable and Apply. 3. This action will disable HA and require rebooting the Primary Server. 15/24 May 28, 2012

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17 3.2 Change IP on both server Change the IP on Primary Server 1. Login in to web UI of system Secondary Server ( ) then go to [System Network / Networking] configuration page. Change the IP from to and click Apply. 2. System will request for reboot. 17/24 May 28, 2012

18 3.2.2 Change the IP on Secondary Server 1. Login in to web UI of system Secondary Server ( ) then go to [System Network / Networking] configuration page. Change the IP from to and click Apply. 2. System will request for reboot. 18/24 May 28, 2012

19 3.3 Enable HA on both servers Enable HA on Primary Server 1. Login in to web UI of system Primary Server ( ) then go to [Storage / High-Availability] HA configuration page. Click on Enable radio button, you will see the configuration page was expanded. Fill Virtual IP, Secondary IP and click Apply. 2. While the system asks for recovery HA RAID, please click No, continue. 3. System is standing by, please go next session for secondary server setup. 19/24 May 28, 2012

20 3.3.2 Enable HA on Secondary Server 1. Login in to web UI of system Primary Server ( ) then go to [Storage / High-Availability] HA configuration page. Click on Enable radio button, you will see the configuration page was expanded. Fill new IP of Primary Server and click Detect. 2. While the system asks for recovery HA RAID, please click No, continue. 3. System is standing by, please go next session for reboot both servers. 20/24 May 28, 2012

21 3.3.3 Reboot the both servers Please go back to the primary server. A popped up windows will ask you to reboot the unit. Please click Yes, this action will reboot both primary and secondary server. 21/24 May 28, 2012

22 4. Recovery for HA This session is simulate that primary server was defected and get another unit to replace the Primary Server. 1. After the primary server was done, we could check the HA setting in Secondary Server, we could find Secondary Server took the Active role. 2. After we have received a new Thecus unit, install the original disks and use Thecus Setup Wizard to configure the WAN IP. 3. Go into the menu [Storage / RAID Management] we could find the RAID marked as Used for HA. 22/24 May 28, 2012

23 4. Click HA Recovery button. 5. You may need to enter the heartbeat IP of Active role. For this case, the primary server was done, therefore the IP of Active is Primary Server now, we should fill in the heartbeat IP as , the IP address is beyond to your configuration. 6. Wait for system checking the configuration, you will be asked to reboot the unit. 23/24 May 28, 2012

24 7. After reboot the unit, you may check the HA status and found the Primary Server is acting as standby role. (* This action was decided by the option Auto Failback set to off ) 8. Check the Secondary Server which is acting as Active role. 24/24 May 28, 2012