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Knowledgebase : RAID Management
Before attaching an eSATA or USB disk drive to N5200, you have to partition and format it on a desktop computer or a notebook first. The attached device will be located at \\192.168.1.100\usbhdd\sdf1 where 192.168.1.100 means the IP address of N5200 a...
There is some thing about 2TB limitation on Microsoft Windows' file system. To use the disk that over 2TB capacity, Microsoft Windows had to convert the disk to GPT.For Microsoft Windows XP, only 64-bit edition supports GPT, which means all the other 32...
Cannot join AD server or access shares after updating NAS firmware or AD server Please verify the following Samba/CIFS settings in the NAS GUI if you cannot join the NAS into the AD anymore after you have updated the NAS firmware or AD server: Server Sig...
There is a very useful information about comparison of File Systems on WIKIPEDIA, please refer to http://en.wikipedia.org/wiki/Comparison_of_file_systems
We would recommend user using the same brand & model in a RAID. At first, the different model might have a little dirrerence, for example, thought the same "1TB" disks, in A model, it might be 931GB (*1), in B model, it might be actually 93...
There are two limitations, 1. The NAS system requires the space for management, the minimem size is 1% of the RAID space. Since the Target USB function is based on the NAS system, the maxium size for Target USB is 99% of the RAID space. 2. Due to the ...
N5200PRO supports disk roaming, that means when your N5200PRO was broken, you may shift your disks to a new N5200PRO. Limitation: You could shift RAID from N5200 to N5200 PRO, but shift RAID from N5200 PRO to N5200 might encounter unexpected issue...
N2050 works functionally with two drives,  please refer to our harddisk compatibility test report: http://www.thecus.com/download/other/N2050HDDCompatibilityReport-960829.pdf
N5200 doesn't support multiple RAID volumes. It mens the following configurations are not allowed. Configure HDD 1, 2, and 3 as RAID 5. Then set HDD 4 and 5 as RAID 0, 1 or JBOD. Configure HDD 1, 2, 3 and 4 as RAID 5. Then set HDD 5 as JBOD. Configure ...
If V1.05.00.22 can't add the HDD as spare while RAID degraded under some condition, please upgrade to V1.05.00.23 to fix this issue. http://www.thecus.com/Downloads/beta/FW/N4100EVO_FW_1.05.00.23.rom [http://www.thecus.com/Downloads/beta/FW/N4100EVO_FW_1...
If there is XFS error on EVO model, please try to download and upgrade firmware to version 1.05.00.23 firstly: http://www.thecus.com/Downloads/beta/FW/N4100EVO_FW_1.05.00.23.rom [http://www.thecus.com/Downloads/beta/FW/N4100EVO_FW_1.05.00.23.rom] After u...
How 4k or 4kn HDD support? 1. Since 2015 April, OS5 X64 firmware V2.05.08 and above add 4K native (4KN) HDD support already. 2. 512E, so for most HDD in market is 512E (physical 4K but emulation as 512). 3. 512 or 512 traditional HDD. NAS OS version lis...
If you want to backup file from Thecus NAS, we would recommend via following ways: 1. NSYNC to NSYNC, please refer to * Attchments: thecus n4100 nsync quick guide 2008-08-18.pdf * Attchments: thecus_nsync_over_internet_quick_guide_20090527.pdf 2...
Please switch to [Large] mode on RAID switch. [Large] mode means JBOD, please refer to D0204 user's manual page5 and page6: http://www.thecus.com/download/manual/D0204_QIG_v1.2.pdf
How to access data if NAS out of order or end of life? 1. Contact with your reseller, distributor or Thecus office for RMA request directly. And following reseller/distributor/office link for your reference: http://www.thecus.com/wtb.php [http://www.the...
Which disk cause RAID degraded can be check from admin UI [ Storage > RAID > RAID Config ], the disk without check is the disk cause RAID degraded.
How to count NAS BTU Generally Thecus NAS 1W about 4.265BTU/hr (Redundant power 4.2652BTU/hr ), thus we could converter from watt from power supply, also we could found the power supply specification from NAS specification: http://www.thecus.com [http:/...
How to enable HDD SMART 1. Generally HDD default the SMART function enabled, but in some case this function would disabled on unknown user or reason. 2. In order to get correct HDD health status from HDD, please try from following path to enable HDD SMART...
Rebuild a degraded RAID Once a disk left RAID-1 / RAID-5 / RAID-6 / RAID-10, the RAID status will change to "degraded" from "healthy". To rebuild a degraded RAID back to healthy again, please follow the next steps. In case one HDD failed in RAID-1 /...
How to remove "Global" Hot Spare 1. Due "Global" Hot Spare configured on NAS with HDD'serial number, thus please upload following patch to remove this record. 2. This patch executed and no need to reboot. 3. If don't know your NAS suit for which please ...
Please refer the following instruction to remove the spare mark. Shutdown the NASRemove the spare disk.Power ON the NAS.After NAS boot completed, hot-plug the spare disk.Go to admin console [Storage > RAID > RAID Config] you will see the RAID b...
Please refer to attachment How_Windows7_connect_to_VPN_Server_L2TP_IPSec.pdf
Hard drive manufacturers market drives in terms of decimal (base 10) capacity. In decimal notation, one megabyte (MB) is equal to 1,000,000 bytes, one gigabyte (GB) is equal to 1,000,000,000 bytes, and one terabyte (TB) is equal to 1,000,000,000,000 byt...
Q: I have RAID with small disk and want to expand the RAID with larger disks, why I can't get the full capacity for 2TB disks or larger disks?(For 32bit model) A: With firmware V3.x.x, the system use MBR to part the disks and create the RAID, due to MBR...
The default data percentage while you create a new RAID is 95%, therefor you will see only 5% space left. Thus, you have maxium "5%" space that you could decide to expand. In RAID information, you may see 95% for data and 5% unused, that means 95% of t...
IF N2310 HW DAMAGED HOW TO ACCESS DATA AGAIN. (RAID DATA RESCUE) Please kindly assist us doing following steps to update via USB & ADMIN WEB UI "BOTH" for this issue: A-USB Flash Please update N2310 internal MB OS to latest version: http://esupport.t...
If N2310 HW replaced but can't access to RAID data. If latest INTELLIGENT NAS V1.01.20 (http://install.thecus.com) unable help you to login NAS directly. But asking to "Create RAID", "ASSIST RIAD" or related message, please arrange following steps for o...
IF N2520 N2560 N4520 N4560 HW DAMAGED HOW TO ACCESS DATA AGAIN. (RAID DATA RESCUE) IF HDD & RAID IS HEALTH 1. Please arrange another same model NAS. 2. Via USB upgrade tool upgrade NAS HW to latest version. http://thecus.kayako.com/default_import/Knowle...
IF N4310 HW DAMAGED HOW TO ACCESS DATA AGAIN. (RAID DATA RESCUE) Please kindly assist us doing following steps to update via USB & ADMIN WEB UI "BOTH" for this issue: A-USB Flash Please update N4310 internal MB OS to 828 and then update to 867: N4310 ...
Due local display via VGA/HDMI need share system memory, if you have no this function anymore would let all memory for NAS, please refer to following patch ******************For OS7 if need no the HDMI/VGA local display function****************** Please...
If RAID degraded how should I do? If we created RAID 5 from HDD1, 2, 3 & 4, but system warning about RAID degraded, please check following steps: * Check from NAS ADMIN WEB page -> STORAGE -> RAID MANAGEMENT page, to check which HDD out of RAID. The...
iSCSI Expansion : there are some limitations applied. The maximum iSCSI volume would be 16TB, and the minimum expansion size is 1GB.iSCSI service will be stopped till the expansion completes.iSCSI expansion just handles the volume size. The partition(s) i...
iSCSI Quick Configuration Guide 64-bit FW edition for V2.04.05b or later This guide is for all Thecus NAS with 64bit firmware. N8900 / N8900V / N12000 / N12000V / N16000 / N16000V / N6850 / N8850 / N10850 / N2800 / N4800 / N5550 / N7700PROv2 / N8800PRO...
iSCSI Thin-Provisioning The Thin-Provision capacity has to be determined first.Up to five iSCSI Thin-Provision target can be created on the Thin-Provision capacity.The total virtual size of iSCSI Thin-Provision targets could not exceed 16 TB in a RAID.The...
For the model supports multiple RAID It is not possible to have two different file systems on 1 RAID volume. If you create a RAID, you have to determine the file system (ZFS, EXT3 or XFS). If you like to use 2 different file systems you do need to crea...
In a multiple RAID configuration, one RAID volume must be designated as the Master RAID volume. The Master RAID volume will store all installed modules. If the Master RAID is changed to another location (i.e. assigning HDD 2 to be the Master RAID volume...
N2050 目前只支援單顆硬碟容量為500GB,且 N2050 必須使用兩顆硬碟方能正常運作。 兩顆硬碟以同容量同型號為佳,以下是我們所測試過的硬碟相容性列表,供您參考: http://www.thecus.com/download/other/N2050HDDCompatibilityReport-960829.pdf 而 N2050 使用硬碟我們強烈建議使用兩個硬碟做 RAID 1 組態,因為 RAID 1 才能確保資料安全性;倘若您堅持使用一個硬碟的話,將 RAID 組態設定在 RAID 1...
OS5 X64 BTRFS snapshot guide: Snapshot_OS5_x64_v2.pdf Each model would keep difference snapshot copy depend on NAS’default DRAM size, and then new copy would replace oldest. 2GB -> 64 4GB -> 128 8GB-> 256 16GB -> 512 Example N2810 2GB DRAM -> 64 N2...
Overview about how Thecus staff check NAS remotely For some issue Thecus need arrange engineer to check your NAS remotely, and difference issue need very method to access your NAS or environment, thus following difference ways for your reference: 1. P...
RAID MIGRATION Changing the number of disks or RAID level in current RAID configuration. The system will list the possible migration paths, and administrator can choose a possible path. For example, RAID 1 with 2 disks can be migrated to RAID 5 with 5 di...
For N5200 or above models that support RAID volume expansion. For example, a RAID-5 with five 160GB disk drives could expand the capacity to RAID 5 with 1TB disk drives by the following way. RAID5 created by four 160GB disk drives. Replace one 160GB dr...
[About RAID Lost]When a RAID-1 / RAID-5 / RAID-6 / RAID-10 lost a disk, the RAID status will change from healthy to degraded. In general to say, RAID-1 array has mirror in every disk, you may read out the data from every disk if the file system is cle...
Thecus RAID roaming table: 1. Latest update at 2016 Sep, this table for RAID HDD & data roaming to another compatible NAS only. 2. About configuration & user account please download CONF.BIN and restore on new NAS, and CONF.BIN restore/upload need und...
Thecus OS5 X32 N7700 / N8800 series support EXT3, ZFS & XFS file systems. It is up to exist 3 set of RAID volume in one unit at the same time. There are some limitation of these three file system, * EXT3 supports up to 8TB for each data volume. * Z...
What is RAID? RAID (Redundant Array of Independent Disks) is a set of technology standards for teaming disk drives to improve fault tolerance and performance. RAID Levels LevelName 0Striping 1Mirroring 2Parallel Access with Specialized Disk...
RAID10 is a stripe(RAID0) of mirrors(RAID1) and least take four hard disks. RAID0 uses striping to write data across multiple drives simultaneously. This means that when you write a 5GB file across 5 drives, 1GB of data is written to each drive. Parall...
What the difference between Disk Security & RAID encryption? Disk Security base on ATA Securuty protocol between HDD & BIOS: http://www.answers.com/Q/What_is_ATA_Security_Mode http://www.t13.org/documents/UploadedDocuments/docs2006/e05179r4-ACS-Security...
Why can't found Thecus backup utility anymore?   Due Thecus bundled Acronis for years, and more and more 3rd party backup utility available, thus following  3rd party utility which support trans file between PC & NAS via network driver able to instead...
When a RAID-1 / RAID-5 / RAID-6 / RAID-10 lost a disk, the RAID status will change from healthy to degraded. It is not absolutely related to healthy of seperated disks. There are may reason that disk left the RAID, for example, a power cut of single dis...
With HDD data density going up but reliability, and each HDD model have difference fault tolerance, we try to let user know the HDD latest condition before HDD damaged as possible, thus we make this function to info the HDD latest status for user know: ...
Why NSYNC show VPN_FAIL Due to NSYNC & RSYNC default through VPN SSL for data transition, due OS5 X32 end of life for a while thus we have no plan to update the VPN SSL, and following suggestion for your reference: * Change to LEGACY FTP SERVER mode...
Why SYSTEM FAILOVER unable change to another node automatically. The SYSTEM FAILOVER as like real time DATAGUARD/RSYNC function, thus if first node down and we need to switch 2nd node manually.
Basically, please refer to the following links, I have 1TB disk, but the system tell me it was 931GB disk? I would like to expand my RAID, why only 5% I could expand?Based on these knowledge's, we acknowledges that the data capacity might be smaller ...
Why Thecus high memory usage easily? Thecus NAS always take high memory usage for best performance and able to reduce system response time,  thus you don’t need to worry about the memory usage. Normally Thecus NAS memory usage will going up still 9x%  f...
The W series NAS base on Windows Server 2012 and following links for your reference: http://blogs.technet.com/b/filecab/archive/2012/12/06/using-the-storage-pools-page-in-server-manager-to-create-storage-spaces.aspx [http://blogs.technet.com/b/filecab/a...
ZFS Limitations ZFS does not support NFSWhen share folders created on ZFS RAID, NFS button in admin Web UI will be grayed out. [Storage > Folder]NFS clients could not showmount the share folders created on ZFS RAID.ZFS does not support AFPMac comput...
請按照下列步驟來做 File System Check:   1. 先將 N4100 關機. 2. 將 N4100 開機, 按 reset 鍵 10 秒鐘. 3. 將網路線連至上方網路孔, 透過 192.168.1.100 的 IP 連接進維護模式的介面. 4. 選擇做 "Run file system check", 來維護 RAID.   在這邊提醒您, 由於做維護時, 如果有意外的斷電或者硬碟有不...
當硬碟離開了 RAID-1 / RAID-5 / RAID-6 / RAID-10 磁碟陣列,磁碟狀態就會由健康變成「降級」(degraded)。要修復 RAID 回復為健康狀態,請參考以下的步驟: 如果發生降級之後並沒有重新開機,那麼只要抽出損壞的硬碟,等待約一分鐘,再插入新的硬碟,系統就會自動重建 RAID。 萬一系統沒有自動開始重建 RAID,或是曾經將 NAS 重新開機,那麼,系統管理員必需透過 WEB 管理介面手動進行。 Firmware 版本小於 3.00.00 登入 Web 管...
當 RAID-1 / RAID-5 / RAID-6 / RAID-10 有任何一顆硬碟離線,RAID 的狀態就會由健康 (Healthy) 被降級 (Degraded)。 通常來說,RAID-1 為鏡射所有的磁碟機,所以當 RAID-1 被拆掉之後,仍然可以由個別的磁碟機讀出資料。 RAID-5 允許 1 顆磁碟機離線,若 RAID-5 失去了 2 顆磁碟,則 RAID-5 會損毀。在特定情況下,仍有機會救援。 RAID-6 允許 2 顆磁碟機離線,若 RAID-6 失去了 3 顆磁碟,則 RAI...
S.M.A.R.T.是 Self-Monitoring, Analysis and Reporting Technology (自我監測分析報告技術) 的縮寫,可以監測硬碟的健康狀態,及使用特殊的演算法來預測可能發生的硬碟故障。 關於硬碟 S.M.A.R.T. 的詳細解釋,您可以參考 PC Magazine , http://www.pcmag.com/article2/0,1759,1879485,00.asp 或是 Wikipedia, http://en.wikipedia.org/wi...