請教有玩 unRAID 6 嘅師兄

本帖最後由 GbE 於 2015-9-21 05:05 編輯

玩咗一排但有3個速度樽頸問題想請教, 如果確定換底板+CPU overcome 到就去馬。

1. Write speed
With parity 得 44MB/s, 如果 without parity 去到 100MB/s (LAN 係 1Gbps)
分析 : Target HDD & Parity HDD, 2隻各自同時 R/W 想快都難, 是否只可從換較快嘅 HDD 著手 ?? (唔唸 cache drive)

2. Parity check speed 100MB/s
受累北橋總頻寬所限, 6隻HDD 已接近頂 ( 最多應 800~900MB/s)
http://www.xtremesystems.org/for ... wfull=1#post4986739

3. 重做 Parity speed ~100MB/s (記憶係咁上下)
同第2點樽頸一樣



可否 share 你哋嘅 speed 去到幾多
因為唸緊用有限錢換 MB+CPU 會有乜增長, 順便趕埋 DD3 尾班, 但計嚟計去好似冇乜。

現時硬件
Athlon(tm) II X3 440, 880G 晶片, 4G DDR3, 一堆 Green HDD

想換
Intel G3260+B85晶片, 期望 PCH DMI2.0 會有 d 睇頭

本帖最後由 cal22cal 於 2015-9-21 11:10 編輯

冇玩過 unRAID , 係唔識嘅
不過 with parity 100MB read (HD read, pci, lan limits), 40MB write,
好似已經幾好, 做 parity 出嚟嗰時係要 Read-Write-Read
drop 1/2 應該算唔錯

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玩咗一排但有3個速度樽頸問題想請教, 如果確定換底板+CPU overcome 到就去馬。

1. Write speed
With parit ...
GbE 發表於 2015-9-21 04:21



    我反而想問問師兄.....手指CREATE果陣我冇成功過...
師兄你點解決?

想試都試唔到

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回覆 3# 口o口


    Try using English Windows to create

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回覆  口o口


    Try using English Windows to create
warrior 發表於 2015-9-21 15:28



    OK....我試試先...THX 師兄...

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本帖最後由 mwpmo 於 2015-9-21 21:28 編輯
我反而想問問師兄.....手指CREATE果陣我冇成功過...
師兄你點解決?

想試都試唔到 ...
口o口 發表於 2015-9-21 15:06


No need to use English version of Windows

1) ensure the volume label is "UNRAID"
2) use text editor to edit the file "make_bootable.bat"
3) search the text "goto exit" and replace it with "goto valid"

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玩咗一排但有3個速度樽頸問題想請教, 如果確定換底板+CPU overcome 到就去馬。

1. Write speed
With parit ...
GbE 發表於 2015-9-21 04:21


You can consider to use an Fast RAID card in IT mode and move the parity disk to this RAID card.
The idea is to split the traffic of parity and data disk to difference interface card.
(don't use those cheap and slow raid card like silicon image with PCIe x1 interfaceonly )

You can get a LSI 9240-8i (PCIe x4) in Taobao at about HK$6XX.

In my unRAID with 20 disk, I use 2 x 9240-8i + on-board SATA, the write with parity is about 80-90MB/s (MB is A885GM-A2 with dual core AMD CPU and 8GB RAM, quite Old but good for unRAID)

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本帖最後由 GbE 於 2015-9-22 03:12 編輯
You can consider to use an Fast RAID card in IT mode and move the parity disk to this RAID card.
T ...
mwpmo 發表於 2015-9-21 21:44


多謝師兄資料, 80MB 好太多
其實我都係睇咗你 3 年前嘅 unRAID post, 印象深刻, 不過好耐之後先踏出第一步
http://www.hkepc.com/forum/viewthread.php?tid=1811000

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師兄唔好意思, 再睇當年 post http://www.hkepc.com/forum/redir ... 00&pid=27741836,  Cache drive 一途似乎走唔甩
For Samba performance,
with SSD as cache drive I can easily get about 100MB/s write speed.
with HDD as cache drive, I can got about 60MB/s
without cache drive, I can get about 40MB/s

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本帖最後由 GbE 於 2015-9-22 02:57 編輯
No need to use English version of Windows  

1) ensure the volume label is "UNRAID"
2) use text ...
mwpmo 發表於 2015-9-21 21:27


師兄唔講都已唔記得, 我都係咁做, 好簡單就起咗個 unRAID 6 .... 第 2 日即科水買 Licence

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check BIOS, Set SATA to AHCI
IDE mode = super slow

Don't worry too much about parity speed, you will run it once per month only.

As recommended by other Ching, use LSI RAID card.

Persoanlly I don't but LSI card from taobao since after chatting with taobao shop owners, they say the cards are fakes.

Instead, go buy Dell/IBM card that use LSI chip and flash to LSI firmware

Check unRAID wiki for more info. If need more help, ask us here :)

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