cas用nas

fansullivan

要幾快cpu同幾多ram?
係咪synology最好?

史的墳

Are u using Linn DS?  If Linn DS, QNAP is the best.....

fansullivan

Are u using Linn DS?  If Linn DS, QNAP is the best.....
史的墳 發表於 2011-8-18 18:52

going to buy a linn ds
i found more comment synology is better than qnap in general.
what factor is qnap better than synology for a linn ds user?

史的墳

Where did you find the comments?

QNAP has TwonyMedia Server installed and this is the best media server for Linn.  You can refer the articles in Linn Forums and get the answer.  For me, I have both "QNAP 259 Pro" and "Synology 710+".  When I played same source file to my previous Linn Klimax DS, I found that QNAP produces more natural sound than Synology.  But the difference is very minimal......

fansullivan

those comments for general usage only, not on audio basis.
what does TwonyMedia Server make the different for linn ds?
also, does a fanless nas make the different for linn ds?
http://www.qnap.com/cht/pro_detail_hardware.asp?p_id=112

BoB182

我朋友Linn用Synology會出唔到封面架
我自己都係用Qnap

raywan

要幾快cpu同幾多ram?
係咪synology最好?
fansullivan 發表於 2011-8-18 09:39

I have both Synology DS710+ and QNAP TS239 Pro II connecting to my Linn Klimax DS.

Both CPU (1.67GHz) and RAM (1GB) are the same for DS710+ and TS239 Pro II.



I prefer to use the built-in Twonky Media Server of QNAP with Linn DS rather than Synology UPnP



As suggestion, for use with musical digital streaming with Linn DS, QNAP is preferred.

For normal NAS usage, Synology is preferred.



If you have a lot of audio files, a faster CPU with more RAM will make the Re-Scan or Re-Built of the content much faster.

For example, I have over 2200 album with over 28,000 songs, the re-built just takes 10~20 minutes with TS-239 Pro II.

For lower grade QNAP NAS, the time taken may be over an hour.

fansullivan

thx for all ching advice, very useful

safin

If you really care of your audio files, suggest you get a 4 bay NAS.  Set 2 HDD in RAID 1 & the other HDD as a backup.  Such setting is expensive but minmize the lost of data & previous (time consuming) ripped audio files.

I have been using QNAP NAS for my office for years, quite stable so far.

BoB182

回復 10# brkkh


收到，原來要做番D設定
唔該哂大大，等我話返俾個老友知先

raywan

If you really care of your audio files, suggest you get a 4 bay NAS.  Set 2 HDD in RAID 1 & the other HDD as a backup.  Such setting is expensive but minmize the lost of data & previous (time consuming) ripped audio files.

I have been using QNAP NAS for my office for years, quite stable so far.
safin 發表於 2011-8-18 23:53

For storage of audio files, unless you have extremely large collection, I consider using 2 bay NAS (2TB x 2) is more than enough for most of the users.

At present, I have over 2,200 albums with over 28,000 songs, the required storage is just around 1TB.



However, I totally agree the importance on doing regular backup for all your audio files.

What I currently do :

(1) QNAP TS-239 Pro II: 2TB x 2 in RAID 1 (i.e. real time mirror image copy and protection)
(2) External stand alone 2TB x 1 HD (backup from QNAP TS-239 Pro II for every week)
(3) Synology DS710+: 2TB x 2 in RAID 1 (backup from QNAP TS-239 Pro II for every month)

Hence, for 1TB audio files, I have at least 3 backup for them in order to securely protect the files in any accidental loss.

fansullivan

買左QNAP TS-219P+
好難set

raywan

買左QNAP TS-219P+
好難set
fansullivan 發表於 2011-8-20 02:28

Although, the QNAP interface is not as user friendly as Synology,

the QNAP settings for normal usage is actually not difficult.

You may just try and error to find them out.

Anyway, I strongly suggest you to set at least the RAID 1 for audio files.

Buy an extra external HD to do another regular backup.

raywan

RAID Management --> RAID 1 (Mirroring Disk)


External Backup Drive


Backup using Synchronizing Function

raywan

synology 411+II 比起710+性能更好，刚出不久。但处理速度的提升真是很容易感觉到，如果买就不要再买710+了。NAS这东西就象PC，换代很快，硬件不够班，再好的软件也……
411+II的CPU Dual core 1.8GHz， Ram 1G。
Andyhe 發表於 2011-8-20 08:34

同意最新出的 Synology DS411+ 比 DS710+ 看上去好似性能更好 (我的 DS710+ 是早於 2010年5月買入)

但 DS411+ 是 4 Bay (Dual Core for 4 Bay)

而 DS710+ 是 2 Bay (Single Core for 2 Bay)

但真正 Reading / Writing 的性能相若 (100+MB/sec)

CPU 增加了，但並無多大處理速度的提升啊 !



兩型號仍是現今 Synology 有售的產品 (DS710+ 仍未被替換掉)

用作純 Audio Streaming，究竟有無必要用 4 Bay ?

以我經驗，2 Bay (2TB x 2 RAID 1) 已甚足夠

DS710+ 其實性能已有多了，我甚滿意



如用作 Musical Streaming 以外用途則視乎個人需要作選擇

Synolgoy DS2411+ (12 Bay) / DS1511+ (5 Bay) / DS411+ (4 Bay)



我用 QNAP TS239 Pro II (2TB x 2 RAID1) + Synology DS710+ (2TB x 2 RAID1) + DS106 + External HDs 也已足夠了

不必用 4 Bay 的 NAS，分散開來用 2 Bay NAS + 外置 Backup 更實際有效，Data Loss 更低

raywan

DS411+ --> 2年保用

DS411+ --> 無得 Expand Storage

DS411+ --> 110.73 MB/sec Reading 105.48 MB/sec Writing



DS710+ --> 3年保用

DS710+ --> 有得 Expand Storage DX510

DS710+ --> 113+ MB/sec Reading, 102+ MB/sec Writing

真正可用性能 DS710+ 比 DS411+ 稍好如 Reading Speed，故 DS710+ 及 DS411+ 的性能相若

不要只睇 CPU 的多少，實際性能及合乎自己所需更重要

fansullivan

Although, the QNAP interface is not as user friendly as Synology,

the QNAP  ...
raywan 發表於 2011-8-20 07:04

我仲未加到條path來放file, 現在要係browser打192.168.xx.xxx來入佢個介面
佢個介面要逐個file upload 我想好似用電腦咁整個folder搬過去

raywan

我仲未加到條path來放file, 現在要係browser打192.168.xx.xxx來入佢個介面
佢個介面要逐個file upload{:5 ...
fansullivan 發表於 2011-8-20 09:34

Try to use the QNAP Finder --> Map Network Drive

番薯

為可大家不用 RAID 5？

raywan

為可大家不用 RAID 5？
番薯 發表於 2011-8-20 11:42

RAID 1 Explained
The RAID level 1 architecture uses the concept of mirroring. This means that errors and failures of all disks can be accommodated in the disk array, except one. However, there can be maximum two disks only. RAID 1 is designed for faster read operations than write. RAID 1 recovery is only possible when one of the two disks have failed. While using any modern multi-threaded operating system (Windows or Linux), RAID 1 array gives better performance for split seeks, that is, access of same memory location by two different users. There needs to be a RAID 1 controller for each disk in this array for best performance.

RAID 5 Explained
In the architecture of RAID 5 disks, the array is so arranged that failure of one disk can be kept hidden. If the second disk fails before the replacement of the first, then there cannot be any data recovery. The maximum number of disks that can be accommodated in the architecture are three, out of which one is kept as a backup. When the first disk fails, the backup disk springs into action and data recovery is possible. In RAID 5, a failed disk needs to be replaced as early as possible. RAID 5 performance suffers whenever there is a read-modify-write operation.

Recovery in RAID Disks
RAID 5 as well as RAID 1 have one common assumption. Every failure is independent of the other. However, this is not completely true. Due to the mechanical nature of the storage disk, failure of one disk may mechanically be dependent on the other. There are techniques such as, parity resynchronization or stale sub-disk recovery, where recovery is possible but these are restricted to specific scenarios. Data loss due to software reasons (a virus or accidental deletion) is however a different issue. The data recovery techniques used in RAID disks and recovery through data recovery softwares are not directly related.


Advantages of RAID 1

    Redundancy of the data is hundred percent.
    Data need not be rebuilt in case of a single disk failure.
    Even though there are two disks in the array, the rate at which data gets transferred is that of a single disk.
    Very easy to understand and implement.


Advantages of RAID 5

    RAID 5 has an inbuilt load balancing mechanism.
    RAID 5 is ideally suited for database applications which are heavily read oriented.
    Applications that perform random read operations work well on RAID 5.
    High fault tolerance typically requires additional disk space. RAID 5 is highly efficient in that scenario.



From my opinion, for storage of important data, RAID 1 + External Backup(s) is better than RAID 5.

Please note, there are many stories about RAID 5 single disk failure and ending up the data is not able to recover.

The choice of RAID 1 and RAID 5 is yours.



I have RAID 1 for original audio files with external backup by  
(1) External HD
(2) Another NAS with RAID 1

Hence, double or triple security on minimize the potential data loss.