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 文章标题 : 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 11:51 
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我的raid卡是Adaptec SCSI Card 39320-R,如图,官方资料: http://www.adaptec.com/en-US/support/sc ... C-39320-R/

我打算组raid10,用alternate cd, destop live cd安装全部检测成单独的4个硬盘的情况下,我在网上查找资料发现,hardware raid和software raid不是一般是否硬件软件这么区别,大部分人都认为有raid卡,就属于hardware raid。请问一下各位高手,我这个卡到底是hardware raid还是software raid?

引用:
Be careful, unless you get a high end RAID card you will get a controller that masquerades as hardware RAID but is actually software. Unless you get a RAM specification with it and a pricetag to match it won't really work. I just got a SATA Raid controller for about €35. It's excellent, supports up to 4 sata devices on 6 ports. But although you configure the card in a bios like screen, it is still software raid. Suse 10 identified it as such and warned me. I can see the two disks seperately. If this was hardware RAID this would be impossible.

Anyway moral of the story, software raid in linux is pretty good. you don't need a special controlller, though seperate channels would be nice. Even if your distro goes belly up, you can still use the software raid as the partitions are tagged as raid even before the formatting. If the controller you're looking at says it supports only RAID 1, 0 or 1+0 (10) then it is most likely not hardware raid. Hardware should support a minimum of RAID 5.

Have you looked at LVM? If you are just looking at combining to discs it's great. Plus you can add to it and subtract (?). There is no redundancy but if a disc fails the others are unaffected. I have two 320GB disks in an LVM volume on this server as I type.

Good luck with it, if you have any more questions I can answer, I hope I can help.


另外,我听说,如果是硬raid,安装过程中是不会把组好的raid检测成4块单独的硬盘,而且能很简单的完成整个过程,和一般的安装差不多,是这样的么?

我在adaptec的官方论坛又找到一句这样的话:
引用:
No, the Ultra160 SCSI cards are not capable of hardware or software level RAID.

SCSI controllers that are capable of hardware RAID are listed at:
http://www.adaptec.com/en-US/support/raid/#scsi_raid

出自:http://ask.adaptec.com/scripts/adaptec_tic.cfg/php.exe/enduser/std_adp.php?p_faqid=9990&p_created=1063097322&p_sid=V6O_a3lj&p_accessibility=0&p_redirect=&p_lva=4945&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PWRmbHQ6MSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9OTMsOTMmcF9wcm9kcz0wJnBfY2F0cz0wJnBfcHY9JnBfY3Y9JnBfc2VhcmNoX3R5cGU9YW5zd2Vycy5zZWFyY2hfbmwmcF9wYWdlPTEmcF9zZWFyY2hfdGV4dD1oYXJkd2FyZSByYWlk&p_li=&p_topview=1


发现hardware raid列表中并没有我的这款Adaptec SCSI Card 39320-R,更加坚定了我区分他们的不是硬件和软件的概念。


图片


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2 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 15:26 
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很多兄弟把电脑里装一块阵列卡组成的阵列也说成是硬阵列,这可能是因为Windows磁盘管理中可以把几个硬盘合并为一个虚拟硬盘来使用的缘故,而把Windows式的阵列看成是“软阵列”,而用阵列卡组成的阵列因为多了一个硬件(阵列卡)而把由阵列卡组成的阵列说成是“硬阵列”。其实,这两种阵列都是软阵列,他们都受CPU的控制,都不能独立运行而要先启动Windows系统才能运行,不能热挺拔等。

硬阵列功能强大,一般大中型系统才使用。硬阵列一般都是把磁盘放在一个专门的柜中,我们称之为磁盘柜,磁盘柜本身就有完整的控制系统。硬阵列还有一个与软阵列最大的不同就是一个硬阵列可以同时接多台电脑,就像一个硬盘上接了两台甚至多台电脑一样,多台电脑同时使用同一个硬阵列,这是软阵列无法办到的。


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3 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 15:51 
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看来这个卡应该是软raid的。


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4 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 18:27 
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HostRAID is an integrated RAID technology that adds entry level RAID support. It is also called intelligent RAID on chip (iROC) or software RAID and it is built into the firmware of the controller. There is no additional RAID processor on HostRAID cards.


software RAID :em20


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5 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 18:30 
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引用:
Fail to install ubuntu 7.10 on an adaptec HostRaid array
Hi,everyone.

I try to install ubuntu on an IBM IntelliStation Z pro, there are two scsi hds in the machine, and there is an adaptec hostraid array controller on the board , it is an fakeraid array.

I have make an RAID0 array and have an Windows XP installed.

And now I want to install ubuntu 7.10 on the fakeraid array without remove the XP.

I found this article "My Ubuntu (7.10) Installation" , and I follow the article to install ubuntu.

Everything seems fine before I type the "shutdown -r now" command.

But after the computer is rebooted , ubuntu can't not recognise the raid array, it seems that the dmraid didn't work, ubuntu still sees two hds.

Did anyone konw how to deal with this problem?

I have tried Fedora 8, it is quite easy to install Fedora 8 on my computer,no need to install other software to support the raid array, but still I want to try ubuntu.

Can someone tell me what to do?

Or is it ubuntu 8.04 support fakeraid like fedora do?

Thank you very much!
Last edited by StevenSolid; January 12th, 2008 at 10:26 AM..
StevenSolid is offline Reply With Quote



引用:
Boot your Live CD and post:
sudo fdisk -lu


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6 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 18:36 
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FakeRAID is not supported by Ubuntu. Trying to install Ubuntu on such a partition could easily result in the loss of all your data.


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7 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 18:41 
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引用:
Looks like dmraid doesn't support Adaptec or Intel-RAIDs. Sorry, I don't know any other solution :/


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8 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 18:54 
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引用:
eware of Adaptec's term "HostRaid": This means fakeraid, not real hardware RAID. Adaptec offers proprietary drivers (binary-only).


fakeraid
:em20


最后由 relaxssl 编辑于 2008-12-11 19:19,总共编辑了 1 次

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9 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-11 18:55 
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http://linuxmafia.com/faq/Hardware/sata.html


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10 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-12 15:20 
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引用:
Subject
---------------------------------------------------------------
is Adaptec SCSI RAID 2230SLP supported in Ubuntu 8.04?


Discussion Thread
---------------------------------------------------------------
Response (Dave Ross) - 12/11/2008 03:49 PM
Hello from Adaptec,

This message is in response to your questions concerning driver support for the Adaptec ASR-2230SLP in Ubuntu 8.04.

Ubuntu is not officially supported with this product and we do not have any prebuild rpms or img driver files available for download for this specific version of Linux.

We do have source code available for download that you might be able to use to compile your own driver.

This source code is available at the link below.

http://www.adaptec.com/en-US/downloads/ ... ID+2230SLP

You may be able to check the Ubuntu forums to see if any other users have been able to use the Adaptec ASR-2230SLP in your specific build of Ubuntu.

If this reply did not answer your questions or you need further assistance please contact us.

Thank you for using Adaptec.



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11 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-13 2:48 

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软卡, 没有内存(缓存),另外硬卡其实在装linux的时候和软卡一样也是认成多块硬盘的


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12 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-16 17:20 
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ryoohki 写道:
软卡, 没有内存(缓存),另外硬卡其实在装linux的时候和软卡一样也是认成多块硬盘的

硬raid也是,你确定么?


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13 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-21 23:37 
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HostRAID 是一种把初级的RAID功能附加给SCSI或者SATA卡而产生的产品。它是基于硬和软RAID之间的一种产品。它把软件RAID功能集成到了产品的固件上,从而提高了产品的功能和容错能力。它可以支持RAID 0和RAID 1。


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14 楼 
 文章标题 : Re: 请问Adaptec SCSI Card 39320-R组的是hardware raid还是software raid?
帖子发表于 : 2008-12-22 11:26 

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relaxssl 写道:
ryoohki 写道:
软卡, 没有内存(缓存),另外硬卡其实在装linux的时候和软卡一样也是认成多块硬盘的

硬raid也是,你确定么?

不认成多快硬盘的话,首先,对于磁盘的监控不利,其二,在有磁盘出现异常的情况下怎么替换硬盘?不论磁盘是否支持热插拔要替换硬盘首先要在系统上卸载要被替换的硬盘的,否则会对数据造成损坏的,只有一块硬盘你卸载哪个?本来磁盘容错的基本要求就是要保证系统在运行的情况下对损坏的部件进行更换,根本不能停机的,只有一块硬盘;你一卸载整个系统都down了


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