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Should I use two drive IDE RAID instead of expensive SCSI?

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1893
#1 02-8-26 17:45

Should I use two drive IDE RAID instead of expensive SCSI?

Should I use two drive IDE RAID instead of expensive SCSI?

> It was suggested to me by some AV friends that instead of using a
> SCSI drive for audio, it would be better (and more cost efficient)
> to run two EIDE drives off of a PCI based raid card...the drives
> are so much cheaper and the rpm's are not as critical since the
> speed is doubled....anyone out there doing this....or have any
> problems with this?

Date: Tue, 28 Aug 2001
From: Jason Kelton
Subject: RE: LAW Raid EIDE

Well its possible, but then again, how many audio channels do you want???

I have 16 simultaneous tracks running, with about 30 plug-ins enabled. My CPU is like 80-100%, but my disk IO is sitting at around 5% on a single 20Gb IDE drive. You could go IDE RAID (Yes it increases performance, allows you to create single partitions from multiple drives and things load quicker), but then again, you could always consider SCSI RAID with a big onboard cache on the drives :)

SCSI has its benefits, particularly when doing multi-channel recording.

Playback, you'll rarely suffer whether you go SCSI, IDE, Raid or not......

12588
#2 02-8-26 18:40
其实RAID的作用不光是加大了硬盘缓存,同时读写和减少寻道速度。更重要的是,我们平常的硬盘读写都是要靠CPU来控制的。大家可能没有关心过,到底硬盘在我们进行多轨录音的时候占用了我们多少系统资源。其实,答案是:很多。而RAID其实代替了CPU这方面的工作。所有的读写操作,都有RAID的控制芯片来操作。大大的减轻了CPU的负担。这才是最重要的,上面那个回帖子的人说,他在播放16轨波形,挂了30个插件的时候,CPU就几乎满了,其实,有很大一部分是被硬盘占用了。

3618
#3 02-8-27 04:33
难怪轨数越多,硬盘灯闪得越厉害~~~cpu也自然也在消耗资源不停地读~~~

444
#4 02-8-27 08:47
SCSI的RAID硬盘读写都是不要靠CPU来控制的。但E-IDE的RAID硬盘读写还是要靠CPU来控制的。

12588
#5 02-8-27 10:49
最初由 zghmidi 发布
[B]SCSI的RAID硬盘读写都是不要靠CPU来控制的。但E-IDE的RAID硬盘读写还是要靠CPU来控制的。 [/B]


不是吧?RAID卡上不是有控制芯片吗?

444
#6 02-8-27 17:12
只有SCSI RAID卡上才有控制数据IO芯片,而且SCSI RAID卡还有缓冲内存,ide的RAID比单个硬盘CPU占用粒大,但0的模式下速度还是快了很多。
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