What is the right speed for sata raid?

Blackmagic Design

What is the right speed for sata raid?

Posted by Octavio Gasca on February 17, 2007 at 4:57 pm

Hello!
IS anybody can tell me the average speed for a good configurated sata raid?

The Blackmagic speed test give me these readings:
Read rate; 55.6 Mb/s
Write rate; 80.1 Mb/s

I think is very slow speed.
I’m working with a 4 x 400Gb Western D, 7,200 rpm, 16Mb cache, 3ware controller card on raid 0, under Windows XP, 3Gb of ram.
I’ll thank you in advance any ideas.

Octavio Gasca
Imaginaria.tv
Chihuahua, Mexico

Margus Voll replied 19 years, 5 months ago 3 Members · 4 Replies
4 Replies

Bob Zelin
February 17, 2007 at 11:15 pm

you are correct – this is very slow. Your internal SATA drive on your MAC will give you about 55-60mb/sec, and this is one single drive. 2 SATA drives stripped RAID 0 should give you over 120mb/sec. Modern hi speed eSATA arrays from Cal Digit, Sonnet and others will be above 180 – 230mb/sec.

I suggest that you test one drive at a time. You will see that if you stripe 2 drives together, you should get a dramatic increase in speed. As you add drives, it will get faster.

Bob Zelin
Margus Voll
February 22, 2007 at 6:05 am

Hi.

Maybe the 400 gig drives are not so fast at all ?

There might be problems when you do not configure from 3Ware web based UI or bios UI and use
windows disk manager to do it.
I have 3Ware SATA 9000 series and i’m pretty happy with it on SD jobs.

I have 4 SATA seagates at 320 gigs and with 16 mb chache.
I get 64,2 read and 98,3 write.

Also 3 gigs of ram might affect it maybe?

—

Margus

https://iconstudios.eu
Octavio Gasca
February 24, 2007 at 2:53 am

Hi!
Thanks for your advice.
I have a problem with the BIOS configuration, the raid dissapear from it. There’s a manual instruction, could be a bad harware installation, but I change the raid card to another slot, right behind the video display card, but without positive results.
For this same reason I can’t try the individual hardrive testings, as Bob Zelin says.
Why do you think the 3 Gb o f ram affect?
Do you think I have to reinstall the raid?

Octavio
imaginaria.tv
Margus Voll
February 24, 2007 at 10:19 am

Hi.

What would i do is i would back up my raid drives content.
Reformat drives and rebuild it in RAID BIOS not in motherboard.
There is a difference.
If raid is missing from its bios then it yes might be broken.

What i also wanted to point out that there is 2 generations of 9000 series 3Ware raids.
I also have older wersion and it might be that they do not go as fast as the newer ones.
If you work with SD then there is no point to race about speed …. you got plenty.

I also sugsest if you need more speed go with CalDigit.
I will 🙂
They have impressive raids.

—

Margus

https://iconstudios.eu

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