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How Fast is your SATA Raid Read/Write Rates? Post your speeds here
We just built a SATA Raid with (8) Hitachi SATAII drives and the Sonnet card running in Win/xp.
Our Read rate in the Decklink utility is 393 mb/s read, with 443 mb/s write.
We still need to upgrade the bios of the Hitachi drives to increase the throughput.Any other suggestions?
Please post your rates here.
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9 Replies
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Hi,
Can you please fill the disk array to about 80% full and then run the test again. Empty disk array results are usually impressive but you need to know how much the disk array will slow down as it becomes full.
It would be great to see postings from other people about their SATA disk arrays and it will be even more useful if they can indicate how full the disk array was when running the test.
Another factor worth knowing is whether SATA or SATA II disks are being used. We’ve just received a new SATA disk array and so I hope to post some results soon when we’ve finished configuring it.
Regards,
Luke Maslen
Blackmagic Design -
If you want fast SATA disk use Western Digital Raptor 74GB 10000RPM HDD, with only two disk
in RAID / motherboard controler / I have 186 mb/s read and 86 mb/s write ( disk is about 70% full ). -
We have the RocketRaid 1820A with 8 250Gb Sata drives Maxtor
The 1.81TB is 40% full
Here’s the speeds:Data read rate 443.9 MB/s
Data Write rate 442 MB/s -
Wow! That’s impressive.
Are you running Mac OS X or Windows XP?
Regards,
Luke Maslen
Blackmagic Design -
Win XP
Dual Xeon 3.2 with 4 Gigs of Ram on Supermicro motherboard.
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this is raid0 right?
not raid5?-Kaspar
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My experience from last year (when the RocketRAID 1820a card first came out) here:
https://www.squeezeanickel.com/SATA/SATA_RAID.html
This is a 4-drive RAID 0
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Yes SATA raids can give great single stream results, but try multiple streams.
On my 4 disk riad using diamond max (I think) I know they are the 16 meg buffer 300 gig drives with a rocketraid 8 port card I am well over 200 megs/ sec.
I am however not able to do 3 streams uncompressed 8 bit, or 8 stream of DV (not testsed with multicam)
I can get 7 or 8 streams of DV from 1 internal SATA drive (G5 2.7, 4 Gigs ram, Kona 2)
Using FCP multicam, the sata raid 0 could nto reilably play back 8 streams of DV using multicam for a coencert film I am doing. However, my Huge systems dualmax dusl scsi ultra 160 (even with a Ul3d @33mhz is able to play them back with far fewer problems. (and no the 33mhz card was not in the systems the same time as the rocketraid was.
Anyone else found multiple streams to suffer on sata raids?
Please post what you are getting? BTW my test for multi stream (before FCP5’s multicam) is simply scaling down clips and placing next to each other with no other filters, ect in RT extreme aaf full quality with “warn if dropped frames” on
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I have 4 200GB Western Digital SATA drives RAID 5 on a Rocketraid 1820a controller.
Drive is 70% full
161MB/s Read
80MB/s writeI have a spare attached to another channel and two more of the channels run to an external 2 drive RAID 0 made from 2 250GB Seagate Barracudas. My projects are backed up to this drive once an hour and speeds are:
112MB/s
108MB/s
Drive is 60% full
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