Enable DMA on a raid arry?

I am just wondering if there is a way to enable Dma access for a raid arry? I am able to set the primary and secondary IDE channels to DMA or PIO, but have not found any settings to enable DMA for the raid arry. I have two WD 80 gig drives set up in a raid 0 and was just wondering if you can setup DMA for the arry?
MSi 845PE MAX2
ATI 8500DV AGP card
Maxtor 160 gig on IDE1
DVD rom master/ DVD-RW slave IDE2
2 WD 80 gig drives on seperate raid controllers 3&4

My guess is that it is enable already. But, to play safe, install this:
Intel® Chipset Software Installation Utility
from
http://www.intel.com/support/chipsets/inf/

Similar Messages

K8N Neo2 strange behavior with SATA enable DMA transfers

K8N Neo2 with Maxtor 6B250S0 250GB SATA drive on SATA3 and Maxtor 6B200S0 200GB SATA drive on SATA4. No RAID. I use SATA3/4 because I have read that SATA1/2 are not locked with the PCI bus. I do overclock a bit. I have SATA1/2 disabled in the bios.
The 250GB drive is for my applications, and the 200GB drive is for holding backups. I use Drive Image 2002 to create image files of my partitions. To create an image of my main partition, Drive Image boots to DOS. I noticed that the drive performance under DOS was slow. After a bit of testing, I discovered that enabling DMA transfers for SATA fixes the problem. This makes sense, because under Windows the IDE drivers provide DMA access, but under DOS the hardware itself needs to provide DMA function. But here is what's strange... I have to enable DMA for both SATA channels! So even though I am using only one of the channels, and have the other disabled in the bios, I have to enable DMA transfers for both channels in order to have good performance under DOS.
This occurs under both 1.4 and 1.5 bios versions. This isn't a big problem and appears to be just a bios bug of some sort, but I thought I would post my findings here in case someone else is getting poor performance under DOS.
BTW, does anyone know why these options default to disabled in the bios?

BTW, does anyone know why these options default to disabled in the bios?
It makes sense when windows and the drivers provide it .
But not e.g when installing an OS or doing dos based or windows preinstall enviroment imaging .
I have also thought it's strange they have it disabled at default .
Atleast they should be enabled with "load optimized defaults" .
Just something we have to be aware off i guess .
This is one of the bios entrys i always ajust when starting with a default bios load .
Nice tip about having both enabled , wasn't aware of that .
Just been having the habit of enabling both 1/2 and 3/4 each time even if ports are used or not .

Can't enable DMA on cd rom drive

Hey,
How could I get my CD ROM drive, recognized as /dev/sr0, to get Direct Memory Access enabled?
The reason for this is when I use mplayer to read from an audio CD, the cache gets emptied pretty fast (and without it, audio is too choppy to listen to), and I'm guessing enabling DMA will make it run smoothly.
After some searching I tried 'hdparm':
hdparm -d /dev/sr0
And I get:
/dev/sr0:
HDIO_GET_DMA failed: Inappropriate ioctl for device
Any help would be appreciated!

Thanks for the swift reply.
Here's the result:
[pilgrim@archie ~]$ mplayer cdda:// -cache 8192
MPlayer SVN-r34426-4.6.2 (C) 2000-2011 MPlayer Team
181 audio & 384 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing cdda://.
Can't open CDDA device.
Failed to open cdda://.
Exiting... (End of file)
When I manage to get it playing I'm running:
[pilgrim@archie ~]$ sudo mplayer -cdrom-device /dev/sr0 cdda:// -cache 8192
MPlayer SVN-r34426-4.6.2 (C) 2000-2011 MPlayer Team
181 audio & 384 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing cdda://.
Found audio CD with 20 tracks.
Cache fill: 0.00% (0 bytes)
Track 1
Cache fill: 19.91% (1669920 bytes)
rawaudio file format detected.
Cache not responding! [performance issue]
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 44100 Hz, 2 ch, s16le, 1411.2 kbit/100.00% (ratio: 176400->176400)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 8.7 (08.7) of 4454.4 ( 1:14:14.3) 0.6% 13%
Notice how just 8 seconds in, the cache dropped from 20 to 13, and it won't refill... it just keeps emptying until I get the choppy behavior again. I think making the cache huge would be a workaround but maybe there's a better solution.
Last edited by pilgrim689 (2011-12-26 19:33:38)

Slow Data DVD Burning, Cannot enable dma mode, takes 20 mins to burn 700mb

so yea, i got a brand new comp. a dv7t-2200. it should burn a dvd as fast as my moms 400$ acre. but nope. so far hp has sent me a new dvd drive, no fix. from doing research i should enable the dma mode in the device manager under the ap-something controller, but there is no primary or 2ndary controller. there is only Intel(R) ICH9M-E/M SATA ACHI Controller thats all. can someone help here? this is really annoying. and im using windows explorer to burn the file to dvd. there just movies but they should burn in about 4 mins compaired to 20. is there any way to enable dma some how or to fix this problem? please let me know ne help would be great

I have the same problem, plus i can assert that EVEN the usb burner il slow and the system seems slowed itself (like as having dma disabled).

Help, can't enable DMA

I am running a MSI Neo Platinum and I went to my Device Manager (XP Home) to click where you can enable DMA, and there was no box to do this.
Will an updated driver fix this? How do I enable DMA when my pc currently won't let me.

Quote
Originally posted by hacker
Hi painiac,
I believe that since 98SE, any drive will automaticaly be set to it's highest PIO or DMA setting.
Could be wrong, but remember reading that in a help question when trying to the same thing you are trying to do many moons ago.
You are correct. The DMA is set to auto config ALWAYS, the only other possible change is to manualy select PIO

Can't Enable DMA for My Ide Drives

I am using Msi 865PENeo2 with P4 2.4C which I Just bought a week ago.
when i install the Enable DMA Drivers from the CD bundled with the mainboard.
MyPc will not reboot back to windows again and can only boot back to windows when I start on safe mode
Pls help

This was an error displayed on my screens saying that my operating system is not currently supported by the install package
Any other ideas besides changing the OS coz I'm using Win 98 ?
How do I install a new OS without reformating and deleting my mp3 files
Thanx anyway for guiding me so far.This is my last post on this topic.Hope you will have trouble free computing and overclocking.

Can't enable ACLs on a RAID volume

Hi all,
I have OSX 10.4.11 running on an Xserve G5 ppc. There are 2 Xserve RAID volumes attached by fibre channel.
I've been having issues recently with permissions: some users are creating or modifying files/folders and other users in the same group are then unable to access them. Viewing the permissions shows that group access is set to 'None'. I can correct this in the 'Sharing' section of WGM but that doesn't resolve the underlying issue.
I want to use ACLs to control access to data on the 2 RAID volumes, one of which also contains the users' network accounts. Unfortunately the 'Enable Access Control Lists' tick box is greyed out so I cannot activate them. On the other RAID volume all three tick boxes are available.
Why might this be?
John.

Found the answer. The volume was not correctly formatted. I copied the data, reformatted the volume, copied back the data and enabled ACLs.

Can't enable DMA !

Hi,
I buy a X52P DVDROM Combo unit and installed it on IDE 0 slave (with
IDE 0 master my 80 GB HDD) and cannot enable the DMA in the Control
Panel-System-Device manager-CDROM ? And changed after on IDE 1 master, but the same happ....ens
WHY ????????
Did this unit don't support it ? I can't believe this because I have
CDROM's 8 yeard old which allow the DMA to be activated !!! On IDE 1
master I have a CDROM, and on IDE 1 slave I have other CDWRITER (both
with DMA activated)
What's up ?
Thanks a lot.
Best regards,
L.
P.S. I have a via motherboard and installed the latest Via 4in 1
drivers; PIII 800Mhz. !

Quote from: Frankenputer on 10-December-04, 09:26:18
Give system specs as well as the OS you are using. As erydos stated XP does this automatically. If in bios you only have "Auto" and "Disabled," choose "Auto." If you are using XP and want to see if you are using DMA, go to device manager and check the properties of each of the IDE channels under IDE ATA/ATAPI Controllers. You'll see a tab labled "Advanced Settings." Mine has for the following for the Secondary IDE channel(optical drives)
Device 0
Device Type...................Auto Detection
Transfer Mode................DMA if Available
Current Transfer Mode....Ultra DMA 4
Device 1
Device Type...................Auto Detection
Transfer Mode................DMA if Available
Current Transfer Mode....Ultra DMA 2
I have Win98SE ! What to do now ?
L.

Disk Utilities -- how to enable Verify on XServe RAID

Could someone please post details on how to get Disk Utilities' Verify function to be enabled for use on XServe RAID?
When I try it, DU reports "disk is busy", and wants me to "unmount" the drive I've selected. The unmount button fails, and separately using the umount command appears to work but Verify still gives same message.
What am I missing?
Mac OS X 10.3.9, Dual G4 XServe, 2 x 7 x 260 G XServe RAID.
Thanks,
Graham
Many Mac OS X (10.3.9) Many

What you're missing is that there are files on the
XServe RAID that are in use. You'll need to quit
whatever processes/applications are using files on
the RAID before Disk Utility can repair it.
Thanks for the comment, but how do I solve this:
a) How do I determine who or what has files open on the affected partition?
b) Do I need to make sure the entire RAID set is not in use, or just the one partition ("Volume" as it appears in Finder) I want to run DU on?
Thanks,
Graham
Many Mac OS X (10.3.9) Many

Re: Primay IDE channel Transfer mode is set to PIO mode - Enabling DMA Stat

Hi
I have installed Xp Professional Recently on my desktop ...
My Primay IDE channel Transfer mode is set to PIO mode...even if i try to change to DME if available its not changing....
I tried a option to run a VB script to change the DMA status but no luck..
Can anyone help me know if any option is available to change the DMA status
Regards
sunny.

Hello suneel
Sorry to interrupt this discussion but I feel it goes somehow in wrong direction.
If I understand you right you just want to install WXP on your Satellite A300. Am I right about that?
On this forum you can find, I believe, hundreds of threads with precise description how to do this.
What you need is WXP installations CD with integrated SATA driver.
Check please this page . There you can find nice description how to find SATA drivers. At the end you can also find link to guide for "Slipstreaming SATA driver into WinXp boot cd using nLite".
When the WXP is installed just continue with WXp driver installation. If your notebook is WXP supported you can find them on Toshiba download page.
Hope this helps.
Good luck!

Can't enable DMA mode with JMicron controller

Working with this 975x is like pulling teeth.
Why does the secondary PATA port have to be the Jmicron POS?! How can I get it to just use the intel controller?
DMA won't work for my DVD drive hooked up to the secondary ATA. I have it set to DMA if available, and it keeps using PIO mode.

Quote from: dejanos on 21-November-06, 21:28:38
I suggest that you read all other post about the JMicron issues where lots of things are explained .We have already discussed about showing DMA under SCSI.SCSI doesn't inform you about the DMA.It simply works,or not.
So it's that simple,if your DVD/RW drive read an burn fast, then everything is OK. Don't worry about the DMA.
Yes, I can confirm that also, for what it is worth. I set up my new board some days ago but hadn't really tested the DVD drive yet. Although I felt and suspected everything was normal, I was very concerned after seeing and reading the problem threads on these boards. I have now tested it with a full 4.7GB burn and it took 13-14 minutes on a 4x DVD+RW, which is completely normal. Also, on checking the Nero log I see it reports "DMA: OFF" which is clearly false, but which a lot of people are complaining/worried about. Copying between hard drives (see specs) 'seems' to go at the right speed too. Windows reports 2 minutes when I dragged 3.12Gb across (quick test to see time although I cancelled it half way - not sure of the maths but seems about right from experience)
Obviously Nero (and probably other applications) are NOT able to detect the true access mode of IDE drives under the JMicron controller.
My specs:
P965 Neo-F
2x512MB Corsair 533Mhz
Asus 7600GT
320Gb SataII Western Digital (JMicron)
IDE:
Lite-On SHW-160H6S DVD (master)
200GB (slave) Spinpoint
Bios: 1.5; JMicron: supplied CD - 1.7.1.0 from device manager

P985 Platinum DMA issues

Does anyone here know if there's some trick to enabling DMA on this board? I am having 30min+ burn times for my cds! I look at the secondary IDE controller and it says PIO mode. When I switch it to DMA if available and reset my computer, it still reads PIO only. I installed the INF drivers, the JMicron drivers, uninstalled the controllers then reinstalled the drivers. I just can't seem to get it to work! I don't think I've ever run into this issue before. Here are my specs:
MSI P965 Platinum
Core 2 Duo 6400
1GB Kingston DDR2 800
NVidia Geforce 7600GT
(2) Seagate 80GB SATA
Lite-On DVD+-DL
Memorex 52x CDR
Thanks,
Tyler

Install RAID JMicron drivers.

Dma support with CF-Card

Hi there:
I have a problem here. I can't enable DMA with my 2gb CF Card (Sandisk Ultra 2.0). Its connected to the IDE Port and Archlinux with Kernel 2.6.28-ARCH.
hdparm -d1 /dev/sda1 just returns
/dev/sda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
HDIO_GET_DMA failed: Inappropriate ioctl for device
I know that DMA is supported by this device, here is the output from hdparm -vI /dev/sda:
/dev/sda:
IO_support = 0 (default)
readonly = 0 (off)
readahead = 256 (on)
geometry = 249/255/63, sectors = 4001760, start = 0
CompactFlash ATA device
Model Number: SanDisk SDCFH-2048
Serial Number: 014212E2907A1203
Firmware Revision: HDX 4.04
Standards:
Supported: 4
Likely used: 4
Configuration:
Logical max current
cylinders 3970 3970
heads 16 16
sectors/track 63 63
CHS current addressable sectors: 4001760
LBA user addressable sectors: 4001760
device size with M = 1024*1024: 1953 MBytes
device size with M = 1000*1000: 2048 MBytes (2 GB)
cache/buffer size = 1 KBytes (type=DualPort)
Capabilities:
LBA, IORDY(may be)(cannot be disabled)
Standby timer values: spec'd by Vendor
R/W multiple sector transfer: Max = 4 Current = 0
DMA: mdma0 mdma1 mdma2 (?)
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* CFA feature set
Its running on a Via Motherboard, i think i loaded the right chipset modules. IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686, Module is /lib/modules/2.6.28-ARCH/kernel/drivers/ide/via82cxxx.ko, but this did not change anything. I also tried to include some kernelline commands, but they also didnt help.
There are some other "errors" appearing on boot:
Mar 8 03:06:03 media sd 1:0:0:0: [sda] 4001760 512-byte hardware sectors: (2.04 GB/1.90 GiB)
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write Protect is off
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
Mar 8 03:06:03 media sd 1:0:0:0: [sda] 4001760 512-byte hardware sectors: (2.04 GB/1.90 GiB)
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write Protect is off
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
Mar 8 03:06:03 media sda:<3>ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
Mar 8 03:06:03 media sda1
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Attached SCSI removable disk
Mar 8 03:06:03 media sd 1:0:0:0: [sda] 4001760 512-byte hardware sectors: (2.04 GB/1.90 GiB)
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write Protect is off
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
Mar 8 03:06:03 media sda: detected capacity change from 0 to 2048901120
Mar 8 03:06:03 media sd 1:0:0:0: [sda] 4001760 512-byte hardware sectors: (2.04 GB/1.90 GiB)
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write Protect is off
Mar 8 03:06:03 media sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
Mar 8 03:06:03 media sda: detected capacity change from 0 to 2048901120
Do you have any ideas how i can enable DMA with this card and remove this messages from booting?
Thank you all very much
andieh

I have three CF cards installed in my computer, each is an adata 266x UDMA capable 8GB.
I utilize IDE to CF card adapters for utilizing CF cards in my system or SATAII to CF cards adapters.
I obtain 45MB/sec sequential speed on all three adapters.
These are UDMA capable CF cards, not just DMA.
Currently, I utilize all three CF cards in a raid0 arrangement using a dual pci-e to SATAII adapter to two CF adapters and a single pci-e adapter to SATAII and a CF adapter as well. The three perform at 45MB/S and 130 MB/S in the raid array.
Each card is identified as an sd(x) card.
Kernel is the latest to date.
DMA utilization may limit your speed to less than 20MB/s and IDE operation with an adapter from pci performs well with UDMA.
I realize I haven't addressed your particular problem directly but I find that in the latest kernels a pci to IDE adapter permits full performance from CF cards whereas using the mobo IDE slot does not...probably due to libata inclusion in the kernel. YMMV

Raid 1 setup NEO2 Platinum

I am having questions about the BIOS settings for a RAID 1 mirroring array.
I went through the manual and tried this once....I used to create the array, which shows as 'healthy'...I have the SATA drives plugged into sata3 and sata4
QUESTION 1...Since this 2 disk array is to be my boot disk, do I configure the array to 'Yes' under the set boot column? I assumed yes...
QUESTION 2...In BIOS, what are the settings for the RAID mode...In integrated peripherals, in IDE function setup...I have sata1/sata2 DMA transfer and sata 3/sata4DMA transfer disabled (is this supposed to be enabled?)
QUESTION 3.... In BIOS, ONboard device...sata 1/sata 2 and sata 3/sata 4 are all enabled...in Raid config...IDE Raid is enabled, sata1-4 are all enabled....Is this correct?
The reason I ask is because I booted with CDROM winxp pro, pressed F6 to load raid drivers on floppy, press s and loaded drivers, and again for the second set...then the disk formatted to a single partition, and installed 100% of the files (including the ones on the floppy)...then while I was away for a minute, and came back the screen was on the (press S part again...like it booted off of the cdrom again (although i hadnt pressed f6) I pressed enter to continue and it booted back to post....I dont have windows xp loading off of the drives like its not booting an OS...the OS didnt load like windows normally does (with minutes left...etc) so I know that something messed up.
QUESTION 4...once this is done....is the boot priority set to hard drive going to be the raid 1 array that I configured? I am not there yet but ...
THanks
MZ

OK..
I set the BIOS to the suggested settings (most were ok already)...I had followed the SATA link as suggested...that is what I had done already. THese are 2 drives brand new system, never formatted.
What is happening now is, after and installing the drivers , and the screen shows windows setup at the top and at the bottom, "setup is starting windows" it is just hanging there...nothing has happened for 10 minutes..just hanging. The 4 led's on the d-bracked are all green, the cdrom was working to load the initial boot off of winxp.
What do you suggest now? I tried this 3 times now with the same ' hanging ' result.
I also deleted, and cleared the array and rebuilt the mirror..
By the way, my initial post still stands, the 1st time I did all of this this hang didnt happen and the formatting and file loading were successful, but then the sytem didnt begin installing the OS.
Please help...I RMA's an ASUS board and switched to this one hoping the setup would be easier...ouch
MZ

Msi Ms-5169 Dma

MS-5169 mobo with AMD K6 111 400MHz. Installed LITEON 52x cd/rw and copied an audio cd (back-up)at 52x in 25mins!!!!!!!! Thought the slowness might be due to not being able to enable DMA for the cd drives (Win98 Device Manager). Cd DMA in BIOS set to normal, although there is an option for Turbo).
Any ideas welcomed!

Hi Sharmane,
Many thanks for your response. Will give your suggestion a try. The system belongs to a friend of mine, which I previously owned. Until she decided to add the cd writer, it was all she needed - that's women for you.
Regards,
Raydelay.

Enable DMA on a raid arry?

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