Query on IDE ATAPI interface

Hi fellas,
Here's some challenging issues for you:
I've heard a lot of different opinions on the deal with the connection of two drives per IDE 40 pin cable (Master/Slave) with the IDE/ATAPI interface. According to one school of thought only one device on the cable can accessed at any one time (although at lightning fast speeds so it seems both are in use).
Another school of thought says both run concurrently but only the Master device runs at premium bandwidth, or that when both are in use they degrade the performance of each other (which could be bad if CD-burning).
The most recent view I've heard, which I suspect is true, is that both devices on a cable run concurrently without bandwidth loss but that the limiting factor is the speed of the slowest device, ie if you have a UDMA 100 drive (Mode 5) and a UDMA 133 drive (Mode 6), as I do, on the same cable the higher speed drive is brought down to the slower speed drive's level, in effect (in this case) two UDMA 100 drives. The IDE controller on the motherboard however has no problem handling the extra data bandwidths. This view seems to hold water because I checked the DMA settings during bootup (notes a UDMA 100 Mode 5 and a UDMA 133 Mode 6 device) but after boot lists both as Mode 5.
Can any of you confirm the correct answer here? And in any case does it matter, doesn't the difference between say a UDMA 100 drive and 133 only come down to a percentage point or two of real performance anyway? I have heard drive controller buffers (esp. more than 2 Mb) on the drives themselves are more important for performance than bandwidth.
Whilst on the topic of hard drives does anyone know if it is (ultimately) detrimental to partition hard drives with more than one partition, esp. if you make alot of littler ones? I have heard that anything other than one big partition (eg on a x Gb drive an x Gb size partition) will "wear out the tracks". This argument ties into another question about low level formats and whether we can really do low level formats with those utilities on manufacturer's web sites or if its just another type of high level format only better or fancier. Isn't it true that due to modern drives being so incredibly high tech they can only be low level formatted once, and only then with the advanced gear they have at the factory (lasers? Sealed vacuum chambers? - all wild guesses here).
Your feedback on these issues is, as always, very much appreciated.
Thanks.

Both run at the same time but with a 40pin wire IDE cable there is more interference as both signals have to share the same wire. Thats why they made 80 wire IDE cables.
You can have two devices on the same cable, one running 100dma and one running at 33dma. But that causes a lot of interference as one device is running on a faster transfer rate.
Thats why it is recommended you have cd drives and hard drives on different cables.
And hard drives, the more partitions you have the slower it becomes.
The tracks are magnetised and de-magnetised so over time they do wear away.
I agree with your last bit.
It is not possible to do a true low level format as it is what determines the physical properties of the drive which is set by the manufacturers. So a low level format is only done once.
Some programs call a full write zero a low level format but it not really.
Read this bit from maxtor’s website
https://maxtor.custhelp.com/cgi-bin/maxtor.cfg/php/enduser/olh_adp.php?p_faqid=235&&p_sid=bsjuUu6h&p_lva=
Is that ok for you

Similar Messages

Qill my mac accept any IDE/ATAPI interface DVD writer?

Hello,
I'm currently seeking to upgrade my Quicksilver's 1x Superdrive to a newer, faster DVD writer. I was looking at a Lightscribe 20x DVD writer to transform the painfully slow burning sessions into quicker put-on-DVD archival making.
+(RAW files take a lot of place on a HDD and slow burning sessions are now the weakest link in my workflow — a new DVD burner is a must until I change my whole computer somewhere in the following year...)+
Now since most online retailers provide only minimum information about their products, you generally know which versions of Windows will support the drive, but when it comes to Mac OS X... usually, there's nothing to confirm that the drive will work on a Mac or not!
Now the question is: will any IDE/ATAPI interface DVD burner fit in my G4 Quicksilver 2002 dual 1.0 GHz or do I need to look for a drive that specifically supports OS X? (Like an external USB / Firewire drive, for instance).
Any feedback on that would be much appreciated.
Thanks.

There is a database that holds users' experiences installing third-party drives in various Macs. If you have a drive or two in mind, you can enter the specific drive and read the reports:
http://forums.xlr8yourmac.com/drivedb/search.drivedb.lasso

Query in BPS Web Interfaces - Open in New Window

Hello,
I am trying to insert a BW Query into a web interface but have it launch in a new window. I know how to have it open in the web interface by using a text box. In July of 05 I found an answer from Marc Bernard on a similar topic, but with a query returning variables. When I tried to use the code, I got an error. I know that I can create a URL with Target="_Blank" but I don't want to hard code the full URL of the web report because the default host and port will change with the systems. I tried the following URL in hopes that would inherit the system but it doesn't work.
http://<default_host>:<default_port>/sap/bw/BEx?cmd=ldoc&infocube=EPABUDGET&query=EPA322BR
Here is the code I have for the report.   Can someone tell me how to open in a new window or how to get the URL to work?
<iframe
    id="BWReport01"
    name="BWQUERY"
    src="/sap/bw/BEx?cmd=ldoc&infocube=EPABUDGET&query=EPA322BR"
    width="900"
    height="800">
Frames are not supported.
</iframe>
Thanks,
Cherie

Hi Cherie,
you are on the right track. Just use a href="/sap/bw/bex..." target="_blank". If you need the URL to be more dynamic, use javascript with window.open.
Regards,
Marc
SAP NetWeaver RIG

Getting SQL*Net more data from client waits when running a query through web based interface

Hi, you all,
We are having this weird behavior when running query through web based interface, we get a lot of "SQL*Net more data from client" waits, the OEM indicates that the current wait event is SQL*Net more data from client
It's just a very simple query wich invokes a db link.
When I execute the same query on any PL/SQL tool like toad or sql developer it works fine, but that query inside an application executed through a web based interface, it hangs for ever.
Where can I start looking for the problem.
We are working on a 3 Node RAC 11gr2, both databases are on the same RAC.
Thanks.

Hi ,
we managed to reproduce the case in test environment, below are the steps:
1)have 2 databases on different machines, will call the first one local, the other one remote.
2)in the local database create:
a - DBLink to remote database.
b - read data from remote database(we simply used select count(*) from dummy_table )
c - insert data into a table on the local database
d - terminate the connection between the 2 databases (disconnect either machine from the network)
e - commit on local database.
what we noticed was the following:
1)when the local database is disconnected from the network(the machine is not connected to any network at the moment): almost immediately throws an error, and issuing the following:
select * from dba_2pc_pending;we found some data .
2) when the remote database was disconnected(the local database is still connected to the network):
after 7-8 seconds an error is thrown, and issuing the following:
select * from dba_2pc_pending;did not return any data.
since this is pretty similar to our case ,we concluded that it's a network issue.
is this the correct behavior ?
as a temporary solution till the network issue is fixed ,we did the following:
1) changed the call of the remote procedure to calling a local procedure that calls the remote procedure.
2) added pragma autonomous_transaction to the local procedure.
3) at the end of the local procedure rollback the autonomous transaction.
it seems that since the global transaction does not use the DBLink database does not issue a 2PC commit.
this works in my cases since the DBLink is only issed to read data.

IDE/ATAPI Controller (PCI) for Blade 1000 ?

Hi everybody,
I'm desperately seeking for a possiblity to add large storage capacity to a Blade 1000 workstation. I don't have this system yet, but I tend to buy it this week. As an alternative there would be a Blade 1500, which is full IDE/ATAPI. But the 1500 is offered with only 512MB, has only 4 memory slots and no option for a second CPU.
The Blade 1000 has only Fiber Channel, which makes it very expensive to reach ~200GB, as there is only space for two harddisks.
This leads to my question from the topic:
Does anyone know a PCI ATAPI-Controller which works in the Blade 1000 and is supported with Solaris / has drivers for it ?
Then I could run the OS from the FC disk and store all the data on the IDE disk.
Many thanks,
Ebbi

Hello Alexander,
<i>Does anyone know a PCI ATAPI-Controller which works in the Blade 1000 and is supported with Solaris / has drivers for it ?</i>
No, there are no PCI-ATAPI cards that are supported by Solaris SPARC.
<i>Then I could run the OS from the FC disk and store all the data on the IDE disk.</i>
That's the point, even if drivers are available for the PCI-ATAPI card, you would be unable to boot from the IDE-disk, due to the lack of support by the OBP.
<i>What also makes me wonder is that the specs of the 1500 say "Up to two 80 GB ATA100 IDE Disk Drives". Does that mean I cannot use larger harddisks than 80GB?</i>
Most likely these 80GB disk are the largest ones, that Sun ships for these systems. The System Handbook lists only components that Sun sells/supports.
There is a limit of 137GB for IDE-disks. This is caused by the 28-Bit LBA limitation.
A 120GB disk should work, even bigger disks, but only with a usable capacity within the above limits. Just search these forums for 160GB, a detailed procedure was given in former threads.
If the system is under support contract, adding non-Sun devices voids the warranty.
<i>Another possibility would be to connect an external firewire harddisk to the 1000.</i>
Solaris 10 has added support for USB and firewire storage devices.
Btw. Happy Birthday !
Michael

IDE/ATAPI Tape Drive: Support?

Hi Friends:
Does anyone know of a device driver/hack to allow IDE/ATAPI tape drives to work under Solaris 10? The BIOS recognizes the drive -- and I can also use the IDE/ATAPI SCSI emulation within Linux to write to the drive.
Is anything similar supported on Solaris 10?

I never have used an ATAPI tape drive.
But I do know that some tape support was added to the Solaris
USB kernel modules (e.g. with the S9-x86 patch 115554-19,
S10-x86 should have the same support).
An idea would be to try on the these USB<->ATAPI bridge devices
(external enclosure) and attach the ATAPI TAPE device to such a
bridge and use the thing as an USB tape drive.
Works fine with ATAPI CD/DVD writer devices. Since I don't own
an ATAPI TAPE, I've never tried such an USB<->ATAPI TAPE
device, but it might work.

BPS_WB-Can i add a query to a Web interface tabpage?

Dear experts,
In a BPS web interface application, i have already a tab page which allows users to input their data. Now i would like to add a second tabpage which allows to display the existing data.
Is that possible to link a BEX query to a Tabpage BPS web interface application? I would like that the query is launched and the result is displayed each time an user click on this tabpage.
Thanks in advance.

Include your query in a web template and follow the approach given in the link http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/a861d590-0201-0010-248a-fc70d8d29f26
Edited by: Deepti Maru on Nov 30, 2010 10:24 AM

How to parse BEX Query data to Flex interface via XML

Hi,
How can we pass the Bex Query data in XML tabular format so it can be consumed by a Flex interface?
And communicate back and forth.
Regards
Vivek

Hi,
May be this link is helpful to you,
http://help.sap.com/saphelpnw04/helpdata/en/d9/ed8c3c59021315e10000000a114084/frameset.htm_
All the Best,
Madhu....

Missing method to query a Proxy's interfaces list.

I need to query a Proxy object for its implemnting interfaces list (or array).
Following source code I see that Proxy class already detains the map proxyClasses indexed by the proxyClass that is used to check wether a class is a Proxy:
boolean isProxyClass(Class<?> cl)Following the same philosophy there should be also a method
Class<?>[] getProxyInterfaces(Class<?> cl)that returns the list of interfaces used to define the Proxy class.
This would be very useful to me.
Do you think this could be implemented, maybe already in the next builds of version 5 and/or 6 of J2SE?
Regards,
Marco.

Perhaps I am missing something. For any class cl if Proxy.isProaxyClass(cl) is true then would not cl.getInterfaces() give the list of interfaces that the class proxies?

Any ideas about interface problems on 2014.1.1?

On a fresh install of 2014.1.1 on a new macbook pro I am having interface problems. The Edge program locks up after a few minutes or the cursor won't show what's being selected, items disappear, sometimes get the "Save your work, error occurred" message and other odd interface behavior. Are there any known issues or likely culprits that might cause this sort of thing?

Thanks for jumping in. Yes, I've restored prefs and even uninstalled all (including prefs) and reinstalled. If it helps at all, I run several cloud apps (googledrive, dropbox, icloud, box, transporter, etc.). Other installed items include a Wacom tablet driver, latest Java, Flash player, Logitech mouse driver. Other than those the mac is brand new with no unusual system mods yet.
Appreciate any ideas.

Query Designer: Ideas how to calculate remainng weeks?

Hello!
I'm fairly new to BI, so bear with me...
I'm creating a query and I need to have a column that calculates a correction value for a weekly target value.
The general idea is a very simple logic. Based on previous year's net sales a 10 % increase is the target level for the current year. But if current sales are lower than the set target, I would need to create a logic that raises the target for the remaining weeks of the current year.
In other words, if 01.2006 the sales were 10, then the target for 01.2007 is 11. If sales in 01.2007 are only 9, the sales target has to be higher for the remaining weeks to reach 10 % yearly growth in sales. So the weekly addition to the target values for weeks 02.2007 - 52.2007 would be 11+(11-9/remaining weeks).
Any ideas on how to solve this in query designer? BI version is 7.0.
Points rewarded naturally!
Thanks in advance,
Antti

Hello Antti,
You have essentially done the hard part which is define what you actully need in your query.
My advice to you (and there would be many ways to do what you require) would be to create a "Calculated Key Figure"
So using your example your calculated key figure should be,
TARGET + (TARGET - ACTUAL / "REMAINING WEEKS")
REMAINING WEEKS I would create a variable, without going into too much detail here are two sites which I have found useful in the past.
http://help.sap.com/saphelp_nw04/helpdata/en/61/579b3c494d8e15e10000000a114084/content.htm
and
http://help.sap.com/saphelp_bw33/helpdata/en/f1/0a56a7e09411d2acb90000e829fbfe/frameset.htm
Hope this helps Antti
Regards
Ben

Query Need idea

Hi all,
I am new to BSP applications. in my task i have to take some action like on click event of the radiobutton, i have to call RFC function module for system and check whether the user is globally locked in that system or no. if it is not then i have to unlock the user and reset his pass word. i have function module ready but i don't know how to call this on click event of the radio button. so i want to start first with just pop up messages on the click event of the radiobuttons like this radio button is clicked or something.
Can anybody provide me some idea and please provide some sample code if possible.
Thanks,

Hi Dhwanit,
Please check below weblog for calling RFC function module through BSP
/people/thomas.jung3/blog/2004/06/23/bsp-150-a-developer146s-journal-part-iv-rfcs-and-the-bapi-browser
Check below thread for radio button
radio buttons..
Thanks!
Lakshmikandh

WISH upon a faded star - ideas for interface

I think it would be cool if there was a quicker way to see a layers opacity in the timeline window.
Such as fading each layers colored bar, so if the layer is at 100% opac, the bar looks regular, and if its at 0%, the bar looks like it does when you trim off the end of a clip. Or perhaps a 1 or 2 pixel line that runs along the bar at the top for 100% and at the bottom for 0%.
Often I have a layer that comes on does something, then fades off for a long while, and then comes back again; and it would be nice to have a quick visual reference to see what it is doing without having to lose precious vertical space that could be showing me other layers instead of the channel.
Speaking of which, it would be really cool if you could click on the name of any property and drag it onto the bar, and those keyframes would always appear on the bar, even when you minimize the layers properties. And if said property is a percentage, like opacity or scale, it could have the line to show where it is at...
Basically, I just want more ways to see what layers are doing, and how they time with each other, without the wasted vertical space of the color bar and the property.

The primary "practical value" of these ideas is conserved vertical work space. For anyone who often works on a laptop, without the benefit of a second monitor, it gets pretty annoying to constantly be scrolling up and down in your timeline window trying to align various layers that you cant see at the same time.
I tend to think that an opacity fade on the layer bar is more an extension of the current model for trimmed areas, than in collision with it; but really I think the idea of a thin horizontal line drawn between the top of the layer bar for 100% and bottom for 0% would be a clearer visual cue of what the layer was doing. Opening the opacity keyframes doesnt necessarily tell you what they are doing. You know where they are, but if there are a lot of them it can be difficult to keep track of which ones are up, down, and in between; and again you're now using 2 vertical slots to display 1 piece of information. The idea is not to have to move your timeline marker to verify layer 1 is synced with layer 12, because you can quickly see that it is. Simple things like opacity fades are fast, but not if they coincide with a bunch of other crazy stuff happening on other layers.
As for dragging a property onto the layer bar, layer markers could be displayed on top of the keyframes. I was picturing that you would only be able to display one property at a time, which should probably be labeled at the left edge of the layer bar; but now that you mention it, multi colored keyframes for various properties might be useful (but likely confusing as well). Users won't get tired of always dragging stuff because they wont be. Work flow would be just as it is now, except that if you decide it would be useful to have some property readily viewable/accessible, you would have the option to do so, without losing any of that precious vertical space...

Ide/atapi Dvd-+rw Problems !

okay i had msi 5.03 drivers installed my dvdrw drive wont read any disc nor write
my samsung cdrw would work just fine !
firmwares are upgrades !
then i upgraded to 5.10 drivers w/ ide installed same problems ..
i went back to MS IDE drivers but the dvds i burned were currupted (both drives can read data)
however the MS IDE drivers made my hdd very slow .. searching mp3's from winamp libs and playin them would make them hang which was v annoyin..
now i dont know what to do :( (dvdrw drive works fine on my other system(intel))
i read other threads in which they say dont install ide-sw .. i selected the IDE drivers and then after next it would ask me to install ide-sw or not ! so am i not even suppose to tick the ide driver on the main screen or what !
i cant just make this work :(

Quote
Originally posted by Supershanks
However that won't solve ultimate11's problems as he's tried both.
ultimate11, you can mix and match:-
Have your IDE 1 using nvidia pata
& Ide 2 using microsoft drivers.
How are you ide ports being used, ie
IDE 1 Master ??????
Slave ??????
IDE 2 Master ??????
Slave ??????
ide 1 master = samsung cdrw/dvd , slave = iomega dual dvd rw
ide 2 master = seagate 120gb , slave = seagate 80gb
like i have said earlier even while i have uninstalled everything dvdrw burns currupt disc .. cdrw is workin fine ! .. and my ide hdd are v v slow

Server 2012 - VSS Event ID 8194 - Unexpected error querying for the IVssWriterCallback interface. hr = 0x80070005 Access is denied

I'm seeing an error popping up in the application log on both nodes of my Server 2012 cluster. The events seem to occur when DPM begins a system state/bmr backup of the node. The DPM Backups usually complete successfully, but over the course
of a sync or consistency check this event might appear 8-10 times in the application log of the cluster node. The event reads:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="VSS" />
<EventID Qualifiers="0">8194</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2013-05-13T05:15:50.000000000Z" />
<EventRecordID>11424</EventRecordID>
<Channel>Application</Channel>
<Computer>node1.domain.com</Computer>
<Security />
</System>
<EventData>
<Data>0x80070005, Access is denied.
</Data>
<Data>
Operation:
Gathering Writer Data
Context:
Writer Class Id: {e8132975-6f93-4464-a53e-1050253ae220}
Writer Name: System Writer
Writer Instance ID: {c9b83054-b318-4486-a5aa-6c36b591b3f8}</Data>
<Binary>2D20436F64653A20575254575254494330303030313330302D2043616C6C3A20575254575254494330303030313235342D205049443A202030303030313631362D205449443A202030303031353238382D20434D443A2020433A5C57696E646F77735C73797374656D33325C737663686F73742E657865202D6B204E6574776F726B53657276696365202020202020202D20557365723A204E616D653A204E5420415554484F524954595C4E4554574F524B20534552564943452C205349443A532D312D352D3230</Binary>
</EventData>
</Event>
If I run 'vssadmin list writers' after the backup job completes, all writers report their state as stable with no errors.
I came across this error recently when trying to troubleshoot another issue, but looking back, I can see that these have been going on for a while. The first instance I see occurred in early March.
Any suggestions on what I can do to clear up this error?

Please checked the ACLs:
Takeown /f %windir%\winsxs\temp\PendingRenames /a
icacls %windir%\winsxs\temp\PendingRenames /grant "NT AUTHORITY\SYSTEM:(RX)"
icacls %windir%\winsxs\temp\PendingRenames /grant "NT Service\trustedinstaller:(F)"
icacls %windir%\winsxs\temp\PendingRenames /grant BUILTIN\Users:(RX)
Takeown /f %windir%\winsxs\filemaps\* /a
icacls %windir%\winsxs\filemaps\*.* /grant "NT AUTHORITY\SYSTEM:(RX)"
icacls %windir%\winsxs\filemaps\*.* /grant "NT Service\trustedinstaller:(F)"
icacls %windir%\winsxs\filemaps\*.* /grant BUILTIN\Users:(RX)
net stop cryptsvc
net start cryptsvc
Then please verified:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\VSS\VssAccessControl
NT AUTHORITY;NETWORK SERVICE;LOCAL SERVICE are set to 1
TechNet Subscriber Support in forum |If you have any feedback on our support, please contact [email protected]

Query on IDE ATAPI interface

Similar Messages

Maybe you are looking for