U-dma 133 Problem

[bastieh]

Hi there,
just bought a new HD (Samsung sp1614n), which is capable of u-dma 133 as well as the 7njs and the cable i use. problem is, that the bios detects it as ATA 100 and i can't get it higher than that.
anyone knows how to solve this?

by the way:
i'm using lumberjackers modded full raid bios 0915 with striped raid.
the new HD is single master on IDE 1.

thanks in advanve...

[IOL master]

NO such thing a 133. It is just a Maxtor marketing gimic. You are running at full speed

[soltys]

[IOL master]

Unless this is serial ATA there is no such thing a normal ATA 133. It is nothing more than hype from Maxtor. I have a Maxtor drive that is rated at ATA-133 and it runs at BIOS default of UDMA 5. Untill you go to SATA you will not get ATA-133. If the drive in question is in fact serial, I appolgize. I am not familiar with that drive. It did not sound to me like a SATA drive. Just normal IDE.

[soltys]

There IS such thing as ata 133. It's been since revision b of ata/atapi 6 standard was published (27-02-2002). Check documents at T13. Every harddisk that is rated at udma6, will run at udma6. This includes maxtor, samsung, wd and every other vendor that makes ata133 disks. Serial ata has nothing to do with it.

If your bios detects ata133 disk at ata100, it means there's some sort of incompatibility/problem/whatever else between/with bios and disk, or most probably - a little too old chipset. But don't say that ata133 doesn't exist, because it's not true.

[~SAG~Raiden]

I have three 133 maxtors and they all say udma-6 in the bios.

when I put them on an adapter for sata the adapter made the promise chip think they were udma-5.

the 133 standard was not widely accepted in the industry because sata150 came out around the same time.

use the maxblast software from maxtor to see if the drive is set-up to run at udma-6. If you don't have it you can get it from their website.

Also: If 133 is hype then it is hype from a lot more companies then just maxtor! such as: MSI, Chaintech, Asus, Gigabyte,......etc.....etc....!

[IOL master]

Hmmmm. MSI, Chaintech,Asus, Gigabite, etc. I could have sworn they did not make hard drives. I cant't understand why they would be used in the same sentence as Maxtor. I asked this same question over at Sudhian.com forum and over there everyone agrees that there is nothing to the ATA-133 or the ATA-100 spec. There are no hard drives that use the normal IDE channels that are capable of bursting more data than what can be carried on the ATA-66 pipeline. the 100 and 133 are theoretical limits, nothing more. Most hard drive makers use the ATA-100 spec and there is no data available that suggests that Maxtor drives are any faster or can transfer data faster than other brands. So, to quote the moderator at Sudhian.com. "Operating at ATA-100 will give the same real life performance as ATA-133"

If any of you can point me to data that proves that a hard drive designated ATA-133 transfer more data in a second than one that is designated ATA-100 I would like to pass that on to the gang over at Sudhian. They will be very interested.

[soltys]

Well, I checked that forum - you got two replies, both of which are true afaik:

regarding questions in first reply:

1) - does xp support udma133 ? no, at least not the standard default ide driver. THAT's why there's ide-in-the-box nv's driver, which adds udma6 timings.
2) NF2 - yes, NF1 - no
3) if he thinks about udp packages, then yes.

regarding second reply:

Of course - hardly ide drive can READ data requiring more than ata-66 interface. But udma0-6 and older timings don't tell you about how fast drive can read from plates (internal speed). They tell about speed that can be achieved between harddrive and controller (external - interface speed). Today - fastest IDE drives can read at +/- ata-66 timings from the beginning of the disk. What will happen if you put two such drives on single pata cable ? This is where ata-133 comes in handy.

Documents - as you wish:

"Ultra DMA data burst timing requirements", page 152 (document page):

click

esepcially T2cyctyp, which is sustained average two time cycle.

Also look at the page 3 (acrobat page) for documents' changelog.

[mhungry]

Although we use terms like ATA-100 and UDMA-5 interchangeably, they do NOT stand for the same things. It's actually theoretically possible for a drive to be ATA-100 or 133 compatible, but only UDMA-2 enabled for example. UDMA is between the HD and the system, and is usually what the system sets up. the ATA specification is the maximum burst speed of the platters.

I just ran into this myself... My NF2 chipset can take on UDMA-6 (ATA-7) drives with no problem.. I have one already running in UDMA6.

So I recently bought another one.. 100gigs.. on sale for $20 after rebates. It's a maxtor DiamondMax 10, and it claims it is U-ATA/133. However, the drive will NOT boot into UDMA-6 like it should. Instead, when running Maxtor's own Maxblast utility (in boot CD mode), and looking at the specs, I found out that the drive is ATA 2-7 capable... but only UDMA 0-5 capable... where'd the UDMA-6 support go? That's the only way the ATA-7 mode means anything...

So I've contacted Maxtor about this because this is clearly false advertising... if the package says ATA-7 capable.. and they even add the word Ultra (which doesn't really mean anything in terms of ATA anyways)... it follows that the interface must support UDMA-6 in order for the advertised transfer speeds to happen. So we shall see what they reply with.

Honestly anything beyond ATA/66 doesn't really mean a lot anyways... My 16x DVD burner runs on ATA/33 UDMA-2 mode... at full speed... and that's a HUGE amount of bandwidth.

[bebi71]

Download the HDD utility from samsung's site. It will let you change from ata100 to 133. It cames from factory with 100 enabled for compatibility with older boards.
I have too a Samsung HDD, I've enabled 133 and it works really fine.
You can find the utility at
http://www.samsung.com/support/productsupport/download/Model_Select.aspx?type=HDD&typecode=300300&subtype=HDD&subtypecode=300301&model=SP1614N&filetype=SW&language=