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 Post subject: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 8th, 2007, 9:55 
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Joined: August 2nd, 2007, 5:13
Posts: 13
Location: UK
Does anyone know the physical layout of the LBAs on a Seagate 250GB SATA DB35 Series 7200.3 with Part Number 9BK13E-655?

I need to know how many LBAs there are on each physical track (esp the zone containing LBA 0), number of heads, zone boundries and how the head switches (i.e. does it switch through all heads on each track then increment track, or does it stay on one head incrementing the track until the end of the zone and then switch heads?)

Thanks.


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 8th, 2007, 10:27 
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Joined: May 1st, 2005, 10:12
Posts: 93
hi stt,i think that Series is 7200.8

Interface task reset
4096k x 16 buffer detected
TONKA - 1_Disk S.00 02-01-05 09:34
Head Mask FFFF - Switch to full int.
Spin Ready
3.01B 02-01-05 09:39
(P)PATA Reset
Master

T>x

Head 00
Zone 00: 00018 - 02E27 1320 (0528) 824.516
Zone 01: 02E28 - 05C8F 1320 (0528) 824.516
Zone 02: 05C90 - 07F47 1276 (04FC) 807.097
Zone 03: 07F48 - 0A14F 1246 (04DE) 787.097
Zone 04: 0A150 - 0BDAB 1210 (04BA) 761.290
Zone 05: 0BDAC - 0D2A3 1173 (0495) 741.935
Zone 06: 0D2A4 - 0E79B 1144 (0478) 722.177
Zone 07: 0E79C - 10767 1100 (044C) 688.065
Zone 08: 10768 - 11EC7 1045 (0415) 662.463
Zone 09: 11EC8 - 13E0F 990 (03DE) 626.267
Zone 0A: 13E10 - 15F93 924 (039C) 586.707
Zone 0B: 15F94 - 17CCB 880 (0370) 551.613
Zone 0C: 17CCC - 19247 825 (0339) 525.484
Zone 0D: 19248 - 1A26F 792 (0318) 505.645
Zone 0E: 1A270 - 1B68B 748 (02EC) 480.000
Zone 0F: 1B68C - 1CAD3 704 (02C0) 451.815

Head 01
Zone 00: 00018 - 02E27 1320 (0528) 824.516
Zone 01: 02E28 - 05C8F 1320 (0528) 824.516
Zone 02: 05C90 - 07F47 1276 (04FC) 807.097
Zone 03: 07F48 - 0A14F 1246 (04DE) 787.097
Zone 04: 0A150 - 0BDAB 1210 (04BA) 761.290
Zone 05: 0BDAC - 0D2A3 1173 (0495) 741.935
Zone 06: 0D2A4 - 0E79B 1144 (0478) 722.177
Zone 07: 0E79C - 10767 1100 (044C) 688.065
Zone 08: 10768 - 11EC7 1045 (0415) 662.463
Zone 09: 11EC8 - 13E0F 990 (03DE) 626.267
Zone 0A: 13E10 - 15F93 924 (039C) 586.707
Zone 0B: 15F94 - 17CCB 880 (0370) 551.613
Zone 0C: 17CCC - 19247 825 (0339) 525.484
Zone 0D: 19248 - 1A26F 792 (0318) 505.645
Zone 0E: 1A270 - 1B68B 748 (02EC) 480.000
Zone 0F: 1B68C - 1CAD3 704 (02C0) 451.815

Head 02
Zone 00: 00018 - 00F0A 1265 (04F1) 796.774
Zone 01: 00F0B - 03683 1246 (04DE) 787.097
Zone 02: 03684 - 050B7 1232 (04D0) 777.419
Zone 03: 050B8 - 075AB 1210 (04BA) 760.645
Zone 04: 075AC - 09A74 1173 (0495) 740.323
Zone 05: 09A75 - 0B0CB 1144 (0478) 721.659
Zone 06: 0B0CC - 0D7C3 1100 (044C) 687.097
Zone 07: 0D7C4 - 0F1F7 1045 (0415) 661.935
Zone 08: 0F1F8 - 11466 990 (03DE) 625.513
Zone 09: 11467 - 13379 935 (03A7) 591.202
Zone 0A: 1337A - 15490 880 (0370) 551.613
Zone 0B: 15491 - 16DC2 825 (0339) 525.000
Zone 0C: 16DC3 - 17EE4 792 (0318) 505.161
Zone 0D: 17EE5 - 194E5 748 (02EC) 479.032
Zone 0E: 194E6 - 1ABBD 704 (02C0) 451.320
Zone 0F: 1ABBE - 1C066 660 (0294) 417.339

Head 03
Zone 00: 00018 - 02873 1320 (0528) 824.516
Zone 01: 02874 - 055E5 1276 (04FC) 807.097
Zone 02: 055E6 - 07DED 1246 (04DE) 787.097
Zone 03: 07DEE - 0A355 1210 (04BA) 761.290
Zone 04: 0A356 - 0B9CF 1173 (0495) 740.323
Zone 05: 0B9D0 - 0CCD7 1144 (0478) 722.177
Zone 06: 0CCD8 - 0EE4F 1100 (044C) 688.065
Zone 07: 0EE50 - 1051D 1045 (0415) 662.463
Zone 08: 1051E - 123F5 990 (03DE) 626.267
Zone 09: 123F6 - 14153 935 (03A7) 591.532
Zone 0A: 14154 - 15FD7 880 (0370) 551.613
Zone 0B: 15FD8 - 170E7 836 (0344) 533.138
Zone 0C: 170E8 - 18125 806 (0326) 512.903
Zone 0D: 18126 - 1935B 770 (0302) 489.677
Zone 0E: 1935C - 1AB25 715 (02CB) 458.065
Zone 0F: 1AB26 - 1B5F9 660 (0294) 417.618
Reserve: 160A1 - 161CE 713 (02C9) 466.452
Total KBAs = 1D490CBE
Age=50 Type=15 MxCyl=1CAD3 MxHd=3 MxSct=528 BSz=2000 TCode=05050204
1> VALID Cert Disk Code Detected - Revision # .091
T>
RL:03FD
AL:03E6
SL:0200

RD:0400:0010
WR:0410:0010
FM:0420:0010
AD:0420:0014
BA:0430:0003
ST:0433:0001
AC:04B3:02A6
DP:04B3:02A6
AS:0434:007F
SC:0759:02A7

logbps :0200
codebps:0200

uP:3FE0
MZ:3FE0


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 8th, 2007, 10:33 
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Joined: May 1st, 2005, 10:12
Posts: 93
BTW other info of this hdd are:
DB35.1 Consumer storage
modle: st3250823ACE
S/N: 3ND0PHZ0
P/N:9AG283-625
Firmware: 3.01
Date Code: 06386
Site Code:AMK
Product of Singapore
if have some helpful to you
wawalab


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 8th, 2007, 10:49 
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Joined: August 2nd, 2007, 5:13
Posts: 13
Location: UK
Thanks wawalab, that is the type of info I was after. Is there a good tool for extracting this info?

The unit I have in front of me is definately a DB35 Series 7200.3. I can only assume the 3 is the CE generation (unit is from a PVR), but if I didn't have it sitting on my desk I would be more inclined to believe it should be 8 given current Seagate generations. The unit date code is 07037.

Do you know whether when the unit is reading the first 32GB (2E27h x 528h x 4) it will read all the info on head 0, then switch to head 1, 2 and finally 3 (as the 160GB DB32.2 does), or if it will read all the data on the first track on heads 0 to 3, and then increment the track?

Do you know if all Seagate HDDs follow the same algorithm for LBA numbering, or will some switch heads each track, while others read all data on head 0 zone 0, then head 1 zone 0 etc?

Regards


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 8th, 2007, 11:13 
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Joined: January 29th, 2005, 22:58
Posts: 637
Location: Canada
Translator on Seagate works by N tracks where N << tracks per zone.
So, it reads tracks 0..N from Head0, tracks 0..N from Head1, N+1...2N from Head0, N+1..2N from Head1 etc.
N from my experience is usually between 20 and 50.
So, if N=30 in your case then it would read 1320*30=~39600 sectors from Head0, then ~39600 sectors from Head1 etc.


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 8th, 2007, 12:00 
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Joined: August 2nd, 2007, 5:13
Posts: 13
Location: UK
Thanks again, that info should be enough to let me carry on testing.

The head switch algorithm you describe is a little different from what I was told about the 160GB DB35.2 model. The information I was given (from a normally reliable source) was that the first 17 million LBAs were on head 0, which with 1414 LBAs per track on that model meant the head 0 read up to track 12000 before head switching.

Perhaps I misunderstood and need to go back and verify this info.


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 8th, 2007, 15:29 
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Joined: January 29th, 2005, 22:58
Posts: 637
Location: Canada
Do you have Data Extractor?
You can verify that by yourself.


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 9th, 2007, 8:50 
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Joined: August 2nd, 2007, 5:13
Posts: 13
Location: UK
I do have access to Data Extractor (on PC3K I asume you mean) but never used it, so not sure how to get this info. Had an attempt to run it but did not get the screens I expected to (as per the manual), and nothing that would show me any information on the physical layout. Any hints on useage would be appreciated.

Teh version of PC3K I am using is 2.27 and Data Extractor 1.23.1. The PC3K does not automatically recognize the model of Seagate HDD, which may be an issue.


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 9th, 2007, 10:17 
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Joined: January 29th, 2005, 22:58
Posts: 637
Location: Canada
You have to connect terminal, run Seagate utility, Ctrl-Tab to main screen and run DE. Then create new task in DE with Make Data Copy option selected, then go to Task params and create a head map for this drive using Active utility.
If you really need this info you will figure it out how to do it.


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 Post subject: Re: Seagate DB35 Series 7200.3 250GB SATA physical layout
PostPosted: August 9th, 2007, 11:23 
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Joined: August 2nd, 2007, 5:13
Posts: 13
Location: UK
Thanks, I'll give it a try when the PC3K is freed up.


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