Hey that drive's to small for the drive bay!!! 
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Using Modern Hard Drives on Old Macs?
- Thread starter habibrobert
- Start date
WT . . . :?:
3.5" to 2.5" drive rails:Hey that drive's to small for the drive bay!!!
http://www.geeks.com/details.asp?invtid=HD-108&cat=HDD
One may be able to find a similar item on Ebay for less, but I know about these.
The electrical adapter shown is for IDE drives, and so not relevant to this thread's discussion, but it might come in handy for something.
) Personally I prefer the pan-style brackets that mount the drive from the bottom over the bracket style. The advantage is that there's room for rubber noise isolation bushings to make the drive really quiet. If you enlarge the holes in the pan slightly, you can fit rubber grommets in them and run the screws through those.
Yeah, it looks like a pretty heavy duty drive.
If it were put on a faster, more modern bus, it would probably just fly!
This is my first 10k RPM drive, by the way!
I also like that the date of manufacture is 2006. That means is shouldn't succumb to age related deterioration just yet.
c
If it were put on a faster, more modern bus, it would probably just fly!
This is my first 10k RPM drive, by the way!
I also like that the date of manufacture is 2006. That means is shouldn't succumb to age related deterioration just yet.
c
While too hot can cause problems, you don't want to go nuts with the cooling, too cold can apparently reduce life as well. I read a very interesting study a few years ago, just found a link to it. It's a study of hard drive failure statistics in very large server farms.
http://static.googleusercontent.com/external_content/untrusted_dlcp/research.google.com/en/us/archive/disk_failures.pdf
Interesting looking article about HDD failure, but I'm just playing today and that looks like a serious read. :
These new adapters I got don't work so well with the standard IIsi power cable, it wionds up being too short because the Molex socket on the adapter is on the opposite side as a standard SCSI HDD's. I was right about these adapters being exactly the same form factor as the @$$end of a low profile 3.5" HDD though, fits the profile of the HDD carrier like a charm, with just a tad of room for airflow left over.
Do SCA drives have active termination built in? For my only pair of 68pin SCSI II HDDs I have just one adapter with active termination.
I don't think I've had to deal with one little bit of SCSI voodoo using any of the Ultra Drives. :O
These new adapters I got don't work so well with the standard IIsi power cable, it wionds up being too short because the Molex socket on the adapter is on the opposite side as a standard SCSI HDD's. I was right about these adapters being exactly the same form factor as the @$$end of a low profile 3.5" HDD though, fits the profile of the HDD carrier like a charm, with just a tad of room for airflow left over.
Do SCA drives have active termination built in? For my only pair of 68pin SCSI II HDDs I have just one adapter with active termination.
I don't think I've had to deal with one little bit of SCSI voodoo using any of the Ultra Drives. :O
i may have discovered something funny with with these drives, seems like the termination from the external port is something these HD's need in order to boot. in some machines.
i Really Really thought i was booting my q700 /wo my external zip connected to the scsi port...
for the time being i cant get my q605 to boot /wo my external zip connected , Zip disk in or not.
like wise with the q700
gotta do more testing... = time ,
i Really Really thought i was booting my q700 /wo my external zip connected to the scsi port...
for the time being i cant get my q605 to boot /wo my external zip connected , Zip disk in or not.
like wise with the q700
gotta do more testing... = time ,
I also! I tried the new, low profile adapter as the internal drive in the SuperIIsi™ and got no joy. I had it on an internal cable along with the boot drive, dunno in which order, but that worked fine. Gotta look for my IDC50 passthru terminator for testing. I'll hang a DB-25 terminator off the @$$end and see what that does as well.
I'm looking into hacking one underneath the FDD, it fits great but for height and one rib interfering with the adapter card overhang on the PSU side.
Have you changed any of the default jumper settings on the adapter?
I'm looking into hacking one underneath the FDD, it fits great but for height and one rib interfering with the adapter card overhang on the PSU side.
Have you changed any of the default jumper settings on the adapter?
http://www.ebay.com/itm/Passive-SCSI-Terminator-DB25-Male-/140943145282?pt=US_Drive_Cables_dapters&hash=item20d0ddb942
Passive SCSI Terminator, DB25 Male
wonder if one of these would help?
Passive SCSI Terminator, DB25 Male
wonder if one of these would help?
I'm looking for mine ATM! 
edit: I found one that looks just like that, didn't help. I think the drive end needs to be terminated. If I can find my test harness, I'll give that a quick try tonight.
edit: I found one that looks just like that, didn't help. I think the drive end needs to be terminated. If I can find my test harness, I'll give that a quick try tonight.
Well, it's not the usual termination type SCSI voodoo as far as I can tell. I haven't found the active termination kluge cable, but I found the one with just an external connector on the multiple position cable.
Passive terminator on the external port = :?:
Passive terminator on the internal chain = :?:
Passive terminator on the external port and on the internal chain = :?:
In none of these termination configurations did the HDD spin up.
I'm guessing jumpers, there's something wrong with the default settings.
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I've got way too many adapters and one too many (both unmarked, one unformatted) drives laying about . . . :-/
______________________________________________________________________________________
Yep, pulling the jumper off the REM header enables drive spin up, so it's jumpers or something inherently wrong with the adapter. I remember trag mentioning something about adapters that he couldn't see provision for something or other to work. ISTR it being termination. These have a jumper labeled "TPR" and two more headers (10) than the ( 8) taller 8/16bit SCA adapters, so they should be fine. Given the correct settings for the two missing signals that must be(?) hardwired on the 8/16 SCA adapters, and any others that may be tweaked, we should be able to work this out. No docs came with the low profile, 8bit only SCA adapters we bought, but I've got the pinouts for SCA, Docs for the 8/16s . . .
. . . and a continuity tester!
I haven't actually gotten these low profile adapters to work yet, but the 8/16 definitely worked on the IIsi. ;D
Though I don't recall if I got the drive to work as the only drive in the system or not. :-/
Passive terminator on the external port = :?:
Passive terminator on the internal chain = :?:
Passive terminator on the external port and on the internal chain = :?:
In none of these termination configurations did the HDD spin up.
I'm guessing jumpers, there's something wrong with the default settings.
______________________________________________________________________________________
I've got way too many adapters and one too many (both unmarked, one unformatted) drives laying about . . . :-/
______________________________________________________________________________________
Yep, pulling the jumper off the REM header enables drive spin up, so it's jumpers or something inherently wrong with the adapter. I remember trag mentioning something about adapters that he couldn't see provision for something or other to work. ISTR it being termination. These have a jumper labeled "TPR" and two more headers (10) than the ( 8) taller 8/16bit SCA adapters, so they should be fine. Given the correct settings for the two missing signals that must be(?) hardwired on the 8/16 SCA adapters, and any others that may be tweaked, we should be able to work this out. No docs came with the low profile, 8bit only SCA adapters we bought, but I've got the pinouts for SCA, Docs for the 8/16s . . .
. . . and a continuity tester!
I haven't actually gotten these low profile adapters to work yet, but the 8/16 definitely worked on the IIsi. ;D
Though I don't recall if I got the drive to work as the only drive in the system or not. :-/
I woke up early, did some research and played in AI8 for a bit. I just did this by eye, I'll have to break out the continuity tester to check accuracy and buzz connections on the problem child . . .
. . . it's a start.
. . . it's a start.
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