Inside a Hitachi DK329H-91WC 9.1GB SCSI Hard Drive from 1999

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Having any failed five-platter drive is always a sad moment, but particularly for such a rare SCSI unit from Hitachi in their pre-IBM merger days.
I made quite a few different angles on this one, since the actuator locking mechanism is quite interesting. Sorry for the third clip being a little shaky.
Drive Attributes
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Hitachi DK329H-91WC
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Capacity 9.1GB
Mfc Date 1999-03
Format 3.5"
Interface SCSI (SCA)
Platters 5
Heads 10
Cache 512KB
RPM 7200
Protocol Ultra-2 SCSI
Origin Philippines (HCP)
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As usual, I went into more detail about this drive on my site post, which you can find here (with pictures): bananahdd.nl/i...
Thanks for checking out the video.
All content on this channel falls under Creative Commons CC0 licensing. Accreditation is preferred, but not necessary.
Date of recording: 2023-05-09

Опубликовано:

5 окт 2024

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Комментарии : 19

@bigbluebananabread Год назад

Pictures/close-ups: bananahdd.nl/index.php/2023/05/09/hitachi-dk329h-91wc-9-1gb-1999/

@Jones5121 Год назад

gotta love the sound of BLDCs struggling to spin up five (or more) platters, so satisfying

@bigbluebananabread Год назад

100% agree, it sounds so cool! I'm sure the 18GB ten-platter variant of these must sound insane!

@charlesswenson259 Год назад

The sound of hard drives spinning up reminds me of my grandpa installing a love of PCs unto me in the mid to late nineties.

@bigbluebananabread Год назад

Glad it brought such nostalgia! The feeling certainly keeps this hobby alive :)

@cdos9186 Год назад

What a treat it was to see this one shown, sad that it is failed though. My first time ever seeing the inside of one of these, I always wondered, and they are very fascinating to see internally. Everything from the design, label they used, and internals, all very well thought out and was really a nice drive when working. As always, at least you had a opportunity to document this one and fully show it and its beauty inside, another very attractive drive and I certainly was glad to see you took the time for all the angles in the video. Keep up the good work! After all, you are documenting history finally after all these years of nothing really being shown online, at least widely available in terms of these drives. I have quite some rarer models I would like to show as well, thank you for motivating me to upload content too, makes me happy to preserve the sights and lost sounds of these drives : ))

@bigbluebananabread Год назад

I'm glad you enjoyed seeing the insides! I'm still quite bummed this one is dead, since I really wanted to hear how the seek-test sounded (and if it's like later Hitachi SCSI drives). Either way, I totally agree that this has a really interesting internal design! As you can tell, the screw covering label preservation didn't go so well on this one... ah well. Thanks for the kind words though, I'm really glad that showing off some of these fairly obscure drives has an audience at all! Can say much the same about the documentation you cover on a lot of these drives, since seeing inside is always very fascinating alongside being great historical preservation, as drives like these become almost extinct. Very curious to see the rare models you'll be showing off in the future!!

@windisk1112 Год назад

@@cdos9186 Was discussed in the server.

@cdos9186 Год назад

@@bigbluebananabread I agree for sure, having it failed is not a pleasant thing to hear upon powering it on for the first time. I really am curious as to how it sounded as well. Hopefully you can get a working example in the future if one shows up, would be looking forward to it as always. Yeah the label preservation isn't always successful lol some are just a tough cookie to get off. Yes the documentation on these is a great thing and no problem, I will try my best to do the same. It is fairly sad however how some models still seemed to be wiped off the face of the earth, glad to see some of them re-emerging from the shadows of forgotten times. I wish the same for you, although you always seem to have the rare one's lmao.

@MyComputerStudios_ Год назад

You got the SCSI equipment for these?

@bigbluebananabread Год назад

This just needed a startup signal, so I was able to use an older controller to start it up. However, I did recently acquire an LSI20320IE card which is pretty perfect for these. I do expect to be able to record some of the previously demo'd (and a few others I haven't recorded) SCSI drives I have at some point, but time off work will have to allow for it again, since I just recorded a load of videos to cover the currently quite busy period.

@にゃんこ-o9z Год назад

🌏I like hard drive👍

@mima85 Год назад

It looks that there's something wrong with the 2nd and 4th platters. When the disk spins they shake, like if they warped, and the drive for sure is not happy about that. Did the drive took a hit?

@bigbluebananabread Год назад

Yeah, they are certainly quite wobbly looking... I've pulled apart a few similar-era models in the past with similarly wonky looking platters that worked fine prior to spontaneous failure, so I have no idea of the consequences in this case. I wish I knew the history of this one to confirm, sadly it was from an enterprise liquidation lot with a bunch of other drives so I have no clue what sort of horrors it went through! It's definitely a huge shame.

@mima85 Год назад

@@bigbluebananabread Yeah, that's strange indeed.

@NelsonBigGunP200Fan Год назад

Thats a cool drive! Reminds me of the older seagate scsi drives. That is a interesting headlock mechanism too. Too bad that it failed! Bad heads ?

@bigbluebananabread Год назад

Totally agree with you! It's quite strange how similar the top plates look compared to similar SCSI Seagate's of the period. The locking mechanism is quite interesting, I haven't seen this exact layout on other drives before, so it's pretty cool I agree. Unfortunately I'm not quite sure what went wrong with this one, I really wish I knew too!

@ringostarvair4621 Год назад

how did you connect it to your pc? via usb port or with its proprietary scsi controller. please answer me i have the same disk and i would like to use it.

@bigbluebananabread Год назад

For this video I just needed a startup signal, so I used an old mid-90's SCSI controller to start it up. However, for actually using this era of SCSI drives I use an LSI20320IE PCI-e card with an SCA to 68-pin SCSI adapter. I can recommend that if you wish to use one of these. There are a few older cards that also should work fine of course, so I wouldn't limit it to just that one, but you do need proper termination. (or an old machine with support, I test these on an old IBM server of mine!)