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January 23, 2017

SD cards take a hand in 3000 storage

One of the most unpredictable hardware devices in HP's 3000 iron is its SCSI drives. Out in the user community one enterprising manager is trying to link the server to microSD cards. John Zoltak checked in with other users last week about the project.

SCSI2SDZoltak was simply trying to copy one 917LX disk to a new disk on the server's SCSI bus. A 4GB drive is standard on a 917, so just about any microSD card would match that storage. A bit of open source wizardry props up SCSI2SD, a combination of hardware and software. You can purchase an SCSI2SD card on eBay and in other Web outposts.

Zoltak didn't begin there, however. He was searching for an offline diagnostic tool to do the disk copying. "I want to copy the system volume sets, so using VOLUTIL is not an option. And at this point just how does anyone get the diagnostics passwords? My other choice is to attach the 3000 disks to a PC and copy there."

That other choice leads the way to SCSI2SD. Using PC-based disks, of course, is one of the serious advantages to using a Stromasys Charon emulator for 3000 work. The 9x7s are so old they don't have a Charon equivalent, but the strategy is the same. 

As for ODE, once you locate a diagnostics password (an exercise left to the 3000 customers who have a support provider) you must be prepared to wait on DISCCOPY. "There is a DISCCOPY in the ODE," Craig Lalley reports. "Hook up both drives and you should be able to copy the drive if it is copyable. I must warn you, it is slow, like all night all day sort of slow. But it is free."

Stan Sieler of Allegro took a hand in this quest to more reliable disc via cloning. 

My recollection of using ODE is that portions of it might not allow reading/writing to non-HP disk drives. I know that's true for some diagnostics, just can't remember which ones. If you use ODE, try to somehow check that it copied the entire disk. At some point, these HP diagnostics didn't handle large disks.I don't recall what "large" meant, but I recall bugging HP about it for some time until they released a (perhaps final?) version of the diagnostics that did support larger disks.

A few days later, Zoltak announced he was working on getting his 3000 to boot off an SD device. 

I'm attempting to install to a device called SCSI2SD V6 and run the 3000 off of an SD card. So far, a few glitches. I'm in discussion with the developer and working through issues. I'll let everyone know how it goes.

Sieler said he'd tried out SCSI2SD a while ago. "I found that it worked, but that it was much slower than it should have been. I worked with the developer, but with no real success."

Things have gotten better with the device, perhaps, according to Zoltak.

I'm using the V6 version which should be faster. It supports sync transfers up to 20MB/sec. I can't yet get MPE to install on it. It hangs when I try.

So far I've hit a few repeatable problems using an Adaptec 2940 simple setup on a PC and have been emailing [developer] Michael McMaster.

06:22 PM in Homesteading, User Reports | Permalink

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