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July 11, 2018

Holding on to 3000 data: this might work

Tape
As much as companies want to step away from legacy data systems, some are forced to make historical vaults of financials, customer profiles, inventory and much more. The HP 3000's current populace is full of this kind of work — knowing the answers to "what happened back then?" or maybe "how much credit did we extend to that company?"

Those questions sometimes mean that a computer that hasn't seen a new model since 2001, and an operating system that got its last update a decade ago, remains in charge of crucial data. Companies trying to hold onto the data face a few problems. They fall into two categories, hardware and software. (I know, that's almost everything, unless you consider networks to be another aspect.)

On the hardware side, getting elderly magnetic media to respond reliably will be a bigger problem with every passing day that a tape needs to slide across a drive head. It's not so much the tape itself, said Stan Sieler. It's the drives. Fewer and fewer people know how to repair the ones out there, too.

Tape was used as a backup for so long it's not natural to imagine disc playing a better role. But it does today. Your HP 3000 might need a System Load Tape one day for recovery purposes. When the SLT you've carefully preserved cannot be read by any tape drive, that mean be a hard stop for your historic HP 3000. Sieler suggested that an image of a 3000's startup volume, captured and stored on another disk, could do the same thing as an SLT reload. The 3000 would have to be fully quiesced to get the best image. But if it was not, the disc image could still work; it would just require an immediate reboot of the 3000. 

Those are circumstances that a historic records 3000 could withstand. A transaction processing system is harder to quiesce. The world still has 3000s processing transactions today, and for a long time to come.

Query Google about how to capture a disk image of a 3000's startup volume. Better yet, reach out to the 3000 support company for your datacenter. If you don't have one, here's an opportunity to correct that oversight. Reach out and get the assurance you need that your 3000's ability to report history will remain strong and clear. Do it before you're forced to find out the old tape drives won't read what you need to keep that server on duty.

06:53 PM in Homesteading | Permalink

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