mbutler4 · HackerTrans

hace 2 añosdiscuss

This is a bit sad for a number of reasons: my dad used to have a setup when I was a kid, I had sets as a kid, and the Tech Model Railroad Club (https://en.wikipedia.org/wiki/Tech_Model_Railroad_Club) was a source of inspiration to me as a kid with a computer and a train set.... It's sad to see this appearing to trail off, but I agree with a previous poster, I think the retirement of more baby boomers and their nostalgia may yet give the market a boost.

mbutler4

hace 2 añosdiscuss

These books were formative for me as a kid, I lost them to my mom's garage sale obsession years ago, but found that the author's son, Sheridan Brinley, worked with the publisher to not only release them as a compendium, but include an unpublished story in the volume as well. I bought it as soon as I found it on Amazon and have read it at least 4 times since... It's like a trip back to my childhood and candy for my brain. Still in love with these stories after all these years.

mbutler4

hace 3 añosdiscuss

From the perspective of the AWS solution, this is a way of giving on-premises hardware an option versus Iron Mountain or similar for archiving to offsite for DR/BC purposes. Since AWS' storage options are typically pretty insane SLAs, this is acceptable (and certainly not much worse than having old LTO tapes in a storage locker). VTLs have been around for a long, long time. Initially, they were a way of speeding up tape by writing to a much faster media, and allowing for deduplication on the media to reduce storage costs. This was, of course, in the days of on-prem arrays and storage. Over time, LTO (the dominant tape format, I think we're on LTO-9?) became denser and faster, and the speeds at which you could write to a single drive would outpace the line speeds. Given that, methods were introduced to interleave multiple writers to a single drive/cart, and to leverage the drives speed. One thing you don't want on a tape drive is "shoeshining", this is the effect when the drive has no data to write, but the momentum of the reels in the drive mechanism carry the media forward, past the last written segment, past the write head. The drive must then backup and re index to find where it left off while queuing whatever data is incoming. Well, as VTLs were built initially to handle speed of writes and dedup, once the tape drives outpaced those issues, VTL became problematic. It was basically taking a randomly writeable media and turning it into a serial storage mechanism. This really wasn't much use, and VTL started to fade. Many solutions were built, one from NetBackup was OpenStorage; this was an API that a storage vendor could write a plugin for and allow NetBackup to write to their storage as intended: multiple writer, multiple access. Allowing for treatment of a deduplicable storage media as a filesystem versus an emulated tape drive. This API approach allowed for plugins to be constructed to talk to any storage, including cloud. AWS spoke with NetBackup at one point, intending to build a storage mechanism for a very solid solution: allow on-prem customers to export their data to AWS storage, AND to recover that data BACK from AWS storage (think of the data transfer fees you would get out of that!!). When they looked at the options, they decided to build the VTL gateway. I'm not sure of how or where the decision was made, but it seemed a bit odd at the time. As VTLs were fading and the limitations of emulating tape would lead to a caching requirement that might be bad, but with line speeds for interconnect to AWS making the caching requirements even worse. I'm not quire sure how that was done, but I will say, a VTL will always be a stable, solid thing, that tends to simply run and do what was intended; much like a traditional tape drive. As for some of the other discussion here, about reading old tapes and storage longevity; I've seen tapes kept for decades that were readable, Iron Mountain is still in business for a reason. Note that THEY don't have a solid cloud offering, but really, if you had everyones old data sitting around on tapes, and could charge not only for data delivery but media conversion at DR time, wouldn't you? And the issue with old tapes isn't so much the storage in that situation, it's the hardware. LTO only reads 2 generations backward (IIRC), and can only write one gen forwards. So, for your LTO-6 drive, it can read LTO-4 to 6, and can write LTO-6 to 7, again if memory serves. So, finding the Apollo code tapes on a format tape where the only possible drives available to read it live in a museum and may or may not actually work, make the fact that they recovered that source code amazing. Not to mention the software needed to be built to interface to hardware that the last person to build a "driver" for likely is sitting in a nice retirement joint in Sarasota.

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