----- Original Message ----- > > > In the message dated: Sat, 14 Sep 2013 07:05:48 -0700, > The pithy ruminations from Andrew Hume on > <[lopsa-tech] large scale storage - medium bandwidth> were: > => a recent meditation from a mailing list on the issue of media > bandwidth > => for big data. note especially the claim that the time needed to > migrate > => the data to another medium exceeds the lifetime of the current > medium. > > Huh? That just doesn't sound right to me. > > What does "lifetime of the current media" mean? > Number of reads or writes? Unlikely, as it sounds like the data > is on archival media, and the issue is migration. > > Number of years that the manufacturer considers the media to > be viable (given proper storage, etc.)? > > Let's plug in some numbers here, thanks to Wikipedia[1]: > > LTO1: > capacity = 200GB (compressed) > data transfer speed 20MB/s > 15+ years archival lifetime > Introduced September 2000 > >
Wonder how old our LTO1's were....when we upgraded our system to LTO3, one unit that we did archives for didn't want initially have to pay for the archive tapes...so we said they could have their archives written to the old LTO's for as long as we had them. Don't know when they ran out...but I think long enough for change of management to axe chargebacks. That particular unit wants infinite retention. Other archives we do have like 3, 5, 7 year retentions. (wonder how they came up with that number sequence) But, as our L700 was nearing end of life (Oracle says its lifetime supported now, though the robot seems to keep developing new mechanical problems....maybe we'll get all the parts replaced one at a time under support, and it could then last for years. Though I did two RMAs unit swaps on an F5 pair 5 and 3 months before end of support. We tried pushing the importance of everybody migrating to the new F5 pair before the end date. But, several groups didn't. About 5 months after the end, one of the replacements died. Resulted in a forced move of services over. Throw out the change management plan and doing it when us doing it wouldn't impact them, etc. Anyways...recent change in management, is calling for a change in how we do backups. Without having selected a new backup solution, they cancelled support for our Netbackup system. (though support is still working on a few open tickets, so they might not have found out yet ;) I saw some of the emails relating to one of the vendors....initially it included a tape library system, but it was removed, we won't be doing any tape going forward. What about the archives? No more, and SOL if you need anything. Our the DR tapes and archives go into open cabinets in a vault room in the basement of a building off campus. With one special segregated set of DR/archive tapes that go into a cardboard box (small enough to fit under somebody's arm) clearly labeled "PCI-DSS". sits on a cabinet just inside the vault room. We commented that they've made this 'sensitive' data easy to identify and steal...but we were told PCI-DSS is about compliance not protection. Huh? Wonder where those backups will live going forward.... Allegedly there some data that falls under HIPAA in our datacenter, but nobody knows where it is...so that's how that's being protected... its probably some group that we're hosting a VM for them, that should probably be backed up differently if they were to say. For another group we have a VM, where they explicitly told us not to make sure that none of it is backed up in any way/at any level. They have data that requires special handling in terms of backups....and the VM is their backup of that data. -- Who: Lawrence K. Chen, P.Eng. - W0LKC - Senior Unix Systems Administrator For: Enterprise Server Technologies (EST) -- & SafeZone Ally _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
