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    Is mining dead now?

    Some are trying other coins that are still PoW, however, that has obvious problems. As miners move to another coin, that lessens the profitability for all miners of that coin. Furthermore, the mining is to support the transactions of that coin...and no coins have anywhere near the volume of...
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    If domain controller goes down, how to access ZFS shares

    Uh....environment with a single domain controller? Pretty insane. Having a local backup account isn't a bad idea, however, if you're only creating one to share amongst all your users, you'd have to give it permissions to everything. Everyone would have access to everything. If that's not a...
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    NVMe with Dell R440 PE Servers

    Even if you have the x10 backplane that supports NVME, you cannot use the M.2 to U.2 adapter for all 10 bays, just 4 of them, which are wired for nvme back to the motherboard. They should work for those 4 bays though.
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    anyone interested in Redundant Array of Independant Tape?

    Yes, please stop calling these arrays, these are not anything like traditional disk arrays that stripe and parity (raid5, raid6, raidz, etc.) I think that's partly why people were not understanding what you were trying to do originally.
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    anyone interested in Redundant Array of Independant Tape?

    Sorry, caught me mid-edit. see my edit2 edit2: what I have described is the method for directly manipulating tape; not using LTFS. I would rather not use an additional layer of abstraction if at all possible; that's just me though LTFS has to do all of these same things under the hood, so...
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    anyone interested in Redundant Array of Independant Tape?

    A file written to tape will be written sequentially. If you're using linux it's very simple to control, read, and write with tape... #rewind tape to beginning mt -f /dev/nst0 rewind #seek to end of data mt -f /dev/nst0 eod #move forward to the beginning of next file mt -f /dev/nst0 fsf 1...
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    Weird 600GB drive (SOLVED)

    I don't know about proxmox specifically, but it's possible with hardware raid cards, linux md raid, and zfs mirror vdevs. In some of these cases it does warn you about the disparity, and you have to give a flag to force it.
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    Weird 600GB drive (SOLVED)

    You can still use them together in a raid array, it will just treat all disks as the size of the smallest device.
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    anyone interested in Redundant Array of Independant Tape?

    This idea seems needlessly complex in the extreme. Why not just take the source data and rar/par it if you want to be able to recover from corruption with parity, then commit it to tape in duplicate. Done.
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    Dell XC630 Hyper-Coverged Appliance as ESXi host

    I believe this to be true as well. It appears to simply be a specific configuration of the R630. I manage hundreds of Dell R630's (with some of them being ESXi hosts; zero compatibility issues) and they're great. I wouldn't really recommend a 1U server for homelab though unless you're not...
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    Experiences with NetApp DS4243

    I'm pleased to announce that with the 9207-8e I'm able to reach 3.7GB/s, which is the limitation of the current disks I have, and not the ds4246 or HBA! Anybody want a 9200-8e? :)
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    2.5GbE network not running as expected

    Fragmentation is a layer 3 function, done by routers. If your MTU is too large for layer 2 switching, the frames would simply be dropped. It's fine to leave the MTU at 9000 generally speaking, if your switch supports it. Other traffic, e.g. out to the internet, will be fine since TCP...
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    2.5GbE network not running as expected

    Modern systems should not have trouble achieving 2.5Gb/s with standard 1500 byte frames. Typically you start to see issues when it is very small frames, and there are vastly more of them. Anyway, the greater the number of packets, the greater the resources required to process them, primarily...
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    Experiences with NetApp DS4243

    That's funny you should say that. I was thinking the exact same thing, and was scouring the net to see if anyone had real world benchmarks specifically for the 9200-8e, and I couldn't find anything. Yes, it is old...maybe time for an upgrade to sas-3. However, I was also thinking about...
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    Experiences with NetApp DS4243

    I'm going to respond to myself after further testing.... I'm still curious what phy36 is exactly, and why it's negotiated at 3Gb/s. I still can't tell if I'm being limited by the # of SAS lanes or negotiated speeds, but these numbers kind of seem to indicate to me that maybe... Here are some...
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    Experiences with NetApp DS4243

    Chiming in here because I'm a proud owner of a ds4246. I'm trying to test maximum throughput between the ds4246 and a host with a lsi2008. I've got both ports on the HBA connected to a single IOM6; trying to give it the most lanes possible rather than dual-path by going to both IOMs. I think...
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    2.5GbE network not running as expected

    I'd generally say that USB NICs are not very good. However, you also had speed issues with your desktop Realtek NIC. What is the exact card model? And what are the specs of the desktop?
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    SAS HDDs and tape on the same HBA, tape performance awful, good across network?

    I second that suggestion...block size made a major performance difference for me when writing to tape. I use tar -b 512
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    2.5GbE network not running as expected

    I thought I'd harp a bit on troubleshooting. Many people seem to want to skip steps and make poor assumptions, which leads to inadequate troubleshooting. Every system is comprised of various subsystems, with those subsystems comprised of individual components. When a system is not working as...
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    2.5GbE network not running as expected

    As Mushishi already mentioned, the max rate you achieved in your testing is suspicious because it never exceeds 1Gb/s, so definitely confirm you don't have a 1G link in the mix still. Proceed with the next test, which is to eliminate storage from the testing, and focus on network only, between...