Recent content by cbyunta88

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    How much data loss do these 3ware 9650SE errors represent ?

    3ware 9650SE SATA raid cards are a bit old, but I bet a lot of folks here are still using them somewhere, or did in the recent past ... I have a 8 drive, raid6 array that lost one drive, and then another died during the rebuild and the replacement drive ended up being bad ... and then after...
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    Talk to me about a no-storage "head unit" for my ZFS arrays ...

    "The only real benefit I see is being able to easily swap out your system without touching the drives." Yes, that's the idea - that if we have failing ram/cpu/SAS card or whatever, we don't need to send a tech out and open things up and do surgery - we can just swap in a different head unit and...
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    Talk to me about a no-storage "head unit" for my ZFS arrays ...

    I have built quite a few large ZFS fileservers with DAS over the years, and they all look about the same - the computer itself is a 4U, 36-drive chassis, and then we attach 2 or 3 or 4 of the 4U, 45-drive supermicro JBOD chassis to them. So, a bunch of big 4U devices, and the first one of...
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    What is up with DDR4 LRDIMM pricing (for ZFS, etc.)

    I wonder if it makes sense to step back one generation in motherboards so that I can buy DDR3 ? As I said, I am looking at the supermicro X10DRH-iT with its dual 10gigE ports onboard... is there something just like this board that takes DDR3 ? Or am I making things hard on myself because that...
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    What is up with DDR4 LRDIMM pricing (for ZFS, etc.)

    I am building some new ZFS file servers and we are basing them on newer supermicro motherboards - I think we will choose the X10DRH-iT with dual onboard 10gigE. These take DDR4 LRDIMMS. Holy crap these are expensive. You can't even source the 64 GB ones yet, but the 32 GB ones appear to...
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    Is there some new kind of DHCP ? What's going on here ?

    First, I am not necessarily asking for help or a fix ... I just want to describe what I am seeing here and see if I am crazy or not ... I have an old d-link wifi router. Simple, does very little. Not much to say here. Has worked fine for 10 years with various ISPs who have given me...
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    Nicest/simplest rsync tutorial I've seen ...

    An ISP I have an account with posted this: http://rsync.net/resources/howto/rsync.html It's not specific to their service - or cloud storage at all - just a nice, simple rsync backup HOWTO that actually includes the ssh key and crontab steps. I've done this hundreds of times now, but I...
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    Mirrored SSDs for ZIL/SLOG - safety, flushing, capacitors

    I'm setting up a SLOG to improve performance on my (FreeBSD) ZFS-based fileserver. I plan to use 2 mirrored SSD's to create the log device. Before I continue, I have some specific questions how to approach which hardware to use. Primarily, I'm concerned with what damage/corruption may occur...
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    Ugh ... cannot find case for commell LE-575X ...

    I am going to buy a few of these for pfsense routers: http://www.commell.com.tw/Product/SBC/LE-575/LE-575-3DL.jpg ... but for some reason Commell does not make/sell cases for them, and all of my searching for 5.25" embedded cases has come up with nothing but this one model...
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    simple ssh tunnel for web browsing without proxy settings ?

    ... it turns out that sshuttle is what I want. Global proxy over SSH for all connections (well, all TCP + DNS) and you don't have to configure individual apps, like your browser.
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    simple ssh tunnel for web browsing without proxy settings ?

    Can I set up a simple ssh tunnel on localhost, and tunnel my web browsing through it, without going into proxy/socks settings in the browser ? Most ssh tunnel examples look like: ssh -D 8080 -f -C -q -N myuser@remote_ssh_server ... and then you go to browser settings and tell it to use...
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    Major platform reworking ... PCIe 2 -> 3 and new motherboards...

    Thanks. That explains some things.
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    Major platform reworking ... PCIe 2 -> 3 and new motherboards...

    Here's what we used to run - built many, many systems based on this: supermicro X8DAH+-F motherboard with 9211-8i cards for internal storage, and if we attached a JBOD we would use a 9200-8e. This setup worked great - that motherboard has 7 (!) pcie slots and so we could run 36 internal...
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    90 drive 4U JBOD from Supermicro...

    Thank you for the comments and feedback. Yes, I have learned that there is nothing in the chassis but backplanes and you connect with 1 or more SAS cables (SFF8088) between the server (the head unit) and the JBOD. Can someone expand on why plain old SATA disks would be a bad idea for this...
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    90 drive 4U JBOD from Supermicro...

    I am looking at the 90 drive JBOD: SC847DE26-R2K02JBOD ... looks like it costs $1300 or so ? A few questions ... since I've never attached a JBOD directly to a server before... Do you put a HBA or other PCI card into the JBOD, or do you just plug in a SAS cable directly into JBOD...
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