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Hello *, I have recently solved my backup problem and want to share my solution. The problem: I have 27 TB of data. not all of it is irreplaceable because most of it are rips of my bluray and vinyl collections. However, ripping all the discs takes a long time and I wanted to back up...

The 9 fans are on 3 360 rads, and should all have the same speed. I found many speed controllers, but all of them seem to have 5 channels, and not support a high output per channel. Ideally, I would like the mainboard's CPU fan header to control the speed of all 9 fans. If I can't find...

I found an old radiator in my heap of junk in the basement. I remember that this was one of the best radiators around 8 to 10 years ago. I cannot for the life of me remember who made it, or what its type number was. Can the old timers on this forum help me ID the thing? Not knowing is driving...

Hi guys, gals, My gaming machine is in serious need of upgrading (i7 2600k, 8gig ram, gtx 570). I have not upgraded that thing in 5 years, and I have a nice budget for a new computer. I want the following components: Intel skylake 6700k. ASUS Z170-A mainboard. Samsung m.2 1Tb SSD. 32Gb of...

I need a sanity check on my idea. I have a 10Gb/s Ethernet switch and a 1Gb/s Ethernet switch. The 10Gb/s switch is noisy, and hot. The 1Gb/s Ethernet switch is not. All my machines (7) have both 10Gb/s card and 1Gb/s card. I am looking for a way to put both switches in parallel, using...

Opinions? Does anyone have one? It seems to get close to the 100 bucks per port price.

The Brocade EMC MP-8000B switch is available on ebay. It looks very cheap for 24 ports 10 GBe + 8 ports 8GB fc. It is only layer 2, but other then that I could find no downsides to it. Am i overlooking someting, or would this be a good cheap way to go 10 GBe for more then 4 computers...

Hi Everyone, I need a quick sanity check on an idea. Starting position: I have three servers. One big fat storage box, and 2 compute nodes. The compute nodes boot of the storage server via fibre channel point to point links. The compute nodes have 2*gbit ethernet which is too slow...

Hello All, I am looking for a main-board to put in a high end router. This router/firewall will be used in an enterprise setting, handling routing between 10G Ethernet and SDR infiniband. It will need some power. This in itself is easy, but we have some environmentalists (heavy emphasis...

Hi *, I need routing help. All my machines run ubuntu linux. I have 2 local networks: N1: 10.0.0.0/16 is the main network N2: 10.2.0.0/16 is my infiniband ipoib network There is an edge router that performs NAT/routing functions to the internet. R1: 10.0.0.1 There are 3 hosts...

Has anyone experimented with EoiB? https://www.openfabrics.org/index.php/ofa-documents/doc_download/543-etherniet-over-infiniband-eoib.html I am interested in it because I can buy 4 qdr HCA's + cables + 36port IB switch for less money than a 10Gbit ethernet switch (looking at juniper...

Hi *, I am just putting this post out here to share info. I googled this before buying the equipment and did not found anyhting on this. I can confirm that the Brocade 1020 cards work well together with a D-Link DGS-1510-28 switch. I was using Brocade SFP+ modules on both sides. I was...

Hi everyone, I am looking for some insights why my Brocade 1020 cards do not seem to like jumbo frames. I set up a test with a direct link between 2 machines using Brocade SFP+ modules and a 1M fibre cable. I have some sysctl settings in place to speed up the TCP/IP, but for both tests...

Hi Guys, I bought some nice Dell CS24 servers for almost no money. These machines are cluster nodes running a custom application. For performance reasons, I need to trunk the 2 gigabit ports together with LACP (bonding mode 4). The machines only accept 4 3.5" HDD's and I need all of...

Hi. I have a DGS-1500-28 smart switch which I really like. Is it possible to move the management ip ont a vlan? In the system settings, there is a vlan entry, but if I put the name of my vlan there, I cannot ping the switch from any of the ports assigned to the vlan. Can anyone help me?

Hi Guys, I have a problem getting my VM guests to talk to each other over my SDR infiniband network. I cannot seem to ad the ib0 ipoib device to a bridge for KVM. Does anyone have this running? The hypervisor is KVM, on a ubuntu server 14.04. Best regards, Erik

Hi everyone, I am looking for some tricks to make a raidz2 vdev as fast as possible on a ZFS on Linux. I am looking for single-stream sequential speed, random IO be damned. Currently I have 8 WD red 3Tb drives in the system. When final, there will be 16 of these, in 2 Raidz2 vdevs. The...

Hi to all. I have the following problem: A friend of mine owns a small company. He wants to hire a new staff member, and he asked me to build a PC for the new member. (The needs are quite specific to the domain, that's why an off the shelf PC won't do) The shop runs windows 7 pro on a...

Hi Guys, I am experimenting with proxmox. I have a server setup running proxmox, linked via MPIO to an iSCSI target running on another host. My other host runs ZFS. I host one lun per VM. I got to the point where I have the LUN for the VM available with MPIO active. The block device...

Hi boys and girls, Recently, I got my grubby little mitts on some nice new server hardware: Intel server board s2600cp4. E5 xeon with 6 cores @ 2.0GHz 64 GB of ECC RAM. I am considering buying this mainboard and CPU for an upgrade of my home server, and it was just given to me on loan...

Dear boys and girls, I seek some wisdom regarding the ZIL. I have been reading up on the ZIL extensively, and I am making myself insane by trying to find the correct SSD for the ZIL. This very interesting blog post: http://nex7.blogspot.be/2013/04/zfs-intent-log.html states that the use...

Just an advisory note: I upgraded the 1068E cards (2x) with 1 LSI SAS 9201-16i card in my server. I was planning on using 1 of the 1068E cards to attach my external JBOD case (I use it only for backups). It turns out that the 2 cards are not playing nicely together in the same system...

Is there anyone here that has experience with an Intel HD3000 GPU for HTPC? I have a sandy bridge 2600K CPU in my main PC. I would like to upgrade my main PC and was wondering if I can re-use the mainboard and CPU for my HTPC. I would use ubuntu 12.04 LTS as OS. I worry a bit about the...

Hello guys. I noticed that my download speeds are not what they should be and it is due to my router. Some context: I recently moved, and as part of the move I treated myself to a faster internet connection. I used to have 20MBit/sec, now I have 60MBit/sec. When speedtesting my new...

Hello folks, I launch this thread to look for a cheap external enclosure for some SATA/SAS hdds. Something like this: http://www.enhance-tech.com/products/desktop/e800-mini-sas.html But preferably as cheap as possible. It only needs to have a PSU and a mini-sas sff-8088 connector. 4 or...

Hi everyone, I have a stupid problem and I am looking for some pointers. I have decided to change my storage computer from a RAID5 ext3 based system to a ZFS RaidZ system. All my hardware is compatible with ZFS except for the storage controller. I have a new storage controller ready. My...