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Recent content by _CiPHER_

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    So I have a Raid 6 array, but is slow. Raid 10 any better?

    I find it strange that no one asks for the RAID engine used - which would make all the difference even despite the use of SMR drives. If there are only contiguous writes, his performance should not be bad at all. But assuming he uses some Windows-based FakeRAID/onboardRAID, performance will be...
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    software raid, multiple controllers, btrfs

    With static device node i meant that if you change the cabling or connect the drive to another controller, does it automatically pick that up upon reboot, even if you use static nodes like /dev/sda, like on BSD?
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    LSI 9240-8i RAID0 vs X99 onboard RAID0

    Start using a proper benchmark like CrystalDiskMark instead of ATTO - ancient benchmark. Also, in many cases FakeRAID from using Windows-only drivers (Intel chipset, AMD chipset) results in higher performance, particularly for SSD arrays. Hardware RAID controllers tend to do better in RAID5 and...
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    Questions about Dell H200 Raid Controller after flashing

    Well, if using the chipset SATA, it may not be supported by the hardware. But if you use an addon controller you use different hardware. So it would be supported. You only need an operating system which has an AHCI driver, on Windows that is msahci.sys and on BSD that is 'ada' driver. On Linux...
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    software raid, multiple controllers, btrfs

    Does Btrfs on Linux use static device nodes and no 'device tasting' such as ZFS under BSD?
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    Questions about Dell H200 Raid Controller after flashing

    I recommend you use an AHCI controller as opposed to a SAS controller, for various reasons. Unless you absolute need maximum performance and you require 2GB/s transfers, the PCIe 2.0 x2 interface will give you up to 1GB/s and this should be more than adequate. Try this controller instead...
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    Hard Drive Powering Off

    @tonyyy: that has nothing to do with spindown. WD Green has Headparking, which means the head that reads and writes is parked and the forces that overcome the permanent magnet are powered down, saving about 0,4 watts of power. It will not do anything about the motor that spins the platters at...
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    ZFS: 120GB SSD for L2ARC or ZIL?

    And i have responded to those quotes with a response that i believe you have not responded to? The quotes from the Intel representative were ambiguous, stating that Intel S3500/S3700 SSDs would protect writes that 'have been confirmed'. This could refer to writes that have been confirmed by a...
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    ZFS: 120GB SSD for L2ARC or ZIL?

    Yes i have addressed this with AnandTech editor HellHammer. The same applies to newer Intel SSDs like S3500 and S3700. Only the Intel 320 protects the full write-back which is 256KiB SRAM internally in the chip - the DRAM chip is not used to buffer writes. Losing the data in DRAM however is not...
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    ZFS: 120GB SSD for L2ARC or ZIL?

    You can use one SSD for both tasks using partitions. Using a non-protected SSD for sLOG (dedicated ZIL) could be the equivalent of having no ZIL at all. You need an SSD with power-safe capacitors that honours the FLUSH command. That is not Samsung or Sandforce or other consumer-grade drives...
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    New Synology uses Btrfs

    Just like Ext4 was 'production ready' when it was made the default filesystem in Ubuntu a couple years back. The result is thousands of systems with filesystem corruption, and many patches that followed that addressed the corruption bugs. Even ZFS still has corruption bugs; a few months back...
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    Possibly going to build my own NAS, big Q

    I cannot help you with the casing, but i use J1900 'atom' boards a lot for ZFS servers so may be able to help you with that. I like these boards: ASRock Q1900DC-ITX ASRock N3150DC-ITX - http://www.asrock.com/mb/Intel/N3150DC-ITX/ This last board is basically the same as the former, but...
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    Possibly going to build my own NAS, big Q

    Why? Why do you need to 'set up a whole new vdev larger than this one' ? You can add two disks in a mirror if you like. I do not recommend it, but it is possible. You can start with 6 disks in RAID-Z2 and add 10 disks in RAID-Z2. But you can just as well do it the other way around. Maybe i...
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    Possibly going to build my own NAS, big Q

    I can respect that. Still, it somewhat reads to me like: "I have been smoking for 30 years now and it is working well for me". Sure that can be true. But ugh! Smoking is bad. Just like old filesystems are BAD! Everyone should know that. It is simply of a different era. And the problem of uBER is...
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    Possibly going to build my own NAS, big Q

    Why on earth would you want a proprietary and legacy solution like unRAID if you can use ZFS - by far the best storage technology out there. It has limitations on expansion, but that's about it. Only benefits. All the legacy solutions have major drawbacks. The biggest is that they offer no true...
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