ssd

Hello. I have a server with only 3 SSD, I want to run only PostgreSQL on it. But I don't have idea what options of ZFS to use for best performance. Did anyone here such a setup, and can give me a hint? Best regards.

I have FreeBSD 11 installed on SSD for my desktop. The whole system using ZFS. I need more space. so I want to add 1TB SATA, my question is 1. Do I have to gpart first ? 2. Do I have to gpart add -t freebsd-ufs -a 1M ada1 Can I just gpart add - freebsd-zfs -a M ada1? 3. do I have to newfs -U...

Hello, I recently purchased a Samsung PM961 256GB SSD (m.2 PCIe) but ended up encountering a known bug: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211713 This issue is not yet solved. So, could anyone recommend me any m.2/PCIe SSD that works fine with FreeBSD 11.0? I'm personally...

I have two allegedly identical SanDisk SATA 3 SSD drives connected to my SATA 2 motherboard as a ZFS mirror. Until yesterday both these drives were happily operating in SATA2 mode at 300MB/s but now one of the drives (ada0) is only running in SATA 1 mode at 150MB/s. I've swapped the drive...

I’ve never been in a server room from which I could not steal a random hard drive without getting caught, if I wanted. I have been in server hosting companies’ rooms in more than one countries. Should I find one that employs guards with machine guns, still there is a point from which it isn’t...

G'day all. I've solved this somewhat, but thought I'd bring it up here and see what comes of it. Been using FreeBSD for years on my home server, now wanted to test it out on my desktop machine. Attempted to install 10.3-STABLE and 11-CURRENT but neither detected my Samsung 850 EVO SSD. Doesn't...

While using two different I/O generators, I'm seeing a huge performance difference. I'm hoping someone may know why. My guess is, the I/O path through the stack may be vastly different between the two tools. Drive: PCIe HHHL, 3.2TB NVMe Link: x4 PCIe 3.0 Driver: FreeBSD 10.3 nvme inbox Tools...

Hi, I don't understand why SSD's that have 512 sector size (logical and physical) have quirks=0x1<4K> mode? For example Samsung SSD 840-850 family. Gpart thinking that SSD is 4k, then zfs thinking that SSD is 4k (ashift: 12). TRIM working really slow with deleting 20GB+ files (L(q) in gstat...

I let FreeBSD 10.2 Release's installer use the whole SSD. Now I read about the tool gpart, so I typed gpart show, and this is what is displayed: => 63 250069617 ada0 MBR (119G) 63 63 - free - (32K) 126 249561018 1 freebsd [active] (119G) 249561144 508536 - free - (248M)...

Hi Folks, recently, me as a noob got one experts opinion on (not) using TRIM. Since this is the only voice I know recommending not to use TRIM, I'd like to put it here and hopefully get your valued opinion on this topic. Also I'd like to know, why TRIM has the potential to corrupt the...