Disks

How much noise will I lose when I power off this server?

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This morning I pondered how much will noise reduce when I power off that server? From the comfort of my living room, directly above the rack in the basement, I powered it off. At first, I was disappointed. I could still hear that repetitive whine. After considering powering off one of the other hosts, I realized the noise I heard was the ceiling fan. After switching that off, I could no longer hear […]

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They’re here! 2x (new-to-me 12TB HDD)

5 Comments / DELL, Disks, hardware, R730, smartctl / By /

Yesterday, the drive cages arrived. Today, the 2x (new-to-me 12TB HDD) arrived. They are already mounted in their drive cages and installed. Let’s look at them. This post is similar to Testing two 12TB drives to a Dell R730 on FreeBSD. If you want to know most about the tests, see that. These drives came from serverpartdeals.com. They are used and re-certified. In this post: FreeBSD 13.2-RELEASE-p2 Dell R730 In they go This

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Testing two 12TB drives in a Dell R730 on FreeBSD

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I’m ready to downsize. I’m going to replace knew with r730-03. The former has 20 5TB drives. I don’t need all that space now. I’ll settle for 12TB instead. The two new drives arrived today: [23:39 r730-03 dvl ~] % grep da2 /var/run/dmesg.boot da2 at mrsas0 bus 1 scbus1 target 2 lun 0 da2: Fixed Direct Access SPC-4 SCSI device da2: Serial Number 8CJVT8YE da2: 150.000MB/s transfers da2: 11444224MB (23437770752 512 byte sectors)

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Dan makes another zpool

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I spent my lunch, and most of my mortgage payment, on 4 x 4TB Blue 4TB SSD 3D NAND (WDS400T2B0A). In this post: FreeBSd 13.1 smartctl output partition creation zpool creation In they go This is them, being inserted into the system: I am concerned by that 150.000MB/s transfers smartctl Let’s look at the smartctl output, just in cases there are returns. What speed can that drive do? I was concerned about that

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Maybe I need another zpool

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I might need to create another zpool. Or perhaps move a drives/zpool from one host to another. In this post: FreeBSD 13.1 Background I am combining two hosts (slocum and r720-01) into one new host (r730-01). I have been moving jails from those hosts. I have an ansible playbook for creating new entries in /etc/jail.conf.d/. I thought I had the space calculations done right. Now I think I’m wrong.I’m already at 73% on

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stressdisk

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This was written a few weeks ago and I just noticed today that it had not been published. Following on from I bought a new nvme drive – or did I?, I ran stressdisk on it. [dvl@test ~]$ sudo gpart add -a 4k -t freebsd-zfs nvd0 nvd0p1 added [dvl@test ~]$ gpart show nvd0 => 34 500118125 nvd0 GPT (238G) 34 6 – free – (3.0K) 40 500118112 1 freebsd-zfs (238G) 500118152 7 –

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I bought a new nvme drive – or did I?

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Bought a new NVMe drive. Installed it using cheap PCIe adaptor bought off Amazon. From /var/run/dmesg.boot nvd0: NVMe namespace nvd0: 244198MB (500118192 512 byte sectors) Surprisingly, the device is already partitioned. [dvl@test ~]$ gpart show nvd0 => 34 500118125 nvd0 GPT (238G) 34 500118125 – free – (238G) [dvl@test ~]$ Eh, is is this a used device? The static bag it arrived in was sealed. Let’s see. [dvl@test ~]$ sudo smartctl -a /dev/nvd0

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writing random data via geli

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You might recall that suspect drive from the zpool replace on the weekend. Thomas Hurst suggested: Might be worth overwriting the drive, try to encourage it to actually reallocate the sectors now the data on them is no longer needed. I, being one to take advice from people on the internet, and Michael W Lucas, decided to try his suggestion. The drive in question. [dan@knew:~] $ tail /var/log/messages Dec 14 00:00:00 knew newsyslog[88570]:

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Replacing a failing drive in a ZFS zpool

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In this post I will replace a working, but suspect, drive with another drive. No down time. The server is knew. In this post: FreeBSD 12.2 ZFS TOSHIBA MD04ACA500 5TB drive – the suspect drive: da17 TOSHIBA HDWE150 5TB drive – the replacement: da22 None of these drives are under warranty What drives are in this server? I have had good luck with Toshiba DT01ACA300 3TB drives (presenting as Hitachi HDS723030BLE640), starting a

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