Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [hdd]

28 questions
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What linux distro support Host Managed HDD by file system?

According to this Seagate presentation there are some ongoing (?) efforts targeted toward modification of ext4 file system introducing SMRFS -EXT4 - support of host managed hard drives. The goal is to provide layer that will hide specifics of ZAC…
Vlad
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Using two SSDs for Hot-Warm-Cold Caching a HDD on Linux

I currently have a debian-based Linux system that I'd like to optimize heavily. This machine has three different drives: An SLC SSD, a QLC SSD, and a 4TB HDD. I wanted to know if it was possible to create a multi-tier caching solution that leverages…
Swivel
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Transferring RAID1 to a new motherboard after HDD failure, and no "Superblock" found

First an OS SDD failure followed by a mobo failure, new mobo/cpu/ram later, and I have a RAID1 with a single working disk, and I am trying to get it remounted so that I can add in a new replacement disk. But to do that I need to assemble it using…
Aslan French
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Max Hard Drive Size for SATA 2

Recently acquired a 1U Supermicro E3-1230 with two 3.5" drive bays, and thinking of buying two 18TB SATA-3 hard drives for it. Before I make this investment, would anyone know if SATA-2 (3 Gbps) would support 18TB drives with their full 18TB…
Crash Override
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disks for a small esx-host: ssd raid5 or hdd raid10?

I am about to replace an ESXi host that runs some 20 VMs (mostly idling). Today around only 800Gb is used on an external iscsi-box, raid6 (total 7Tb). The new server will just simply have internal disks. 2Tb will be plenty. It will most likely be a…
Alexander Kolodziej
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Legacy SAS HDDs with no access to erase the data on them

I need to erase then recycle a bunch of SAS HDDs. They are from servers (I removed from a local ISP for a client) that require 20 amp power, which my house doesn't have, so I can't just erase them in the server using a bootable CD... I have tried a…
tomahawk
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`fio` does not timeout even specified?

# fio --name=random-write --directory=/mnt/test/ --ioengine=posixaio --rw=randwrite -bs=4k --numjobs=1 --size=4g -iodepth=1 -runtime=600 --time_based --end_fsync=1 random-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T)…
HCSF
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After disk reinstallation 2 disks in RAID1 became foreign // PowerEdge r720

I'm a newbie in DELL servers, so need your advice. First of all, we have PowerEdge r720 with 4 HDDs, two 2TB SAS with RAID 1 and two SAS 1TB in RAID 1 too. After the 1 of the HDD was plugged out and plugged in the slot, it's activity LED was no more…
d.pustovoitov
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Change Azure VM Disks from SSD to HDD

I have an Azure VM with 8 disks attached, and all of these disks are formatted as one disk on the OS. They are all SSD's, but I would like to change them to HDD's. Can I just do this for each of them in the portal with impunity, or will this cause…
5lovak
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HDD vs SSD for mongodb database server

I am setting up a physical server for an application that we have developed, the purpose of this server is to run the server's own software and store its database (mongodb). On the server machine we want to configure a RAID 1 storage system to keep…
coantia
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Discover EXT4 (or other) Linux file system (e.g. bootable?)

I want to be able to identify whether some older SATA HDD's have Linux partitions. With the advent (and my fairly recent discovery) of Windows Subsystem for Linux (WSL) on Windows, I realize options have been improved, but i'm not sure it helps with…
J S
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Object Storage vs HDD Block Storage

Currently I am using SSD Block Storage at Digital Ocean which is very costly. When I checked Vultr they are providing HDD Block Storage. Which is cheap. We have to store approx 700GB of data (Mostly images) and serve them on websites. Should we use…
Future King
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Raid 5 with hot spare (17+1) somehow became Raid 5 without hot spare (18 + 0)? (Dell Poweredge T640)

So recently we have been having strange RAID storage server issues. The most recent issue I have no idea what could be going on. config is Raid 5; 17 + 1 (17 disk volume + 1 dedicated hot spare) A disk flagged itself as 'removed'. As we're on an…
gavinpeters86
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SATA errors showing up in Journalctl while SMART Diagnostic ok - Motherboard issue?

After noticing abnormally long disk operations delays, I looked up journalctl and this is what I found: Feb 22 14:02:11.711182 Onan01 kernel: ata10: hard resetting link Feb 22 14:02:12.186958 Onan01 kernel: ata10: SATA link up 1.5 Gbps (SStatus 113…
fi11222
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Should Hard drives always set the rotatinonal flag in /sys/block//queue/rotational?

Folks, AWS exposes HDDs in their D3 instances (https://aws.amazon.com/ec2/instance-types/d3/) as nvme drives and these drives DON'T set the rotational flag as they're supposed to (https://lwn.net/Articles/408428/). I have cut a ticket to AWS, but…
Subu Sankara Subramanian
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