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Questions tagged [hard-drive]

Questions about hard disks' performance, issues, tips, and software.

Questions about hard disks performance, issues, tips, and related software, e.g. data recovery or disk test software.

2448 questions
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Mount a partition to two mount points

I have a partition called sda4. And I want to store the mysql data and xml files on that partition because the partition which mysql and domain are installed has little space. So I'm planning to have two subfolders under the sda4, one for mysql and…
Pelang
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Server 2012 Core (no GUI) - How to manage disks?

I am working on Server 2012 which doesn't have a GUI. For now, I have two hard disks. My first one is already formatted and I see it as C: Now, I'd like to format my second hard drive and create a D: partition. Are there any ideas how could I…
hpsoftware
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Web-based disk space visualizer

I have a number of Linux webservers for which I'd like to track where disk space is going and keep disk space to a minimum. Typically I login on SSH and use du to find out where disk space is wasted but this is cumbersome and slow. A visualisation…
Martijn
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Is there way to read sectors from SATA drive without ECC correction?

I know, there was such possibility like that in old ATA standards: "READ LONG" command produced LBA sector + ECC payload. sg_read_long supports in in linux, but the command is obsolete for quite a long time, so I'm not surprised, that my HDD does…
darkk
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How can I split a drive image created with 'dd' into separate files for each partition?

I created an image of a failing drive with: dd if=/dev/sde of=/mnt/image001.dd The drive had only two partitions: Device Boot Start End Blocks Id System /dev/sde1 * 1 13 102400 7 …
Joe A
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High disk I/O when cache is used?

A few days ago I noticed a disk I/O wait and disk activity drop (which was great). Then I also notice that my cache was full(*) and fragmented. Then I flushed cache. After that, disk latency and disk activity jumped to the previous level (which was…
jcisio
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SAS or SATA for 3 TB drives?

We are looking to purchase new 3 TB enterprise-grade drives and can buy either SAS or SATA models. AFAIK, SAS generally gives better performance than SATA, but searching for benchmarks I found the article Seagate Constellation.2 and Constellation…
SyRenity
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ZFS: How can I stop a zpool replace that's currently in progress?

A few days ago, I noticed that the ZFS pool on my home server had started reslivering a disk by itself but was no longer making any progress. The disk had some SMART errors (but did not consider itself failed), so I decided to replace it with a…
Kaypro II
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smartctl to find how old is the hard drive

I just got a new server from a server provider and he placed in some old 1.5TB HDD. They do support smartctl. Is there a way I can findout how old these drives are?
Chirag
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How do you passthrough native SATA drives to a guest on ESXi?

I have ESXi 4.0 running on an Intel DX58S0 Mothboardboard with an Intel Core i7 930 processor. VT-d is also enabled. I have three drives in the system, drive 0 is used for ESXi. Drive 1 and 2 contain data from an older machine and show up under the…
John
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How long will unused hard drive last?

Our company wants to do some local (non-cloud) backup, I'm thinking the easiest is to get some high quality external hard drives, copy the data onto them, detach them, then store the drives in a climate-controlled environment. I'm imagining having…
Betty Crokker
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Dmesg full of I/O errors, smart ok, four disks affected

I'm working on a remote server (Dell Poweredge) that was a new install. It has four drives (2TB) and 2 SSD's (250 GB). One SSD contains the OS (RHEL7) and the four mechanical disks are eventually going to contain an oracle database. Trying to…
Scu11y
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failed command: WRITE FPDMA QUEUED - cause of server running slow?

A headless Linux NFS fileserver has been running slow for the last couple days (based on subjective reports from users). I checked journalctl did not see any relevant errors. However, when I connected a monitor, I was greeted by a screen full of…
MountainX
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what is the relation between block size and IO?

I have been reading about disk recently which led me to 3 different doubts. And I am not able to link them together. Three different terms I am confused with are block size, IO and Performance. I was reading about superblock at slashroot when I…
Ankit Kulkarni
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How to make a RAID disk light blink (on Linux)?

I have a RAID10 hot-swap disk that is about to fail (according to smartctl -a /dev/sdc. The disk is mounted in a rack 4U server). Unfortunately, the disks are not marked, so I'd like to get the disk light to blink. I tried the following commands: dd…
boardrider
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