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Questions tagged [hard-drive]

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

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1answer
10 views

OfflineUncorrectableSector & CurrentPendingSector emails - what should I do?

Running Centos 7: I've just done a yum update followed by a reboot on one of my servers, and when it came back up I got two emails: First: OfflineUncorrectableSector Device: /dev/sdb [SAT], 28 ...
0
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0answers
10 views

Fastest HDD/RAID setup to search trough 3TB of website files [on hold]

On my site I have around 3TB of different data, site files and my .sql backups; I need to search trough these files multiple times with grep or ag (because is faster), but I don't know what would be ...
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1answer
18 views

HP G8 trays keep on showing disk activity when there should be none

I have a DL380 G8 with a P420i raid controller. 2 RAID1 logical drives have been setup - one containing the OS (CentOS7) and one made of a single almost empty partition (contains a single tiny text ...
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0answers
10 views

HD from Dell Laptop does not boot in a Samsung laptop [closed]

I have an XPS 15 L502X (2011) and I am trying to use it's hard disk in my new Samsung laptop, but the HD does not boot on Samsung. If I put the HD back to the dell laptop then it boots fine, and the ...
2
votes
1answer
30 views

BTRFS, out of space, but there is plenty of space

I am facing No space left on BTRFS. What I already tried myself: After remount RW: btrfs filesystem resize max /mnt/hdd I ran balance (for weeks ;-) ) with different parameters btrfs balance start /...
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0answers
13 views

ESXI hdd not detected after power outage

We have a G4 HP server with esxi 6.5 and have faced a huge problem! after sudden power outage our server bootsup with esxi located on a SAS HDD but can not recognize two other SSD drives containing ...
0
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1answer
16 views

Create Azure VM from Snapshot if Disk Deleted Possible?

We deleted a VM as it was no longer needed. Prior to deleting we took a snapshot. The VM hard drive (OS) disk still exists but we're looking to clean up unused resources. If I delete this disk, can I ...
0
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1answer
32 views

HP Proliant G8 - mixing external drive bays SFF/LFF

I recently got myself a refurbished DL380pG8 with a 25 SFF bay. The idea was to put CentOS7 on it and use is as storage device, mixing shared storage, possibly some iSCSI drives for a couple of ...
2
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0answers
26 views

Hard drive Incorrect Serial Number

I am trying to get serial number of hard drives in Centos, but for some hard drives I am getting incorrect serial numbers when compared the serial number printed on drive label. I am using lsblk ...
2
votes
1answer
45 views

HUGE (1,2TB) WSUS does not get smaller when cleaning

In our company we use WSUS and for almost 2 years it was just left alone and has some problems because of it. The biggest problem is that it is blocking our hard drives because of its humongus size ...
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0answers
17 views

creating a partition makes the server unbootable

I have a server that comes with a softRaid of 2x450gb nvme disks. Since all my data is backupped, I don't need the raid and I want to use the full space instead. From the hosting (OVH) control panel ...
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1answer
20 views

Interpretation statistics of I/O on hard disk [closed]

Let's look at following statistics of HDD: # DISK STATISTICS (/sec) # <---------reads---------------><---------writes--------------><--------averages--------> ...
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0answers
10 views

hdd vs ssd for php/mysql dedicated server [duplicate]

I'm migrating a server and I have to choose between: SoftRaid 2x4TB sata SoftRaid 2x450GB SSD nvme The server will basically run nginx+php7.2+mysql8 The response time is very important for our ...
2
votes
1answer
17 views

esxi 5.5 unable to detect previous hard disk

I have a 129GB SSD on HP Proliant DL380 G7 with ESXi 5.5 installed from a pen drive. The hard drive contains 2 virtual machines that contain a lot of work in them. I had to remove the drive as I am ...
2
votes
1answer
40 views

Disc write cache on Windows domain controller | always disabled by default?

Is it true that on a Windows 2016 domain controller (bare metall installation), the disc write cache is turned off even if a battery-buffered RAID controller is installed and recognized by the system (...
0
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0answers
8 views

Why SMARTCTL just halts on healthcheck? [duplicate]

I am trying to run health checks, but for some drives the command just halts. I guess faulty drives? I want it to exit promptly even if health check fails, it shouldn't just lag but exit with fail ...
0
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0answers
37 views

Linux GPT Disk Mount Failure. Header Problems

A 2TB GPT disk suddenly stopped working: Those partition sizes shown below 2048|1953124351|931.3 GiB and 1953124352|5860532223|1.8 TiB are from personal memory, perfectly correct. I did extended ...
0
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0answers
24 views

Cannot execute certain commands on SATA3 3.5" external USB disk

I mount a SATA3 3.5" disk with a USB to Sata3 cable. When I connect the disk, my CentOS7 recognize it: $ dmesg -T | grep USB ... [Mon Nov 5 14:38:36 2018] usb 2-5: new SuperSpeed USB device number 3 ...
0
votes
2answers
106 views

how to increase the size for /dev/mapper/centos-root?

My current settings are as below, where the /dev/mapper/centos-root partition is almost full. Looks like this partition is on disk /dev/mapper/centos-root. but there is another disk /dev/vda , which ...
0
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0answers
32 views

Smartctl disk health check takes too much time if disk is faulty

So I am in situation where smartctl takes too much time to check disk's health if disk is faulty, but it's quick if disk is good. along with huge time, it also increase the server load to like 10+. I ...
0
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0answers
55 views

Disk access too slow in ubuntu virtual server

I have an ubuntu 18.04 virtual server, and I believe there is something wrong with the disk access. opening normal small files takes a long time and websites frequently time out without any specific ...
3
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0answers
44 views

Is this disk about to die?

I have a WD Red 4 TB disk (WD40EFRX-68WT0N0, firmware 82.00A82) that is occasionally showing uncorrectable read errors in the SMART error log, e.g.: Error 43 [18] occurred at disk power-on lifetime: ...
0
votes
1answer
18 views

How do I access a network drive that won't upgrade past SMBv1 w/ devices that have been Updated to SMBv2 & v3?

I am getting Network drive error code 0x80070035 because the network drive is no longer being updated or supported by the manufacturer. I still want to use the drive since its a good drive, but I don'...
2
votes
1answer
41 views

Uneven disk load with mdadm RAID5 and ext4 filesystem with journal

Recently I created a RAID5 with mdadm: mdadm --create /dev/md0 -l 5 -n 4 -c 512 /dev/sdb /dev/sdc /dev/sdd /dev/sde The usual tuning to speed up the initial sync: echo 32768 > /sys/block/md0/md/...
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1answer
25 views

Only 2T for using after I fdisk the disk

I have a 4T disk: Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes 255 heads, 63 sectors/track, 486401 cylinders, total 7814037168 sectors Units = section of 1 * 512 = 512 bytes Sector size (logical/...
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0answers
30 views

Hard drive not visible during Linux Mint installation

I had successfully installed Linux Mint 19 on my new Dell laptop at work. It was working fine, in general, though it did not shut down properly. I'd seen somewhere a video driver might be responsible, ...
2
votes
1answer
127 views

Intel NVME performance on Linux

I have an Intel 760P NVME drive hooked up to a Supermicro X11SRM-F with a Xeon W-2155 and 64GB of ddr4-2400 RAM. The specs for this drive claim 205K-265K IOPS (whatever 8GB span means) with about 3G/...
0
votes
1answer
15 views

Requirements analysis for CPU-bound task writing to disk

I have a data-analysis application which is CPU-bound, and produces ~35 MB/s of data per thread of execution. I'm trying to work out how many threads I can run concurrently, and be able to write to ...
2
votes
0answers
11 views

Lenovo RD640 RAID-5 Expansion

I have a Lenovo RD640 server configured for 2.5" drives. I have a RAID-5 array with 3 x Seagate 600GB 10K SAS 2.5” (ST600MM0006). I urgently need to expand the RAID as a temporary measure, but ...
0
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1answer
51 views

HDD unpluged for a long period of time goes bad? [duplicate]

I have two HDD's unplugged for two years. It's from my old pc. I have some important files in there but I'm wondering about this problem. Will the HDD's turn on and I'll be able to access all my ...
0
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0answers
17 views

What is the “shell>” on SuperMicro?

I tried to replace two failing disks on a SuperMicro server, and now the boot process does not finish, and I'm left in a shell> prompt. Anyone knows what is the software that produces the shell>...
0
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0answers
21 views

Broken disk doesn't let the system boot. DRDY

The broken disk is a SSD, it is the only disk in this system. Suddenly it started throwing an error at the POST, see image: I researched for solution but it looks like, that as I said, the disk is ...
1
vote
0answers
125 views

Synology NAS to Mac transfer: rsync creates identical folders on the same disk (NAS rsync and Mac rsync yield different hexdumps)

Summary: I use the following setup to backup data on a Synology NAS to a remote disk via rsync. First backup local: rsync initialised on the Synology NAS to the disk (mounted on the NAS). Future ...
0
votes
1answer
28 views

Strange file corruptions in ext4

Recently I came in contact with what appears to be disk corruption scenarios, and I would like to understand them better. I have a build server which I work with daily. During one full build of a ...
2
votes
1answer
39 views

Do Hyper-V VM snapshots grow continuously as writes are made to the HDD?

(Note that while this question is about Hyper-v specifically, I'm actually interested in a generalized VM snapshot answer, unless the specific answer for Hyper-v does not apply to such a general ...
2
votes
1answer
34 views

Two separate drive setup and getting cannot import 'xxxxx': no such pool exists

I have a simple freeNAS setup (FreeNAS-9.10.2-U6 (561f0d7a1)) that accesses two independent drives, no mirroring. Have not really accessed the system in a while and after a power loss I needed to ...
0
votes
1answer
162 views

Cannot set secondary hard drive offline in Disk Management

I need to set a disk as offline in order to connect it to a Hyper V virtual machine. This disk has Ubuntu installed on it. Windows has absolutely no use for it. The ubuntu disk is "Disk 1". It has ...
0
votes
2answers
188 views

4TB drives only show as 2T in Windows server 2016

I have some 4T SATA drives in GPT, they only be detected as 2T drive under Windows server 2016, but they all be seen as full capacity = 4T under FreeNAS. All the hardware configuration is the same, ...
1
vote
1answer
53 views

Bind multiple directories of one drive to multiple directories of another single mounted drive?

I have SSD and HDD hard drives on server. SSD mounted to / HDD mounted to /mnt/ I have 20 (planning more) sites with 5-20 GB content each. I want to store /home/user/domain1.com/ to SSD ...
0
votes
1answer
40 views

HP G8 server and disks [closed]

I'm looking to get an HP G8 server to create a ZFS based file server solution. One of the things that I read is that starting with G8, HP Changed their caddies, and it now performs disks check to ...
0
votes
1answer
886 views

Resize Ubuntu /dev/sda1 partition in vmware

I recently started using an appliance vm, I noticed that the /dev/sda1 partition has about 55% already. I changed the size of the virtual hard disk from 10gig to 100gig so I'm looking to expand the ...
0
votes
0answers
161 views

Supermicro server not booting with OS

We have purchased Supermicro X9DRi-LN4F model and installed Ubuntu 18 and during installation it finds the HDD and created partition and all goes well, but as soon as installation finishes and it ...
0
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0answers
46 views

MSA 2040 - Unequal Virtual Disk Groups in 1 Pool

I am planning to upgrade my storage with adding 11 more disks (1.2 TB, 10k SAS). My current setup is 13 disks installed on 1 virtual disk group. I have 1 pool and 1 volume. As far as I know I can't ...
0
votes
1answer
121 views

Detect the hard drive sector for 4k vs 512

Some of the hard drive in Virtual machines moved from legacy sector size of 512 bytes to a larger, more efficient sector size of 4096 bytes, generally referred to as 4K sectors. Operating system ...
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0answers
100 views

Dell PowerEdge RAID controller: Configuration of NVRAM and drives mismatch(Normal mismatch)

The question is what is the reason of this problem and how can i solve it without losing data on disk When server boots the following messages appears: bios of raid controller configuration of disk
3
votes
2answers
199 views

How do I identify the name of disk in first slot of my server?

I have 16 disks inserted into Lenovo SR650. The disk names /dev/sda , /dev/sdb ... are not in order with its position in the slots. I want to identify what is the name of the disk in first slot in ...
5
votes
2answers
783 views

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 ...
0
votes
0answers
73 views

Hard Disc Failure or RAID Glitch

I am trying to determine if a my hard drive is actually bad or if there was just an unexpected error with the RAID Card. In other words, should I reset the drive and make it a global hot swap or ...
1
vote
4answers
105 views

Why does disk latency drop during periods of heavy writes?

Looking at the output of Munin's diskstats plugin (which is reading from /proc/diskstats) I'm noticing what seems peculiar to me. The disk is a SSD, and I would assume, magnetic or solid state, that ...
0
votes
1answer
117 views

CentOS 7 disk space [duplicate]

I have a Centos7 server in which when executing the command df -h the occupied disk space is of 90GB but if I do a du -sh / * the sum of all directories does not correspond to 90GB, in this case it is ...