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

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3
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3answers
3k views

Forcing a verbose fsck on reboot (Ubuntu)

I'd like to force a verbose fsck on reboot of my Ubuntu linux server, I can get fsck to run on reboot by creating a file /forcefsck in my root dir ... Additionally, by adding a y into the contents of ...
2
votes
2answers
207 views

Disk Monitoring with cronjobs — report disk issues

Is there a way to monitor disk health and send cronjob reports for errors? I know you can use smartctl -s on -a /dev/hda to pull information but just wondering if there is a way that could be used to ...
1
vote
2answers
90 views

Could resizing a partition break the filesystem? [duplicate]

Possible Duplicate: Kernel Errors Present: EXT4-fs I resized a partition (using Gparted live cd), and it went fine. A day later I've started to get EXT errors. Could these two events be ...
0
votes
1answer
2k views

High load and iowait on MySQL database server leads to slow MySQL INSERTS

I have a MySQL database server runnuing on Ubuntu 12.10 with 64GB RAM, 2x3 TB SATA 6 Gb/s HDD 7200 rpm and software RAID 1 and an Intel Core i7-3930K. The database server is accessed over a local ...
0
votes
2answers
122 views

Fast format option for HDs recommended in dedicated servers?

I'm learning about dedicated servers and have a very simple question. In windows server 2008, is it a good practice to fast format your HDs for the first time? Or should i perform a slow one? Which ...
1
vote
0answers
336 views

SSD Performance under Oracle

I have serious performance issues with oracle running over ssd. I have two OCZ Vertex 3 MAX IOPS drives (firmware 2.15). It runs on a INTEL C600 SATA Chipset. Windows 2008 R2. So the issue is ...
0
votes
1answer
40 views

Is there a hook that I can use to detect if one of my hard drive partitions on my server is full?

I have a server with a partition that contains all the uploaded files from my users... It gets empty after the files received are send to the CDN. Everything works. But I am worried that one day the ...
0
votes
1answer
357 views

smartctl reports Current Pending Sectors as 2, but a long test doesn't find any errors

The SMART attributes on the drive are: SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH ...
1
vote
2answers
364 views

100% - /tmp help needed

few hours back i receievd message from directadmin Warning: The disk usage for one or more of your partitions is running low so i checked in directadmin and noticed this message Subject: Warning: ...
1
vote
2answers
209 views

What is the likelihood of data loss in a failed SSD vs HDD?

It is well documented on Wikipedia that a head crash in a hard disk drive (HDD) may result in some data loss. However, there is not much being written about the different modes of a solid state drive ...
1
vote
1answer
335 views

Failing disks in RAID array - strategy suggestions required

I have a linux based software RAID 5 array. SMART has just started to send me emails complaining that one of the 5 disks has a Current Pending Sector Count of 9 and also an Offline Uncorrectable Count ...
41
votes
6answers
18k views

How can I successfully mount an 8-bit SCSI drive on a modern computer?

I have a number of internal 8-bit SCSI-1 drives that I'd like to archive for historical purposes. These are all the old NeXT Cubes and NeXTStations (monochrome and color) that were used by id ...
0
votes
1answer
159 views

Windows 2003 Near Freezing

Problem: Our server becomes very very slow (near freezing) if I copy a file from any directory on C: and D: to any other directory. In short It becomes very slow if I touch the hard disk. Currently I ...
2
votes
1answer
282 views

Recover ext3 files from hard disk with bad sector

I have a folder of about 5GB that suddenly disappeared. When I checked its hard disk, I found out it has bad sector for about 2-3MB on this folder. Maybe it is on the folder's pointer. The partition ...
3
votes
1answer
387 views

RAID-5 or RAID-6 - is RAID-5 really that bad? [duplicate]

Possible Duplicate: Which is better: RAID5 + 1 Hotspare / RAID6? I need to decide myself between RAID5 and RAID6. The servers have a hardware-RAID controller and 6 drives each. The ...
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votes
3answers
340 views

How can I prevent silent corruption on a dying hard drive? [closed]

With a drying drive (that has more and more bad sectors), on an ext4-journaled partition, a cp operation will sometimes complete without error, but the written data will either be wrong, or just won't ...
0
votes
3answers
129 views

mysql crashs. bad hard drive or hardware

ive seen highloads and mysql crash 2 times in 1 week now. could this be the cause any idea? Jan 3 09:49:19 HOST kernel: [2272100.568769] res 51/40:38:78:7f:f1/40:00:35:00:00/e0 Emask ...
-1
votes
1answer
160 views

Mounting local external hard drive on a remote machine [closed]

I have an external hard drive, which stores extremely large files. This is LOCAL and is connected to my laptop/desktop. I run many different programs on a REMOTE Linux server. I need to use some of ...
1
vote
4answers
318 views

Upgrading hard drive on exchange server

I have a Windows SBS (2003 R2) which is currently running Exchange 2003. It's now beginning to max out it's 25GB HDD and I have been given the job of upgrading it to a larger one (lucky me...). Since ...
3
votes
1answer
593 views

what's the purpose of SMART's captive test?

When testing hard disk with SMART (for instance using smartctl tool) I can do tests (for instance long test) in two modes: captive (also called foreground mode) or non captive. Non captive mode is ...
0
votes
1answer
227 views

Linux RAID10 hit bad disk while re-syncing. Is it hosed?

I have a Linux software RAID10 device on md0. It's made up of 4 1TB disks sd[abcd]. Yesterday Smart emailed me to say a disk was going bad (seek errors going up and reallocated sectors). I rebooted ...
0
votes
2answers
232 views

Accessing data on SAS drives if server fails

If my server goes down, how can i access the data on the SAS drives? I don't have another server to plug them into, and even then connecting the drive to a different controller (while keeping the ...
-4
votes
2answers
154 views

Would data recovery be possible after Acer hidden partition reinstall? [closed]

Someone did a re-installation of his Operating System of the C: drive using his computer's 'Acer hidden recovery partition' (the alt+f10 procedure). Then he chose 'do not back up personal data (this ...
3
votes
1answer
2k views

Why does storage's performance change at various queue depths?

I'm in the market for a storage upgrade for our servers. I'm looking at benchmarks of various PCIe SSD devices and in comparisons I see that IOPS change at various queue depths. How can that be and ...
17
votes
1answer
1k views

Why does unpartitioned Hitachi HDS5C3020 drive start consuming 50% more power 15 minutes after boot?

In a Debian 6.0.6 system there are 74 pieces of 2TB Toshiba DT01ABA200 drives. These drives are identified as Hitachi HDS5C3020BLE630 drives running firmware revision MZ4OAAB0. 64 Drives attached via ...
2
votes
2answers
2k views

How to change hard disk array on HP Proliant ML 350?

We have a hd damage and we need to replace this hd, How to change and add more hd to array to HP Proliant ML 350 G5 server ?
3
votes
1answer
1k views

Smart Array P400i Physical Drive failed after being replaced

We have replaced the bad drives in a few HP systems (ProLiant DL360 G5), but they continue to show failed. The drives are part of RAID, and I think this might be why they are appearing as failed. The ...
3
votes
1answer
794 views

Rebuilding RAID 10 array with two failed drives

I have dedicated server with 4 HDD in hardware RAID 10 configuration and It worked fine until yesterday, when It started to crash randomly on couple minutes. I’ve contacted my data center and they’ve ...
-1
votes
2answers
256 views

How do I copy files between harddrives on Ubuntu CLI? [closed]

I have a dedicated server with a 120gb main ssd. The server happens to come with a couple of 3000GB hard drives. I'd like to use them to back up my main drive. Preferably, I'd like one as an exact ...
0
votes
1answer
2k views

end_request: I/O error, dev sda, sector xxxxxxxxx

I have a IBM server. This server contains 3 hard disk with RAID 5. It was working fine earlier. Unfortunately this machine got the following error message. After that I have rebooted the systems. ...
-1
votes
1answer
69 views

Seeking faster access/transfer times for accounting application [closed]

Our accounting software, Sage 50, has been getting slower to open on workstations and reading the company file. The company file only contains 2 years worth of transactions, and we just cleared out ...
20
votes
8answers
1k views

How do I protect business critical data against fire?

We have 72 hard drives that contain our webcast inventory. The number is increasing. We're located in a frame building and we are afraid of not only fire, but catastrophic fire. I've priced fireproof ...
0
votes
2answers
927 views

How long do uploaded files stay in the tmp folder in Linux Ubuntu?

I am building a web application where my users will be able to upload files. After the files are uploaded I need to send the files to two other servers, and after they will be deleted from the server ...
1
vote
1answer
113 views

Can LVM and Traditional Partitions Coexist?

Can you set up a machine in which different drives are formatted as either LVM volumes or as traditional partitions and mix and match the two? For e.g. have the LVM volume mounted as / and /home and ...
3
votes
3answers
142 views

one 16K random read I/O issues 2 scsi I/O (16K and 4K) requests in linux

I noticed weird issue when benchmarking random read I/O for files in linux (2.6.18). The Benchmarking program is my own program and it simply keeps reading 16KB of a file from a random offset. I ...
0
votes
2answers
258 views

Best redundant way to set up multiple drives of different sizes

I have a linux server (running Ubuntu 12.04 Server currently) that I need to set up multiple hard drives of differing sizes in primarily for media/backup purposes. The sizes are: 1x2TB 1x1TB ...
0
votes
0answers
126 views

How to increase hidden/used space on an SAS hard drive

My server is Windows 2008 R2 Standard Server. I have a SAS drive where all my website files are with the following properties: NTFS File System Allow files on this drive to have contents indexed in ...
0
votes
2answers
1k views

Resize Debian in VirtualBox [closed]

I have a VM with one HD of size 3GB and I'd like to enlarge its HD to 7GB. So I execute this command on the host (while guest is shutdown): VBoxManage modifyhd debian.vdi --resize 7168 Then I run ...
0
votes
1answer
46 views

Server upgrade configuration - raid vs. multiple drives vs. combo raid / backup

We're upgrading our Linux box, and moving from CentOS (quad core AMD, 8GB RAM, SATA drive) to RedHat OS (dual quad core Xeon, 8GB RAM, SAS drives) and was wondering... what will provide the best ...
0
votes
1answer
162 views

can power supply affect I/O [closed]

I have a dev server machine running Ubuntu 12.04. For a long while it's been throwing intermittent errors where it would suddenly tell me "File system is read only" or drop into a GRUB error console ...
0
votes
1answer
631 views

zfs pool error, how to determine which drive failed in the past

I had been copying data from my pool so that I could rebuild it with a different version so that I could go away from solaris 11 and to one that is portable between freebsd/openindia etc. it was ...
3
votes
1answer
2k views

Mounting an old LVM hard drive in Fedora 17 gives error message

On Fedora 17, I am trying to mount a hard drive as slave using the following command: mount /dev/sda5 /mnt/fedora8 And I get this error: mount: unknown filesystem type 'LVM2_member' How do I ...
10
votes
2answers
6k views

High disk I/O - jbd2/sda2-8 process

I have run a file server on a CentOS 5.8 final server. My only concern at the moment is what appears to be intermittent but continuous high disk I/O activity causing a general slowdown because of ...
-1
votes
2answers
961 views

Do partitions needed to be unmounted when resizing a partition?

I have this article http://www.centos.org/docs/5/html/5.2/Deployment_Guide/s2-disk-storage-parted-resize-part.html which is not clear to me. And also someone told me that swap space does not need to ...
-1
votes
3answers
91 views

Will the data be deleted when resizing a partition [closed]

I'm planning to resize one of the server partition from 40GB to 1900GB. The current partition has files on it while the space to be added is unallocated. Will my existing files be deleted? Any help ...
0
votes
3answers
111 views

How to know which disk partition is mysql and domain/php/web files is installed?

I want to ask what ssh command or any way I will know which disk partition is mysql and php is installed? Thanks.
0
votes
1answer
159 views

How to properly mount the extra hard disk space?

I am asking for help on how to properly mount the extra hard disk space. Here is my situation. Running fdisk -l, give this result root@ ~]# fdisk -l Disk /dev/sda: 2000.3 GB, 2000398934016 bytes ...
3
votes
1answer
199 views

How can i handle huge log files?

I am running SSD servers because I have great experiences with performance. However I have webservers which serve lots of requests and the uncompresssed logfiles of one day tend to grow out the ...
-1
votes
1answer
165 views

I can't find the ghosts taking up space on my hard drive [duplicate]

Possible Duplicate: How do I find out what is using up all the space on my / partition? No Free disk space $df -h returns /dev/sda1 16G 16G 0 100% / tmpfs ...
0
votes
1answer
538 views

Can't move large files, always get Input/output error after some time

I want to move a large file (hdd of a paralells vm, 81G) from one hd to another. After some time I get the error message: Input/output error. What can I do to move the file? I checked source and ...