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

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3
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2answers
224 views

CentOS expanding directory

I currently have a file server, and all the files are installed in /usr/local/nginx/html/. The setup is one hard disk with 1 TB of data. This 1 TB of storage is all used up. I asked the ...
3
votes
2answers
148 views

Age replacement policy for hard disks and SSDs at servers

I'm planing an age replacement policy for our storage and servers. Most of them are for DBs and some for images (static content) so yes, they have an huge I/O everytime. Also, we use Samsung 840 Pro ...
3
votes
3answers
2k views

Is this hard disk dead?

Not sure, is this right site for this Q, but let me try Last time i have problem with hard disk. Sometimes its do strange sound, and i get it from logs: $dmesg | grep ata4 [29409.945516] ata4.00: ...
3
votes
5answers
616 views

If you don't need to cram more disks in the same space, do 2.5“ hdd have any advantage over 3.5”?

Nowadays many server systems use 2.5" hard disks, afaik because they can put more spindles in the same chassis and maybe they use less power. When I don't need / cannot put more disks, is there any ...
3
votes
7answers
289 views

Secure Formatting Disks

I heard about people that used tools to recover deleted data and found a lot of unusual data, that after discovered that the their brand new pc in truth was used... When discarding HD's, as sysadmin, ...
3
votes
6answers
10k views

What is the recommended temperature range for a hard drive?

What is the best temp to keep harddrives running in? I have harddrives that keep failing due to the temp being to high.
3
votes
5answers
4k views

SATA Drive Replacement on Dell PowerEdge R410

I just talked to our Dell rep about purchasing some PowerEdge R410s and R510s and he made a comment that the SATA drives are 'special' and can't be replaced by aftermarket drives because of some ...
3
votes
5answers
2k views

c:\windows\installer Folder

On 1 of our main servers running Windows Server 2003 some bright spark decided to only partition c:\ with 20GB on a 250GB Harddrive. Problem I have is c:\windows\installer folers id taking up 13GB. ...
3
votes
3answers
521 views

Diffing two filesystems

Is there any sensible way to diff two filesystems? On occassion, you have a box that is working, and, say, perform an update and it no longer works. You have dozens of other machines that are ...
3
votes
3answers
1k views

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 ...
3
votes
2answers
528 views

ext4 fs breaking after power outages

I am experiencing quite a typical but strange problem: the hdd is going bust after power cuts on my server. I can feel it huge work done by fsck on startup after the crash, and then my subversion ...
3
votes
5answers
493 views

Solid State Hard Drive

It's said that Solid State Drive is much better than SATA one as there is no spinning head or os. So, there won't be hard disk crash problem?
3
votes
2answers
1k views

Windows Server 2008 Disk Size

I have a fairly fresh install of Windows Server 2008. When I right click on the C: drive and view properties, it says I have used 25.2 GB, but when I select all the contents of the C: drive and view ...
3
votes
3answers
3k views

How to stop a linux server from beeping when a RAID HDD has failed

A HDD has just failed on a linux server (Red Hat Linux release 9) we support. Not a big problem since it's on a RAID (MegaRAID SCSI). We're now in the process of getting a new one to replace it. In ...
3
votes
3answers
250 views

HP SAS hdd in non-HP server

I wonder if I could re-use some HP SAS drive in a non-HP server. Description: 146GB 2.5" Serial Attached SCSI (SAS) SFF 3G Single Port Hot-Plug 10K HDD Option Part# 431958-B21 Spare Part# 432320-001 ...
3
votes
6answers
2k views

using dd command to get hard drive image

Is there a way to use 'dd' command to get a hard drive image that ignores the free space on the hard drive?
3
votes
3answers
1k views

Large disk queue length

A few days ago disk on my server started to have large queue length: I've changed controller battary recently, HP configuration utility was saying the battery is bad, but after changing the battery ...
3
votes
6answers
5k views

Does this SMART selftest indicate a failing drive?

I'm wondering if the results of this SMART selftest indicate a failing drive, this is the only drive that comes up with 'completed: read failure' in the results. # smartctl -l selftest /dev/sde ...
3
votes
5answers
1k views

Server with 3 Disk, what's the best HD Configuration?

I Have an HP Server with a quad core Opteron and 3 Disk 250Gb S-ATA Disk, i'm thinking about what's the best configuration of the disk for performance and reliability. There is mainly 2 scenario : ...
3
votes
2answers
5k views

Predictive failure on hot swappable drive

on a HP PROLIANT ML350 G5 server, one of 3 physical hot swappable drives in a Smart Array has a status of Predictive Failure and the amber light is flashing. Each drive is 146GB. In HP System ...
3
votes
3answers
970 views

Why does a RAID-0 volume randomly fail with healthy drives?

I have had a pair of 5 year warranty WD Velociraptors hardware stripped on an intel ICH8R motherboard controller for about 1.5 years. The other day, the volume randomly failed during no specific ...
3
votes
3answers
241 views

Is there still a reliability problem with >250GB drives versus < 250GB drives?

Are there still reliability problems with high capacity magnetic disk drives? When 500GB and 1TB drives first appeared on the market, they had significantly lower reliability than their smaller ...
3
votes
1answer
234 views

Using consumer grade hard drives in a server

My company needs to upgrade a couple of (very) old servers we are currently running, but we are kinda strapped for cash. We got a great offer on a pair of HP DL360 G6 servers, but the hard drive cost ...
3
votes
1answer
151 views

Consumer HDDs in a HP ProLiant DL180 G6?

Model: HP ProLiant DL180 507168-B21 Will a ProLiant DL180 G6 work with a single 1TB consumer hard drive in a caddy? Yes, I know I should use enterprise HDDs but we have a limited budget, and this ...
3
votes
2answers
1k views

Move /var to new set of disks

I currently only have remote access to this CentOS box, I need to move /var form the primary RAID to a new set of disks that was installed with more space, My current thoughts on how to accomplish ...
3
votes
2answers
1k views

Poor performance from SAS disks on HS22 blade in CentOS/RHEL on ESXi 4.0

I have an HS22 blade configured with two 600GB 10K 6Gbps SAS drives configured in RAID1 using the onboard LSI Logic controller. Running on it is VMWare ESXi 4.0u2, and on top of that are a couple VMs. ...
3
votes
3answers
6k views

Add SATA HDDs to Dell PowerEdge 2950 (PERC6i) - Do HDD brands matter?

I'd like to add a couple SATA drives (1TB+ each) as RAID 10 to my PE 2950. Dell's website lists some 1TB drives that are quite expensive. Are there any advantages of using those over a HDD purchased ...
3
votes
4answers
736 views

0x00000077 Error on the corporate server

OKay so I have a slight problem that might either be apocalyptic or benign, but I don't know which. Context, updated: The server is in a small unventilated unlocked room that is about two feet wide ...
3
votes
3answers
35k views

Best way to partition 1TB drive for windows7?

Linux admins usually split their hard-drives into partitions for /usr space, os space and whole other kinds of swapness. I know windows7 requires 20GB at least for the OS to be installed. What is the ...
3
votes
3answers
143 views

Will adding HD's to a Proliant 350e server invalidate the warranty

We are looking at getting a new file server in the office. When looking at HD's the ones that HP sell are twice or more than just buying a drive and getting a caddy to hold it in the server. When we ...
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 ...
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 ...
3
votes
1answer
247 views

“Transparent” SATA RAID Controllers [closed]

I'm looking for a true hardware SATA RAID controller that can do levels 0, 1, and 5 and is, for a lack of a better term, "transparent" to the OS in that it requires no software drivers whatsoever. ...
3
votes
3answers
721 views

Ubuntu Device-mapper seems to be invincible!

I'm working on a hopefully unrelated question question and I've got to a strange situation. First: I know very little about the very low level hardware kernel storage driver magix, so I'm hoping a) ...
3
votes
4answers
3k views

Why can I not shrink the disk volume down more than 50% of original size on Server 2008

I have a new server with 540 GB disk on one partition. I decided to shrink the volume down so I could have a couple of partitions for various reasons. I could only shrink the volume by 50%. I went ...
3
votes
2answers
1k views

How do I get hard disks to spin down?

I am going to build a server for backups. I want to install the operating system on USB flash disk (a little space), and attach some hard disks for data (much more space needed). Because it is going ...
3
votes
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 ...
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 ...
3
votes
2answers
131 views

LOCK/Password Protect home partition

I have access to a server with SSH and for some reason I want to LOCK/Password protect or encrypt the home partition. Its very important for me to do it in the best possible way, I don't want anyone ...
3
votes
2answers
641 views

Can't get any SMART or temperature data from HDDs

I have a PC with recently installed Gigabyte GA-X79-UD5 MB. I've encountered some weird problem with getting SMART data or temperature for HDDs. Every single tool I've tried in Windows 7 just can't ...
3
votes
4answers
6k views

Dell PowerEdge 2800 Logical Disk Failure: Any Possible Recovery?

I was noticing a issues with the server. Usually Microsoft Updates that have downloaded, but are waiting to be installed can cause this. Before applying the updates and restarting, I ran several ...
3
votes
4answers
1k views

Can I use 2x 1TB 64MB Cache and 1x 1TB 32MB Cache in a RAID 5 setup?

I've been told the drives have to be identical for RAID 1, but when searching for additional drives in local stores to match: WD 1TB Caviar Black 7200rpm SATAII w/ 32MB Cache They say they don't ...
3
votes
1answer
598 views

Properly copy partition data to another disk?

I have a disk with separate partitions for each folder (/usr, /var, /home etc.) and wish to transfer the whole thing to another disk that is slightly larger, now I do not wish to keep the partition ...
3
votes
1answer
1k views

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?
3
votes
3answers
8k views

How to create a RAM Drive (RAM Disk) in Windows 2008 R2?

There are lots of tools for creating RAM drives. None of them seem to work for windows 2008 R2. Does anyone know if this is possible and if so how. Does anyone know of a tool that does work? I've ...
3
votes
1answer
413 views

Which part of of a hard drive has the highest throughput, beginning or end of drive?

If I create a partition at the end of the drive does that create the partition on the outside of the platter where the data is passing under the drive heads fastest?
3
votes
4answers
197 views

Migrating whole LINUX harddrive (including OS)

Right now we have a HD failure (bad sectors). Only certain files are affected. Our DC is giving us 72 hours to migrate the the content from the primary harddisk to a secondary harddisk. The problem ...
3
votes
2answers
7k views

How do I add a second disk to my zfs root pool

I am trying to add a new disk to my zfs root pool. Here is my current config: zpool status pool: rpool state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM ...
3
votes
4answers
2k views

Write random data to random sectors of Hard Drive

I have a hard drive that went bad and before I send it for RMA I want to wipe as much as possible from it. I tried using windows utilities and also did dd of /dev/random. The problem is I can't wait ...
3
votes
2answers
385 views

Two hard disks in Linux based server, have one sleep most of the time

I have two hard disks in my server. One of them is 300 GB and very silent. The other one is 750 GB and makes some noise (it's working perfectly, it's just not a silent drive). Both are connected ...