6
votes
4answers
506 views

SW SSD Raid 1 over HW RAID 10

A provider(data center) recommended I go with 1TB SSDs in a software RAID 1 over HW RAID 10 with mechanical drives. Their quote: Typically SSDs are most reliable than RAID cards and since you ...
-4
votes
2answers
115 views

Stacking Servers on top of each other without a using a rack [closed]

I have ten 19" servers each with 4 hard drives and an average 160W usage. For a 2 month test run of a service i want to put them just on a table without purchasing a rack. Maybe in two stacks 5 each. ...
-1
votes
2answers
125 views

No advantage from SSD boot drive for 24/7 server? [closed]

Since my OS and applications are loaded into memory upon boot, isn't there no advantage from having my OS on an SSD boot drive for a server that is kept up 24/7? I know there are several assumptions ...
10
votes
1answer
895 views

What is the term for this piece of hardware?

This is a silly question but what is the "official" term for what is carrying this hard drive? I need to know if I can purchase it separately from the hard drive.
3
votes
1answer
214 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 ...
10
votes
2answers
377 views

What are 19mm high 3.5" hard disks called?

According to Wikipedia a normal 3.5" harddisk is 25.4mm high, but then there exist also a 19mm version, which I need for a HP ProLiant MicroServer. Looking at our resellers webshop I see the ...
4
votes
3answers
597 views

RAID - buy spare disks at same time as originals?

When using RAID1, is it best practice to buy spare disks at the same time as the original disks to ensure you have the identical type in case they become unavailable in future?
-1
votes
1answer
54 views

Mounting ssd. Expectations vs reality about server load

I'v installed SSD on my server and moved tmp folder, mysql data folder and 2 most loaded websites(php) on it. I'v expected that server load will fall a little bit, but it seems that it is on the same ...
19
votes
4answers
1k views

SSD head / cylinder / cluster details

A customer of ours makes industrial robots that run on very old, but stable, hardware and software. The only bottleneck has always been the hard drive in these moving machines. Due to constant ...
0
votes
1answer
599 views

my ibm x3550 server can't find the hard drives

I recently purchased a used ibm x3550 server with two 2.5" SAS hard drives included. When I boot the server it doesn't recognise them. I get into the bios and I can't see them there. I try to install ...
0
votes
1answer
1k views

debian Read-only file system error

I logged on to my debian box and tried running some commands and I was presented with the following message. sudo: Can't open /var/lib/sudo/username/0: Read-only file system After doing some ...
2
votes
2answers
273 views

RAID 10 — how do you know a drive is going or is bad?

I have some servers with a datacenter all the servers have RAID 10 setup. How do I know when one of the drives is going bad or is bad and needs to be replaced? EDIT: These servers are unmnaaged and ...
-1
votes
1answer
60 views

Is this a sign of a bad drive? [closed]

smartctl --attributes --log=selftest /dev/sda smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-379.22.1.lve1.2.17.el6.x86_64] (local build) Copyright (C) 2002-12 by Bruce Allen, ...
-1
votes
2answers
102 views

The device, \Device\Harddisk4\DR37, has a bad block

I've received the error below and wondering if it's something I should be worried about? I've checked the RAID controller and all are functioning without errors. Log Name: System Source: ...
-1
votes
1answer
61 views

S.M.A.R.T does not want to run

How do I run S.M.A.R.T on a server with 2 hard drives in RAID1? I tried: smartctl -i -d /dev/sda smartctl -i -d /dev/sdb smartctl -i -d /dev/md1 but get this error: smartctl 5.40 2010-07-12 r3124 ...
0
votes
1answer
140 views

Hard drives fail, filesystem goes into read-only mode

2 days ago I got a warning message that: A DegradedArray event had been detected on md device /dev/md1. I contacted my data center and asked them to change the hard drive. They told me that ...
0
votes
3answers
125 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 ...
3
votes
1answer
534 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
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
117 views

samsung spinpoint hard drive dead [closed]

I have a Samsung spinpoint f3 hard drive, with a BF41-00278A pcb board. A case fan shorted and it shorted my motherboard along with the all hard drives. Nothing else failed, I got a new motherboard ...
2
votes
2answers
405 views

Testing a production hard hard / debugging high I/O Load

I've been getting a lot of high load lately on this server more so then it should for what little is on this system. Seems like just the simplest stuff using the disk like a YUM update will spike the ...
0
votes
0answers
337 views

Windows Clustering: Drive resources not showing up on inactive node

I have a Production and a QA Windows 2003 R2 sp2 cluster setup with two hosts assigned to each. On the QA cluster, the inactive node shows the disk drive letters in My Computer, but the production ...
3
votes
1answer
155 views

Upgrading HP DL185 G5 8LFF, is using a Dell J1520 4-Drop SATA Adapter possible?

The HP DL185 G5 8LFF model supports 8 3.5" drives and 1 optical drive. However, instead of the optical drive, I'd like to have 2x 2.5" drives instead. The problem is that the PSU has no more SATA ...
0
votes
1answer
349 views

Windows Server 2008 R2 missing a drive

I have a production server (Dell T110 Windows 2008 R2) that was up and running just fine. It has 4 drives 2 256GB drives a spare, and the OS, a 512 that is setup for MSSQL2008R2 Server Data drive just ...
1
vote
2answers
378 views

Must partprobe before using drive?

This is a followup question to Cannot mount /dev/sdc1 on Debian 5.0, special device /dev/sdc1 doesn't exist Basically, I have 6 SATA hard drives in a machine and I'm trying to create a RAID6 ...
1
vote
2answers
2k views

Very high load, apparently caused by pdflush

I have a server that's running CentOS 5, and it will periodically (a couple of times a day) have enormous spikes in load, and the whole server will grind to a halt. After a couple of minutes, the load ...
1
vote
1answer
424 views

Hotplug area too small error

I have VM running under RHEL6, which is running under HyperV. It has a lot of important soft installed, but does not have suffocating workload (~10% CPU is used). It's been really unstable recently ...
1
vote
1answer
206 views

Reduce vibration by suspension?

We have a location near a railroad line and when trains go by the vibration seems substantial enough to possibly cause (or explain) harddrive damage. I wonder if suspending a machine or hanging it ...
4
votes
3answers
228 views

What's a worthwhile test for a new HD?

I work for a company that uses standard 2.5" SATA HD's in our product. We presently test them by running the Linux 'badblocks -w' command on them when we get them - but they are 160 gig drives, so ...
6
votes
2answers
404 views

Could SpinRite possibly be messing up my laptop hard drives?

Context: We have a midsize business with a few dozen laptops. Whenever we get one in because someone leaves or gets an upgrade, standard procedure is to zero and then run SpinRite (level 4) on the ...
1
vote
1answer
1k views

Any performance difference to identical spec of LFF disks vs SFF disks?

Example: HP 146GB LFF 6G SAS 15k vs HP 146GB SFF 6G SAS 15K bit-size, cache, interface speed and rpms are the same, physical size is obviously different -- what about actual real life tested ...
4
votes
3answers
453 views

Vertex 2 SSD Freezing 60 seconds at a time

I have a OCZ Vertex 2 SSD that I've been using for a few years in a Win2k8 64-bit "Server" (Dell Precision M4300). Every few weeks it gets in a mood during which it temporarily freezes very often for ...
1
vote
4answers
115 views

What is a useful “transfer large things” method/medium? [closed]

Other than through the network, what does everyone use for transferring things like system images or very large files? For example, external case+hard drive like a myBook. Or, extremely large ...
0
votes
1answer
94 views

Hard drive performance in small-sized server+RAID 5 [closed]

Disclaimer: I'm an undergraduate intern and this is my first server build I've been asked to build a small server for our team around the office. We are trying to maximize space (our motherboard has ...
1
vote
12answers
680 views

What is the best approach to wiping all data off a HDD instantly? [closed]

Just wondering in case something happens and I need to wipe all my data right away. I don't care if the drive is unusable after wipe.
9
votes
4answers
3k views

What effects do magnets have on HDDs and SSDs? [closed]

What do magnets do to hard disk drives and solid state drives upon contact?
18
votes
3answers
492 views

Replacing Hard Drives [closed]

I was wondering if it is a good idea to replace a hard drive in a (fairly) system-critical database server after a certain number of years of use, before it dies. For example, I was thinking of ...
0
votes
1answer
503 views

Converter to use Sata HDD with IBM eserver x236

We have an old x236 machine with 2 70-GB SCSI disks installed on Ultra320 SCSI connector (check out the hardware manual). Now, we are planning to buy a new server in future and x326 would act as a ...
3
votes
5answers
604 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 ...
-1
votes
2answers
941 views

Is it possible to recover a Hard-disk even after formatting and rewriting all space with new data?

Some coworkers and I are discussing about Hard-disk recovery and one of my coworker said that is possible to recovery a HD even after formatting and rewrite all your space again. The argument of my ...
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: ...
0
votes
1answer
512 views

Disk is spinning down each minute, unable to disable it

I played with spindown and APM settings of my Samsung discs and now they spin down every minute. I want to disable it, but it seems it does not accept any of the spindown time or APM values. Nothing ...
2
votes
2answers
570 views

SAS drive to SAS/SATA backplane then SATA cables to SAS/SATA RAID card?

I just got a Supermicro chasis: http://www.newegg.com/Product/Product.aspx?Item=N82E16816101241 That has a backplane that supports SAS and SATA drives but the backplane has SATA ports to be ...
1
vote
1answer
341 views

How harddisk works [closed]

Looking at how hard disk works. Found that it has a number of platters and a read/write head. But in texts it shows read/write head between each platter. Is it like that in real situation? Also ...
6
votes
2answers
3k views

How long should rebuilding 250GB take? [closed]

In a PowerEdge 1900 have I a hardware RAID 5 of 5x250GB disks + 1 hot spare 250GB. Disk 2 have errors, so I forced it offline in the raid bios to replace it. Now it have been rebuilding to the hot ...
2
votes
2answers
312 views

Hard Drive Effects of Continuous Delete and Rewrite

What are the effects of continuously writing and deleting files on a magnetic hard disk? Specifically, do these files continue to be written on the recently cleared space or is there some sort of ...
1
vote
1answer
890 views

How to enable SATA in Centos 5?

I have a centos 5 linux box which is currently running off an IDE drive. I want to install a couple of SATA drives as backup drives for now. I have googled that there can be complications with SATA ...
0
votes
1answer
322 views

What can I do about the 2 SATA harddrives no longer showing up even in BIOS?

I've been trying to setup Ubuntu but have been running into countless issues. Both the 500GB drives has now become undetectable and don't even show up in BIOS. I've detailed below the process I've ...
4
votes
4answers
162 views

Windows 7 laptops stalling, waiting on harddrive

We have some company laptops at our office which are experiencing some problems. The laptops will stop responding, seemingly randomly, for periods of about 10-20 seconds. This is getting increasing ...
1
vote
1answer
179 views

Causes of hard drive SMART failure?

Specifically, can faulty system memory cause a hard drive SMART failure and can a bad hard drive connector cause a SMART failure?