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

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Are new HP Gen8 servers compatible with g7 drives?

Are HP Gen8 servers (namely DL380 Gen8 with 2.5" HP disks) compatible with 2.5" harddrives from G5-G7 servers? I mean original HP disks in HP caddies not plain SAS/SATA drives.
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5answers
8k views

Extend Raid5 with a new HD (HP DL380 G3)

Because one of our customers is running out of disk space, I need to extend his Raid5 with one more disk. At the moment the raid5 contains 3x72gb harddisk. The harddisk i want to add is exactly the ...
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5answers
844 views

How do data recovery firms recover data from a “dead” hard disk?

The hard drive in my laptop just died, and it's been about a week since I ran a full backup. I know there are companies that specialize in data recovery from dead hard disks. I'm curious how they do ...
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6answers
6k 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 ...
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4answers
455 views

Can any hard drive of the same format be put into a hot-swap tray?

I'm looking at buying a hot-swap NAS that supports SATA/SATA II hard drives. Can I get any SATA drive and put it into the hot-swap trays it comes with, or will I need to find a certain kind of drive? ...
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2answers
176 views

How to salvage a RAID configuration?

A buddy of mine and I are in the process of trying to salvage an old server that hasn't been used for a while, but whose data is critically important. It's an old box with a series of hard drives ...
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3answers
1k views

Which kind of hard drive should I use for my server? [closed]

I'm in the process of buying a server and I'm afraid I know next to nothing about hardware. Below are the options given to me for the hard drive. I know I want RAID 1 but that's about all I know. A ...
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5answers
987 views

Experiencing corruption! What's a good reliability test for a Windows file system, RAID or otherwise?

I have a Windows Server 2003 box on my small network. In it is a Promise Fasttrak RAID controller and two parallel ATA Western Digital drives in a RAID-1 (mirror) configuration. When I set this up I ...
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4answers
2k views

How reliable is HDD SMART data?

Based on SMART data, you can judge the health of a disk, at least that is the idea. If I, for instance, run sudo smartctl -H /dev/sda on my ArchLinux laptop, it says that the hard drive passed the ...
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3answers
243 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 ...
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3answers
2k views

Replacing a Hard Disk with a clone fails

I just cloned a disk (A) using dd into the same kind of disk (B): dd if=/dev/sda of=/dev/sdb Now, I want to boot the server with new disk (B) instead of old (A). But i getting an error during ...
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3answers
4k views

HP Proliant DL180 G5 server treats 3-TB SATA disks as 750-GB ones

I have this HP Proliant DL180 G5 server, running with the embedded RAID controller (no Smart Array); with this configuration, it only supports 4 SATA disks. Fine. The server has 2 250-GB SATA disks; ...
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1answer
6k views

1TB Seagate Barracuda ST31000528AS - Unexpected “Offline uncorrectable sectors”

I bought a 1TB Seagate Barracuda 7200.12 - ST31000528AS drive about 18 months ago because it had a 5-year warranty, and used it alongside a Samsung Spinpoint under Ubuntu Server as one half of a ...
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3answers
720 views

How to best encrypt data on an external hard drive

This is the scenario. I have a local server in the office that I want to back up programmatically (via a bash script) everyday to an external hard disk that I will bring home. The data in the hard ...
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5answers
6k views

Make a hard disk sleep and only wake up when needed

I want to connect another hard disk to my computer, which I want to sleep 99% of the time. I will only use it for a few things, but I need it to be mounted at all times. To achieve this I would like ...
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3answers
53k views

How do I mount a “GPT Protective Partition” in Windows XP?

I formatted an external USB harddrive while it was connected to a 32-bit Windows 2003 Server Std. edition server. After loading it up with files, I moved it to my Windows XP SP3 where it didn't show ...
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1answer
6k views

Mixing dual and single port SAS disks

I have a HP DL380 G5 with 8x146GB single port SAS SSF disks (DG146ABAB4). A couple of them have failed and I can't find any new single port disks anymore. They all seem to be dual port. I'm wondering ...
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3answers
5k views

How do you check the health of individual hard drives in a RAID array?

I'm running a simple 1 TB RAID 1 array with mdadm on Ubuntu Server 10.10. I would like to simply check the status of each hard drive to make sure their both functional before it is too late. How ...
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3answers
12k views

Warning for “Reallocated Event Count” S.M.A.R.T. attribute with a new/unused drive. How serious is that?

I've just looked at the health status of my old 2,5 inch 500 Gb Fujitsu drive with a popular "HD Tune" utility. It shows a warning for the "Reallocated Event Count" property. How serious is that? ...
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2answers
249 views

Repartitioning two disks without a loss of data

I am interning at a software company and I have hit somewhat of a brick wall. Here is the deal: The Problem: We have some boxes around here that were incorrectly partitioned for 2 x 500 GB drives. ...
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3answers
2k views

What software to test SATA drives before adding to RAID 5 Array

I'll be creating a 6drive RAID 5 array for use with Openfiler. What I'd like to do is test the drives thoroughly before building the array and putting them into production. What free software is ...
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2answers
257 views

Physical/portable Hard drive tester/diagnostics tool

Are there any tools that I can plug into a hard drive and perform diagnostics such as displaying if there are SMART errors? I work with a lot of commodity hardware and need to check if some of the ...
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3answers
544 views

Defragment an Exchange Volume

The Scenario: I use a dedicated volume (RAID volume) to store all of my data for my Exchange 2007 server. Today, out of curiosity, I decided to check up on how fragmented the files on this data ...
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4answers
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HP Onboard Software SATA RAID. Knowing which drive failed

On of our HP Proliant DL320 G4's is reporting a failure. It's running Windows 2003 and configured using the built in software SATA Raid. The array manager shows only one drive attached labelled "Port ...
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4answers
962 views

Is it possible to log every access to disk/directory?

I need some script which will log (just output to the console or file) every access to some disk or directory (either works for me). I would also like to know what exactly (which subdirectory or file) ...
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2answers
9k views

How do I recover from a faulted zpool where one device is OK, but was temporarily offline?

I have a zpool with 4 2TB USB disks in a raidz config: [root@chef /mnt/Chef]# zpool status farcryz1 pool: farcryz1 state: ONLINE scrub: none requested config: NAME STATE READ ...
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2answers
2k views

Get drive power state without waking it up

Is there any way how to determine whether some drive is sleeping without occasionally waking it up? I have tried hdparm -C and smartctl -i but both of them actually wake it up when its already ...
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2answers
2k views

Simulate a hard disk fail on Virtual Box

I'm testing some NAS setups using virtualbox, with several virtual hard drives, and software raid. I would like to test the behavior under certain fails, and I would like to simulate that one of the ...
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1answer
533 views

How to access SMART attributes when using RAID with a Dell Perc 4e (LSI)

I can't easily shut down this windows server, so I'd like 'online' solutions. I tried the following unsuccessfully: Seatools Enterprise: caused a BSOD smartmontools: scan only showed virtaul RAID ...
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1answer
610 views

Survive a Software Audit

I received a letter from Autodesk asking for a "License Assessment". I understand it as a software audit. They plan to do it remotely. The thing is, I'm a freelancer, I don't use any Software Asset ...
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4answers
169 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 ...
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2answers
2k views

Harddrive issue “read-only”

I'm having an issue where when i mount my partition a few hours later it becomes read-only. Currently i run: fuser -m -k /dev/sdb1 umount /dev/sdb1 fsck -y /dev/sdb1 mount /dev/sdb1 That allows me ...
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3answers
2k views

Hard Disk Bad Sector/Fault Analysis Tool

I have doubt that my hard disk is having problem since few days. I had Windows 7 installed earlier, which was working fine, soon it started giving BSOD (Blue Screen Of Death). I reinstalled Windows 7, ...
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4answers
673 views

Are there freezing issues with the Seagate Barracuda ST31500341AS anymore?

I found this hard drive on NewEgg: Seagate Barracuda 7200.11 ST31500341AS 1.5TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive (bare drive) - OEM ...
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3answers
2k views

Manage USB hard disk on Ubuntu

I have some USB drives attached to my Ubuntu machine, I was looking for some commands to: Power-Off a drive after umounting it. Power-On and Re-Mount. Does it make sense to power-off and on a USB ...
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3answers
698 views

Recovering with DDRescue Cannot Complete (write error: Read-only file system)

I'm trying to recover a corrupt VDI using vdfuse to mount the VDI and using dd_rescue to rescue the borked partition. dd_rescue seems to be working fine but once it reached about half of the ...
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3answers
513 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 ...
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2answers
723 views

Managing consistent mounting of external USB hard drives in Linux (CentOS 5)

I have configured a server with CentOS 5.2 and am now working out a backup strategy. I plan on using Amanda as the backup application. Additionally, I am leaning towards using some USB hard drives for ...
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3answers
1k views

Convert full hard drive to LVM without external storage

Recently, my 2TB hard drive ran out of space, so I purchased another one to supplement it. My old drive is mounted in a specific folder (does not have system files or anything). Technically, I could ...
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2answers
2k views

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 ...
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3answers
758 views

Can a folder on a NAS be made available as a physical drive in VMWare?

We are currently in the process of moving from a single web server to two load balanced web servers and are facing some challenges we don't quite know how to fix. One of these is that the current ...
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2answers
1k views

ZFS hard drive configuration

I'm just wondering whether its wise to add 4x500Gb and 2x750 into the same ZFS pool? Or should we only add the same size hdd's to the pool? Any documentation would be really handy or guidelines on ...
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3answers
908 views

Write-read errors, Raid1 recovery?

This might sound stupid, but I'm supposed to ask any question here, as long as it is related. So here. I have RAID 1 on the server that is officially soon to be dead. After a chkdsk, the files are ...
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6answers
21k views

Check for hard disk errors / signs of failure on CentOS Server

What's the best way to check for HDD errors and early signs of failure on CentOS?
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4answers
12k views

SATA Drive and RAID Controller Recommendation for FreeNAS [closed]

I'm looking to build a RAID Array for storage of media (Audio, Video), file server for both CIFS/NFS and as a repository for backups. Performance isn't a huge concern but reliability is as this is ...
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1answer
83 views

Why does fdisk have a discrepancy in translating units between cylinder and sectors?

We were re-partitioning a virtual disk to increase the size of an LVM's physical volume. This is how we initially performed this: $ fdisk /dev/sdb # delete partition fdisk> d ? 1 # create new ...
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1answer
339 views

How to recreate a RAID 10 array with mdadm

So our virtual machine has broken (it's actually a Linux machine in Azure) on which we were running a RAID10 array of 4 disks. It's an ubuntu box. From what I can tell the four data disks are fine, ...
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2answers
402 views

How to map a folder to memory?

Is there a way to map a particular folder to memory? Say I have C:\somePath and I want that folder to be in memory at all times and maybe changes are dumped to HDD asynchronously without my notice. So ...
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2answers
3k views

Can I manually power down a USB hard drive in Linux? [closed]

Our backup script mounts an USB hard drive, copies some files, then unmounts. So, since the drive is only in use during this period, I thought it would be good to power down the drive once the backup ...
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2answers
534 views

How can I monitor whether my HDDs are in standby?

How can I monitor if/when and for how long my hard drives go into standby? I've a Windows Server with a RAID5 (software) for data and another regular disk on which the OS is installed. I want to make ...