Tagged Questions

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

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2
votes
3answers
10k views

Reinserted a RAID disk. Defined as foreign. Is import or clear the correct choice?

I have re-inserted a RAID disk, on a DELL server with Windows Server 2008. The drive-status indicator was changing between a green and amber light, and the monitor gave the following message: ...
0
votes
2answers
132 views

Replacement Alternative for Dell FY606 in a Poweredge T105

I have recently upgraded my Poweredge T105 server to use a SAS 6/ir RAID controller. Unfortunately, I did not realize at the time that adding the card would cause the BIOS to complain about a missing ...
0
votes
1answer
186 views

mhddfs not support single file to split multiple hard drives.. if file size exceed limit of single storage device

I'm using mhddfs to combine multiple drives that are mounted over network using NFS. e.g. There are three machines Server Name Dir Space Server 1 /home 10 GB Space Server 2 /home 10 GB ...
1
vote
1answer
428 views

kernel warning disk error for command write - solaris svm

Recently this warning came up on my message logs, scsi: [ID 107833 kern.warning] WARNING: /pci@1c,600000/scsi@2/sd@0,0 (sd0): Oct 27 00:14:44 Error for Command: write(10) Error Level:Retryable ...
0
votes
1answer
204 views

Windows server's HDD Spin down daily/nightly - Does it makes sense?

A Windows Server 2003 R2 has the following hard disk configuration: - 3 internal hard disks attached to a 3Ware unit, configured in Raid 1 + spare unit - 3 external USB backup disks: 2 Verbatim 1TB ...
0
votes
2answers
149 views

A faulty Caviar Blue hard drive?

We have a small "homemade" server running fully updated Debian Wheezy (amd64). One hard drive installed: WDC WD6400AAKS. The motherboard is ASUS M4N68T V2. The usual load: CPU: an average of 20% ...
-1
votes
1answer
239 views

Display Power on hours of hard disk from shell

Is there a program which can display the power on hours of a hard disk from a *nix shell? I'm rewriting a server benchmark program, and this would be a useful value to compare.
0
votes
2answers
209 views

Create logical volumes from partitions in linux

I have a server running RHEL with below hard disks configuration. [root@localhost indika]# fdisk -l Disk /dev/sda: 150.3 GB, 150323855360 bytes 255 heads, 63 sectors/track, 18275 cylinders Units = ...
1
vote
3answers
652 views

How to identify faulty drive on a HP DL160 G6 - P410 Smart Array

I have a HP DL160 G6 Server with 4 HP SAS drive, firmware have been updated to the latest on the HD and the Smart Array... The issue im having is that one of the disk have a steady amber light turned ...
-1
votes
1answer
45 views

Formatting Hard Drive in windows

What is the differences between quick format and normal format in windows? I Just formatted my external Hard Drive by quick format and it took a minute to complete and then I just started formatting ...
-1
votes
1answer
121 views

Can I improve speed in Hyper-V?

I use Windows Server 2008 R2 (it is host) with Hyper-V and a guest running Ubuntu 12.04 LTC. It is my settings: RAM 32768 Cores (virtual processes) 4. (I need 12) I also use virtual hard drive ...
0
votes
1answer
147 views

Raid0 assemble disk again?

Our server recently suffered a disk failure, so our hosting provider put a new Disk in with CentOS so we can login and see if we can recover the data. We had 2 x 120 GB SSD drives in software RAID0 ...
2
votes
2answers
891 views

How to find a compatible disk for HP server?

How to find a compatible disk for HP server? I own HP ML350 G6 server. I have found a spare parts list, but since there is no disk of size 300 GB 2.5 10K 6G (originally installed on server) I am ...
0
votes
0answers
18 views

No disk space on / (Debian Jessie) [duplicate]

I have a problem with disk space on my dedicated server. I have no disk space available on partition / root@server1:/# df -h Filesystem Size Used Avail Use% Mounted on /dev/root 96G ...
2
votes
1answer
2k views

High iowait for unknown reason

I'm having a hard time figure out the reason cause high iowait on my server. This is log of iostat -xm 5 5 Linux 2.6.32-358.6.1.el6.x86_64 (prod-1.localdomain) 09/28/2013 _x86_64_ (16 CPU) ...
2
votes
0answers
383 views

Add Zabbix S.M.A.R.T. monitor to ESXi 5

I have a ESXi 5.1 host with 3 Hard Disk (1 SSD, 2 Magnetic) and I want to monitor them, especially for the S.M.A.R.T Data, that is critical and preannunce an HDD break. Since I'm really unfamiliar ...
2
votes
1answer
43 views

Ubuntu Windows Azure mass storage

I just started using Windows Azure service. I created an XL machine, and I got 28GB on the primary partition and a whopping 600GB on the temporary partition. My application needs a lot more space ...
10
votes
2answers
401 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 ...
-1
votes
1answer
115 views

SAS SCSI Converter [closed]

I recentely bought a Seagate Cheetah 146GB SAS ST3146755SS 10K Performance 15K RPM Hard Drive from EBAY and do have a computer that supports SAS. The problem is that I need to convert it into a SATA ...
2
votes
1answer
189 views

Is my hard disk failing?

I've just had the hard disk on my server replaced. It was part of a RAID 1 array. The sdb1 partition keeps failing every few hours now. # cat /proc/mdstat Personalities : [linear] [raid0] [raid1] ...
0
votes
0answers
342 views

High disk usage in CSRSS.EXE

I recently started working on the server for a certain software (Tango). The users complained that it recently became extremely low, so I used an application (ProcessHacker) to see the resource usage ...
0
votes
1answer
272 views

Currently unreadable sectors on RAID 5 linux drive

I have every 30 minutes smartd messages on /var/log/messages: smartd[3588]: Device: /dev/sdc, 176 Currently unreadable (pending) sectors This drive (sdc) is part of RAID 5 configured with mdadm. ...
13
votes
5answers
725 views

How do services with large ingest rates install enough hard disks fast enough?

Amazon, Facebook and Google must take in TBs if not PBs per day, so does that mean they have people continuously installing new hard disks and cables in new racks in the same way you might build a ...
3
votes
1answer
181 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 ...
1
vote
1answer
160 views

What hard drives does a HP Proliant BL20p G3 Blade Server take?

Full name: HP Proliant BL20p G3 Blade Server 380634-B21 I'm currently a student and got a Proliant with no hard drives for £19.99. Could anyone point me to the right hard drives to get for it, I'm ...
0
votes
2answers
46 views

re-use after logical failure [closed]

I may not have enough information for a good answer but here goes. I have a home ubuntu server with one wd 1.5 TB hard drive that was about 1.5 years old. After a 2-week shutdown it wouldn't boot. ...
4
votes
4answers
293 views

I have a 3.46 TB Raid disk array, but when I setup windows server 2012, it only refers to it as 2TB

I have a 3.46 tb raid disk array, but in volumes it shows it only as 2.00TB What have I done wrong, and how can I fix it? Thanks Noam
1
vote
2answers
279 views

df -h disk usage of empty disk shows 188M usage ?!

I have an empty disk mounted as /data The df -h shows me that 188M are used while a du -h shows me 4,0K. root@marc:~# du -h --max-depth=1 /data 4,0K /data root@marc:~# df -h Sys. de fichiers ...
0
votes
0answers
153 views

Half of disk space missing on RAID1, all disks it seems to be ok

Hi there. I have a problem with raid array. I miss it a half. My disks layout is 2 x 250 gigabytes velociraptors (Array_0000) 2 x 1TB velociraptors (Array_0001) ....both connected in RAID1. OS ...
1
vote
0answers
527 views

Differences between hdparm --read-sector and dd with “Current Pending Sectors”

This was originally an "answer" to How to use hdparm to fix a pending sector? I'd been getting SMART notifications for the same "Current Pending Sector" for days. The dd solutions around weren't ...
0
votes
1answer
55 views

How to secure SAS drives that were removed from multiple servers?

I have a few SAS hard drives that were removed from different servers because the servers reported them as faulty (amber light). Some are from a RAID5 arrays and others are from a RAID1 setup. I have ...
1
vote
2answers
61 views

Server HDD size limits

When specs for servers such as the Dell PowerEdge 850 mention a max HDD size of 250GB (for SATA) is this an actual hardware limit or was it just the max size available at the time?
0
votes
1answer
249 views

Badblocks not displaying “Pass completed” after finishing

This is the command I am running to test a HDD with badblocks: badblocks -b 4096 -c 98304 -w -s /dev/sda1 The output is: [root@localhost liveuser]# badblocks -b 4096 -c 98304 -w -s /dev/sda1 ...
0
votes
2answers
96 views

Cancel /dev/zero before it finishes?

To clear a large hard drive I was using dd if=/dev/zero of=/dev/sda. Only later I realized from reading more sources that the default block size is 512, and if I want the process to go quicker I ...
0
votes
2answers
62 views

Will regular backups make my hard drives fail early?

I have recently put in place Veeam Backup and Replication to do a nightly backup of a bunch of VMs running in VMware ESXi 5.1. It appears that while Veeam generates incremental backups, it does so by ...
20
votes
1answer
241 views

Is it possible that just one bit switches so my file shows me a letter “Q” instead of a “S”

In our application we use Hibernate and PostgreSQL to store data. In one of our database tables we have a discriminator column which says for example "TIPPSPIEL". It is a fixed string and can not be ...
0
votes
1answer
824 views

FreeNAS not detecting hard drive

I have a FreeNAS box (OS install onto USB), with 2 hard drives in it. In the GUI its only showing 1 (ada0). How do I make it detect the other one? They are both showing in dmesg: ada0 at ahcich1 ...
-2
votes
1answer
53 views

Preparing for RAID5 failure [closed]

I've got an Ubuntu system with a bunch of hard disks in it acting as my home router, DHCP server, file server, etc. Twice in the past 24 hours it has suddenly decided to set the root filesystem to ...
0
votes
3answers
174 views

RAID 5 with two failed devices

I have a software RAID 5 with 6 devices and one of them needs to be rebuilt. Until now, everything is OK. But, while the disk is rebuilt, it was found bad sectors on another disk and is being marked ...
3
votes
1answer
2k views

Is this a sign of dying hard drive?

Today I wasn't able to access one of my hard drives, after reboot it seems to work now, but i'm worried it's going to die soon. /var/log/messages Jul 4 17:05:02 host-37 kernel: [401496.020869] ...
2
votes
1answer
57 views

Benchmark individual drives in RAID5

I'm running a server with 3 RAID5 arrays through an ARECA 1880i coupled with a HP-SAS Expander. After experiencing a massive degradation in performance lately, I want to benchmark the drives ...
4
votes
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 ...
3
votes
3answers
2k views

Is it wise to use SSHDs (Solid state hybrid drives) on a server?

I have a bunch of servers with very heavy I/O that currently use SATA3/SAS drives, but do suffer from I/O wait on the SATA drives, and I have just been alerted to the existence of SSHDs which cost the ...
2
votes
4answers
1k views

How to make RHEL have persistent local hdd name?

I have 2 identical Dell R720 servers running identical Oracle Enterprise Linux(RHEL)6.4. Both servers (supposedly) configured in exactly the same way. However, one of the servers is behaving ...
0
votes
1answer
42 views

File access from CentOS new HDD by web user

I am using Centos 6.3 final and Apache 2.2.15. I recently installed a new HDD and created a symlink within my website's root directory so that my script can write big files to it and uses can access ...
-1
votes
1answer
43 views

Monitoring Windows Hard Drives

When you run several 100 windows servers and even business systems, what is a good option for monitoring hard disks and checking for bad sectors? Are there applications out there that can send e-mail ...
2
votes
1answer
236 views

GNU/Linux: SAS-disk detected as /dev/sg7 - not as /dev/sdb

I have just installed a SAS disk into a Debian server. It was detected correctly and everything was fine. Then I moved the SAS disk to a different Debian server, the same hardware model and running ...
2
votes
2answers
82 views

Progressive upgrade of a RAID array

I have a 16 disk backup RAID6 array. Currently, those 16 disks have the following specs; 500 GB 16 and 64MB cache 3 Gb/s SATA I would like to begin upgrading these disks if possible, primarily ...
0
votes
1answer
309 views

Error while mounting partition with Live CD

While booting my system, It is going into initramfs prompt and it is giving some error. Before taking any further steps, I planned to take a backup my data from hard disk. So, I bootted the system ...
2
votes
1answer
626 views

Disk not shown in Solaris 11.1 format tool

I have a Sun Fire T2000 with up-to-date firmware, running Solaris 11.1. I have inserted two SEAGATE-ST914602SSUN146G-0400-136.73GB HDDs in bays 2 and 3. Both drives show OK in the ALOM and are ...