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35
votes
2answers
2k views

Unable to write to disk but disk isn't full

I am using Ubuntu 12.04 and can't write to any file, even as root, or do any other operation that requires writing. Neither can any process that needs to write, so they're all failing. df says I've ...
11
votes
6answers
89k views

Cleaning up a server's C:\ drive… what are the best practices?

I have a c:\ on a server that is filling up, most likely due to the accumulation of patches over the years. I'm told by Microsoft PSS Support that it is unwise to simply delete the compressed ...
9
votes
3answers
33k views

Hyper-V Server R2 - Disk management MMC returns RPC Server is unavailable

does someone faced error "The RPC server is unavailable" during connecting to Disk management MMC console to Hyper-V Server R2? Servers are in the same AD domain and MMC console is enabled on Hyper-V. ...
8
votes
7answers
5k views

How do you limit the use of network storage in your company?

I think this is one area that is a pain for every sysadmin. Users don't really know how much storage space they are using, and don't take the time to manage what is stored there, or how long it stays ...
8
votes
3answers
12k views

How to resize RAID1 array with mdadm?

I've running Ubuntu 11.04 (kernel 2.6.38-11). I replaced 2x160GB with 2x500GB drives. They are configured as RAID1. The partition tables show the right sizes. Here's sfdisk: # sfdisk -d /dev/sdb # ...
7
votes
3answers
39k views

Disk Management in Windows 2012 R2, where is it?

In Windows Server 2012 R2 I am unable to find the option to reassign the drive letter for a CD/DVD drive where the disks are normally managed. So I can reassign for hard drives, but not for optical ...
7
votes
1answer
491 views

“Mandatory” free space on a SAN?

I'm not an expert of SANs, I'm writing here to get some clues on continuous and exasperating problems we're having which our supplier seems not to be able to solve. we own an ENHANCE ES3160P4 SAN ...
7
votes
2answers
3k views

Importance of disk alignment for Windows Server 2012

I saw article about Disk alignment here and also here.Also there where some references that windows server 2003 has some problem with disk alignment. After reading article I am confused whether we ...
7
votes
1answer
10k views

Windows 2008 Unknown Disks

I have a BL460c G7 blade server with OS Windows 2008 R2 SP1. This is a brand new C7000 enclosure, with FlexFabric interconnects. I got my FC switches setup and zoned properly to our Clariion CX4, ...
6
votes
3answers
719 views

Is disk serial readable from supermicro chassis?

We are working with a hosting company for managing our dedicated servers. We asked for a replacement disk on one of the servers by providing the serial number. They took out 2 other disks instead and ...
6
votes
3answers
7k views

Which is better, Split or Monolithic VMware disk in a production enviroment?

Ok, so I have read a bunch of material on-line and curious as to your thoughts on split vs monolithic disk in a production environment. We are going to be building the VM server on a server that has ...
5
votes
2answers
653 views

ZPOOL replace defective disk in exported pool

Yesterday, I put a new disk into my server. Sadly, I didn't check the disk before of failures. I added it to my pool with the command zpool add nas ...
5
votes
2answers
11k views

Can Server 2012 R2 software mirror boot/system disk?

Has anyone actually used server 2012 R2 software mirroring to mirror the boot/system drive. If so could you confirm that in the event of drive failure it does keep running on the mirrored drive and ...
5
votes
1answer
7k views

LVM is reporting I/O errors, but the disk reports no problems. Argh

I've started seeing errors reported by LVM on certain Logical Volumes (and by Xen when attempting to create virtual machines on these LVs). But I've run tests on the disk, and can't see any hardware ...
5
votes
1answer
3k views

Unable to connect to the Logical Disk Manager service

I have a Windows 2003 R2 x64 Enterprise Edition server that is backed by a SAN that has a disk that I need to expand. The SAN management interface notes that this drive is sized at 110 GB. Windows ...
4
votes
4answers
315 views

Is it safe to mark a disk ok, in a degraded raid 5 array?

Intel Matrix Storage Console 8.9 showed a degraded array with one disk failure. Yet it offers the option to mark the disk as ok and rebuild the array? When would it be appropriate to do this? Does it ...
4
votes
1answer
86 views

No option to create new partition- why?

Why can't I create a new partition as per below? This is the disk of a physical server running Hyper-V 2012. Any help appreciated!
4
votes
5answers
597 views

Best practice disk usage for SQL Server

I've been reading that it is best practice to place the following on separate disks for performance and safety: tempdb database file log file backup files When you consider RAID using multiple ...
4
votes
1answer
2k views

Mounting a disk from SAN (RHEL 5.9)

Storage admin told me he put a 3TB drive on my server from the SAN and I was asked to mount it. The only information I know is that it's on LUN 1 and that the disk is 3TB. Multipath is setup and I ...
4
votes
2answers
24k views

Windows Server 2008 R2 reports full disk, but files do not add up

I have a web server running Windows Server 2008 R2 Enterprise. It's C:\ drive is 100 GB in size. We started getting errors from IIS and discovered that the C:\ drive, surprisingly so, was reported to ...
4
votes
3answers
1k views

Using a VHD as a data storage location?

I asked previously if there are good reasons to partition disks on Windows, and one of the big ones was for splitting data and OS. So that should you reinstall, you do not need to worry about the data ...
4
votes
2answers
3k views

How do I identify a volume in WMI from a volume name reported in the event log?

I have a Windows 2008R2 server that's reporting the following error: The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume ...
4
votes
3answers
95 views

Space effecient manner to store lots of large, similar files

I have lots of ~1 GB files (database dump files, taken at regular intervals). Right now I'm just storing them all in one directory, each file gzipped. We're running out of disk space and want to ...
3
votes
4answers
31k views

How can I un-mark a partition as active?

Overview: I use a backup storage enclosure with 6 backup drives incrementally backup up and taken off-site. One day I noticed that the backup process was failing. I logged onto the server that is ...
3
votes
2answers
5k views

LVM: Duplicate VG name VolGroup00

I'm on a server that shows a duplicate VG name. How can I rename one of these VolGroups to get rid of this conflict? [root@dev-server dev]# lvs WARNING: Duplicate VG name VolGroup00: ...
3
votes
3answers
1k views

Zpool disk failure - Where am I at?

After checking the status of one of my zpools today, I was faced with the following: root@server: zpool status -v myPool pool: myPool state: ONLINE status: One or more devices has experienced an ...
3
votes
3answers
3k views

What are your recommendations/best-practices for vDisk/datastore/LUN management with VMWare ESX

Obviously there's an infinite variety of ways of carving up your raw SAN LUNs to provide VM boot and data vDisks - but what methods do you use, what are their pros/cons, and are there any good ...
3
votes
1answer
1k views

Dell PowerEdge T710, add a new hard disk, how to? [closed]

I have a virtual machine which needs more space. This VM runs and a PowerEdge T710 with Vmware EXSI 4. I would like to add this disk in the simplest was possible. I already got a normal desktop ...
3
votes
2answers
3k views

How to create a chained differencing disk of another differencing disk in Virtual Box?

How to create a differencing disk (a chained one) from a disk that is already a differencing image? I would like to have: W2008 (base immutable) -> W2008+SQL2008 (differencing, with SQL ...
3
votes
2answers
2k views

How can i create a low disk space alert on Windows Server 2012 R2 Datacenter

I have a Windows Server 2012 R2 Datacenter virtual machine running in Azure. Recently, one of my disks ran out of space. How can i setup a notification system to alert me when one of the disk drives ...
3
votes
1answer
300 views

Conversion from Basic failed

Hi I am in an emergency situation right now. I DO have full backups of everything, but I am trying to avoid a complete reinstall of the OS and AD. I have a simple server with one drive that was set ...
3
votes
2answers
1k views

What are /dev/sda1 and /dev/sda2 on an Amazon EC2 instance?

I have an Amazon EC2 instance which according to the management console has no EBS volumes attached to it. Yet, when I run df I see /dev/sda1 and \dev\sda2 both are "disk"s. What are they? Is one the ...
3
votes
5answers
5k views

Re-sizing disk partition linux/vm

I VM Player running a linux guest and I was wanting to know how do I expand the disk? In the VM player I gave more disk space but I am not sure how to mount/expand/connect the new disk space to the ...
3
votes
3answers
2k views

Hard Drive upgrade advice for a Dell PowerEdge 1950

My setup is a Dell PowerEdge 1950 with 2x 140Gb Hard drives in a RAID 1 configuration. The OS is Windows 2003 Web Edition and disk is partitioned into to two, a 12Gb C: partition and the remainder is ...
2
votes
3answers
18k views

Safely remove a disk from a spanned volume

I'm running Windows Server 2008 R2 and converted physical disks to dynamic disks and combined them to a spanned volume. Yesterday, one disk started throwing S.M.A.R.T Errors, so I decided to get a new ...
2
votes
2answers
1k views

How to identify EBS volumes vs local volumes on running EC2 instance

On a running EC2 instance, how do I identify EBS volumes and local disks ? I would like to identify them from shell. fdisk, lsblk is not helping to pinpoint the EBS volumes only. Lets say I have ...
2
votes
2answers
522 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 ...
2
votes
3answers
2k views

What's the relation between “HP Diagnostics” the “Array Config Utility” and “Windows Disk Manager”

I have a failed drive that is reported in HP Diagnostics https://localhost:2381/hpdiags/frontend2/frontend.php? It tells me that Logical Drive 5 has a drive that is about to fail. The name of ...
2
votes
2answers
71 views

Adding a new disk to shared machine, what do we do?

I hope this is the right 'exchange' to ask in. I work in a research group, we have no SA's etc. monitoring our servers. We have total access to them, and decide what happens or doesn't happen on ...
2
votes
3answers
6k views

windows 2008 Cannot extend volume for c

I have a 150 GB hard drive on a windows 2008 server. 87 GB partition for D:\ 10 GB partition for C:\ I cannot extend/increase the partition for C:\ in the disk manager utility. as described here: ...
2
votes
2answers
97 views

Is there a way to cause Windows Server 2008 disks to discard changes at reboot?

We are experimenting with Citrix Provisioning Services to deploy servers in our environment, but it's been giving me a lot of problems. As I was cursing it for the umpteenth time it occurred to me ...
2
votes
2answers
754 views

Cannot shrink partition on Windows Server 2012

I have the following issue. I am trying to take space off of VMs and add it to the OS partition. However, whenever I try any of the VMs it will not let me shrink the space so I have free to expand the ...
2
votes
3answers
68 views

Accessing multiple disks under single virtual partition?

I have disks as below on my Debian server: /dev/sda1 276M 29M 233M 11% /boot /dev/sdb1 917G 793G 79G 92% /home /dev/sdc1 1.8T 1.7T 79G 96% /home2 /dev/sdd1 1.8T 1.7T 79G 96% ...
2
votes
1answer
1k views

Why do I get “Device does not support SMART” on WD RE4?

I have my hard disks being set up remotely on a Dell R200 server using Ubuntu OS. When I tried to verify the disk specs (which are supposed to be WD RE4 set up in RAID1 array) I get this message: ...
2
votes
1answer
643 views

many partitions on a single filegroup?¿ does it make sense?

I'm designing a datawarehouse solution and I'm a newbie in disk configuration issues, let me explain you. Our storage is spread over 6 storage enlosures having each of them 5 raid-1 disk arrays, and ...
2
votes
3answers
770 views

Windows 2008 Drive Size Discrepancy

We have a VSphere server and increased the drive for the C:\ drive on one of the VMs from 20GB to 30GB. Disk management shows the correct new size in the Disk view, but the volume information still ...
2
votes
1answer
43 views

How can i split a partition on Ubuntu?

I just purchased a brand new server on OVH with disk specification: 2 x480GB of SSD SOFT. When i do df -h, the output is: Filesystem Size Used Avail Use% Mounted on /dev/root 20G 13G ...
2
votes
1answer
1k views

Where can I find dskprobe.exe for Server 2012 R2?

As the question suggests, where can I find dskprobe.exe for Windows Server 2012 R2? I need dskprobe to recover a deleted partition and I can not find the application anywhere on my server and looking ...
2
votes
1answer
598 views

How to Resolve Hyper-V Disk Location to Drive Letter

When viewing cluster disk properties in Failover Manager or the physical path to VHD's in the settings of a VM in Hyper-V Manager the location is displayed by GUID. Is there a quick way find out ...
2
votes
1answer
259 views

Should a SQL Server tempDB partition be shared by the cluster?

We have a 2-node SQL Server 2008 RS cluster. The data and log partitions are shared among the cluster nodes. Does the tempDB partition need to be shared as well, or will local server node storage ...