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

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2answers
140 views

Install HP drive in Dell PowerEdge 2950?

First, I do agree that what I'm asking here is certainly unsupported by either HP or Dell. I'm just exploring some options here. The scenario: We have a server, a Dell PowerEdge 2950, running SQL ...
-2
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2answers
73 views

Adding second RAID controller to a motherboard with onboard RAID controller [closed]

One of our server ASUS M4N78AM motherboard that comes with an onboard RAID controller. We have already utilised it and are running out of space. Would it be possible to install an additional RAID ...
4
votes
1answer
176 views

HDD is acting up, but S.M.A.R.T says everything is fine

Before I begin, a quick disclaimer. I'm basically a developer forced into a sysadmin role by circumstances, so I apologize in advance if I say something stupid or seem like I don't know what I'm ...
1
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1answer
227 views

Hard drive error message in Virtual Root Server

After noticing a high load on our virtual root server (2 x 1 TB RAID 1 Subset) I have found these messages in /var/log/messages (CentOS): kernel: ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action ...
4
votes
3answers
2k views

Why do servers have SAS instead of SSDs? [closed]

I was wondering why do servers still come with SAS disks instead of SSD disks? I know that SAS are faster than normal hard drives but they are still much slower than SSDs. I think they are more ...
0
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0answers
100 views

Using a non-validated SED on a Dell R720

We were given a Dell R720 a couple years ago, and the machine currently has standard 300GB 3.5" SAS 15k drives. Our RAID controller is a Perc H710. We need to update our disks to FIPS 140-2 ...
1
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1answer
2k views

SCOM alert: The threshold for the Logical Disk\Avg. Disk sec/Transfer performance counter has been exceeded

We are monitoring several Windows Server 2012 R2 VMs running on Hyper-V. Now SCOM (2012 R2 UR2) reports: The threshold for the Logical Disk\Avg. Disk sec/Transfer performance counter has been ...
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1answer
54 views

Hdd for server, will it work? [closed]

i have a server : IBM System x3250 M3 its have 2 HDD slots, but currently only have 1 HDD, that is : HDD 500 TB Hotplug, sata, with part number 9CA154-176 i want to add one more HDD, but i only ...
0
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1answer
64 views

Tracking down rogue disk usage

I found several other questions regarding the theory behind my problem (e.g. this, this), but I don't know how to apply the answers to my machine. # du -hsx / 11000283 / # df -kT / Filesystem ...
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0answers
42 views

Get physical drive size from command line

Is there a command that tells me whether I have 2.5 or 3.5" drives in a system?
1
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1answer
134 views

Using Seagate 3TB drives with a Dell PERC 710 - do I have to worry about align and sector size?

I'm going to setup our new server with 8 3TB HDD from Seagate. They come, as far as I know, internally with 4K sectors. I've run this past weekend some burn-in tests on the disks, before setting them ...
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2answers
161 views

iostat reporting low r/s on first line for specific disk, expected r/s on all following lines for that same disk

When copying data from hard disk sdc to sda, I notice that the number of read requests completed per second was unusually low: $ iostat -x 1 1 Linux 3.13.0-32-generic (melancholy) 2014-08-15 ...
1
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3answers
93 views

How do I restrict a removable NTFS drive to domain access only? [closed]

A fixed NTFS drive in my computer requires a login by me, or if on the corporate network, a login by any domain user. So if the drive is stolen, no one can get at it - correct? But a removable drive ...
1
vote
1answer
74 views

Extract data from server without causing high disk IO

My current diagnosis is that there is a hardware fault, either related to the memory of the hardware RAID controller or something related to the extra juice the hard drives requires when running on ...
0
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2answers
586 views

Dell PowerEdge 1850 Amber Light

Update: I swapped my power supplies in the back and everything started powering up, fans RPM was monentarily higher than idle, with a blue light on front. Then the amber came back for a moment, then ...
-1
votes
1answer
656 views

How to access a system with write permission after file system check fails?

I created three new partitions, but after a reboot, the system is being dropped to a shell: /dev/mapper/group-newpartition: clean, 11/655360 files, 276620/2621440 blocks [FAILED] An error occurred ...
0
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1answer
42 views

“Core Charge” on defective server HDDs

I have collected a pretty decent amount of SAS and SCSI disks over the years that have a predictive failure warning. I was just about to throw them all out, but wondered if any of the manufacturers ...
3
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3answers
226 views

Power down disk array

I have a Supermicro server with an external disk array connected using SAS. Assuming I have already shut down the server properly, is there anything I should do before I can power down the disk array ...
0
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1answer
62 views

Need to install and patch 700 hard drives, hardware or software?

I have 700 laptops that need patching after being offline for an extended period, and need to be ready to go in a 3 day timespan start to finish. They are running windows 7. We have SCCM 2012 as an ...
0
votes
1answer
42 views

How to alleviate high disk reads on server?

We are currently hosting a 3TB library of image galleries on our web server, all searchable by users. With about 400 active users at a certain time on the website, our disk reads are pushing 100% I/O ...
0
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0answers
67 views

100% disk usage Windows server 2008

We have HP Proliant G6 server with 4 1.5Tb SATA disks. 2 RAID 1 arrays and 2 logical drives 1.5Tb. One day ago I mentioned twith resmon that disk usage is 100% and i\o speed is not more then 4Mb\s ...
0
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1answer
5k views

Can't mount disk (VFS: Can't find ext4 filesystem)

Tried to mount a disk (hardware raid) but failed. #mount -t ext4 /dev/sda /data mount: wrong fs type, bad option, bad superblock on /dev/sda, missing codepage or helper program, or other ...
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2answers
95 views

Measuring disk usage

What is the fairest unit to determine the disk usage (except the total storage usage e.g. in GB)? IOPS? Bytes read / write? Bytes transferred over network (would be equal to Bytes r/w)? Other? And ...
0
votes
1answer
88 views

How to create two partitions with same size?

I created two partitions using the following commands. parted /dev/sda --script -- mkpart primary 1 50001 parted /dev/sda --script -- mkpart primary 1948001 1998001 Each partition should have 50001 ...
0
votes
1answer
175 views

Leveraging rsync for a local copy between two slow drives, benefits without a daemon

I am confused by the benefits of rsync (3.1.1) if there is no daemon running remotely, e.g. copying from a drive mounted via SMB2 (via a VPN) to an external HDD (USB 2.0, sadly). Both connections are ...
1
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0answers
23 views

smartd rule does not work

I have an issue with smartd. I've studied its man page, and then I've set the SMART daemon to run long test of the hard disks two times a month and alert to the specified mail address in case of ...
3
votes
3answers
2k views

input/output error at clean ext3 partition - how to check what wrong with data block

I have a problem with a file at a ext3 partition on CentOS 5 server (kernel version 2.6.18-164.15.1.el5) with a HP Raid Controller: hpacucli ctrl all show detail Smart Array P410 in Slot 1 Bus ...
0
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0answers
463 views

XenServer 6.2 Read Only and Slow Disk I/O

I virtualized a datacenter a few months back and we have a pool of 3 HP DL360 G5 servers, each with 32GB of Memory and dual Intel Xeons. Recently we have been experiencing 2 issues, the first of which ...
1
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2answers
150 views

ncq not supported on an SATA3.0 HDD in an usb 3.0 casing

is there a well known reason why a SATA3.0 HDD supporting NCQ does not have NCQ queue depth configured when mounted from an usb 3.0 case ? output for hdparm -iI /dev/sda shows NCQ is supported output ...
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votes
1answer
475 views

Why does a low level format take very long time?

I can write ~100MB/s on a particular 4TB SAS drive when it have a file system on it, but a low level format on this drive took >16 hours. That's ~70kB/s. Since there is not filesystem and only zeroes ...
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votes
1answer
126 views

mdadm reports faulty disk, but smart doesn't find problems

I've got a 9 disk raid 5 array. Today i got a mail from my server: This is an automatically generated mail message from mdadm running on Eldorado A Fail event had been detected on md device ...
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1answer
617 views

windows rsync from different local drive, other than c, to remote

rsync -avz D:/test me@my.server.com:/test I am using cwrsync on a windows7 box rsyncing to a linux box. Everything works fine when i am going from a relative path on drive C.. but i need to rsync ...
18
votes
2answers
422 views

An unknown tool is wiping our Virtual Machines and we can't ID it

A console view of a Windows 2008 R2 VM, on vSphere is showing the following screen: "Operation 2 of 2" "Wiping disk" Can someone advise on what this program is? Some information on this mystery: ...
0
votes
1answer
405 views

How does loss of DWORD synchronization affect the health of an SAS disk?

I tried to get more information from the error log of an SAS disk by running the following command that prints values and descriptions of the SAS (SSP) Protocol Specific log page. # smartctl -d scsi ...
4
votes
1answer
2k views

No space left on device - wrong size

I'm running an FreeBSD dedicated server. I am getting messages that I have ran out of space on the device. df -h is saying that I have no space left but du -sh /* doesn't even show the directiories ...
0
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2answers
121 views

Wiping hard drives in an IBM DS3512

I have an IBM DS3512 RAID storage device, which I'm planning to sell. How would I reliably wipe my data off of all the hard drives? As far as I can tell, it abstracts away all direct access to the ...
0
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2answers
170 views

Unreasonable performance expectations for RAID 0 performance?

This is my first time building a machine with a hardware RAID card. We bought a Dell T620 with the H710P RAID controller (1GB NV Cache), a 160GB Solid State Drive (SATA Read Intensive MLC 3Gbps), and ...
0
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0answers
135 views

Domain controller stops mapping drives from file server

File Server: Windows Server 2008 R2 Standard Domain Controller: Windows Server Standard FE 2003 SP2 This has happened twice now. User will try and log in using their domain accounts and will receive ...
1
vote
2answers
6k views

Buffer I/O error on device (sata drive)

I keep getting these messages in one of my servers kernel logs (which is responsible for file operations). I wonder if anybody knows how serious are these issues. I cannot use smartmontools because ...
1
vote
1answer
1k views

External drive switching from /dev/sda to /dev/sdb

We have a small box with external drives attached for backing up configuration sets. I found out the problem is simply that on reboot or whatever unknown event the drive switches from /dev/sda1 to ...
0
votes
1answer
75 views

Is an HP Proliant 350e Gen8 server appropriate for Primevera and Sage applications? [duplicate]

I want to buy a server to accommodate both the Primevera and Sage applications? Would a HP Proliant 350e Gen8 do? Are there any concerns about this platform?
0
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0answers
41 views

poweredge 1950 iii disk options

I have a pair of poweredge 1950 iii boxes which I use for a VMware lab. They are loaded with 64 gb of ram (I discovered that this is actually supported), a pair of quad core cpus, and a pair of 300gb ...
0
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0answers
97 views

SMART output - what's the significance and meaning of “verify” errors from smartctl -a for a HDD

Does anyone know the meaning of "verify" errors listed in the output of smartctl -a (or more precisely smartctl -l error), as well as their significance, if any, in trying to evaluate the health of a ...
1
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0answers
180 views

VMware ESXi multiple I/O latency warnings

VMware ESXi 5.1.0 server showing multiple warning events: Device mpx.vmhba1:C0:T0:L0 performance has deteriorated. I/O latency increased from average value of 3913 microseconds to 530954 ...
1
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1answer
113 views

how to add a raw device on RHL

I am using a server to which someone added a harddisk. I am struggling to get this to work. I am a regular Linux user (but haven't done this stuff before). I have googled up and tried to follow the ...
0
votes
1answer
67 views

Can I convert a production disk to Dynamic?

I have a server that is running out of disk space on a partition. I can't expand to the partition running out of space because the disk is not dynamic? From computer manager can I convert the disk to ...
1
vote
1answer
38 views

Obtain an offline image of an Xserve disk

We have an Intel Xserve with Mac OS X 10.4. It seems to have been infected by a virus. We want to obtain the disk image without booting into the OS. Preferably, we would want to boot via a USB disk ...
12
votes
7answers
2k views

How do storage IOPS change in response to disk capacity?

All other things being equal, how would a storage array's IOPS performance change if one used larger disks. For example, take an array with 10 X 100GB disks. Measure IOPS for sequential 256kb block ...
3
votes
1answer
99 views

Can I rely on scsi host numbers to always stay the same?

I want to detect whether a disk is attached to the correct sata-port. While lsscsi gives me some useful information about the used host, I was wondering whether the SCSI host number will always stay ...
1
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1answer
567 views

Identify disks in vCenter to partitions in Linux guest

What I am trying to accomplish is to correlate hard drive in vCenter to the disks in the Linux guest. So here it goes Opening up settings for the guest in vCenter and moving to hardware tab, shows ...