Primarily questions about disk storage, sometimes questions about application storage or cloud storage. Always questions about storing data.

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6
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1answer
209 views

DFSr detected that a file was changed on multiple servers, but “winning” file and that moved to conflicts folder have same hash

We've just deployed a new DFS replication system between two Windows 2012 R2 servers. We cloned the DFSr database using MS's recommendations ...
4
votes
1answer
277 views

DFSR Backlog Stuck on Non-Existent Folders

I have two 2008r2 servers setup in a full-mesh multipurpose replication group. (01 and 02). 01 was the source server. The initial sync just finished last night and there are 2 folders that do not ...
4
votes
1answer
2k views

How to reliably map vSphere disks <-> Linux devices

Task at hand After a virtual disk has been added to a Linux VM on vSphere 5, we need to identify the disks in order to automate the LVM storage provision. The virtual disks may reside on different ...
3
votes
1answer
19 views

Hyper V 2012 and SQL Cluster Live migration

I've been doing allot of searching and even asked around here at the office without a good answer. I would like to know, within Server 2012 R2 Hyper V, can you or can not do a storage migration of a ...
3
votes
1answer
42 views

VSphere web-client shows incorrect datastore capacity

On the vsphere web client I have a strange problem with one of my datastores as it's displayed capacity is incorrect. Originaly it had 1TB of disk space. After I increased it's capacity on 1.4TB the ...
3
votes
1answer
29 views

FC-Multipath: Which path_selector performs best?

So I learned that since Red Hat 6 it is possible to choose between 3 algorithms for loadbalancing between different paths to my FC-SAN, the default dumb round-robin - and new - queue-length and ...
3
votes
0answers
140 views

Using ZFS head node as database server?

I'm using a dual-head ZFS-backed NAS for high availability cluster shared storage, based on Nexenta's recommended architecture as seen here: The disks in 1 JBOD will store the database files for a ...
2
votes
0answers
23 views

Maximum size of a virtual pool in SCVMM 2012R2

I have a Windows Server 2012 R2 running SCVMM 2012 R2 and an over-committed virtual storage pool. In Server Manager the capacity of this storage pool is 128TB which translates to 140TiB which makes ...
2
votes
0answers
111 views

Infiniband link is at 4X SDR with DDR HCAs; has anyone seen this before?

I've recently upgraded my Infiniband HCAs from SDR to DDR, however upon upgrading, it has not improved the link speed at all. Receiving the following output from 'iblinkinfo': CA: ip-san-1-au3a ...
2
votes
0answers
98 views

Shrinking a volume and extending another in dynamic disk

I have a test environment where I converted a disk to dynamic, shrunk a volume, and then expanded another all on the same disk. The result is that disk management in Windows Server 2008 R2 shows two ...
2
votes
0answers
3k views

XenServer 5.5 local storage problem

I have the following problem with a Citrix XenServer 5.5. I had to physically move the host, so I shut down all machines via console: xe vm-shutdown force=true vm=my-machine-uuis-s After that I ...
1
vote
0answers
31 views

“Hot data” and erasure coding: how to know if it is efficiently handled?

It is well known that erasure coding adds extra complexity because of encoding and decoding operations. Due to this drawback, most of cloud services recommend to use data replication for hot data and ...
1
vote
0answers
270 views

Sizing of journal disks with Microsoft Storage Spaces parity volume

I'm currently speccing out a new backup server. It's going to be running Windows Server 2012 R2 with Direct Attached Storage, and I'm considering using Storage Spaces rather than using a RAID card. ...
1
vote
0answers
55 views

HP Command View: Could not find authenticator for Security Domain

I have some HP EVA storage arrays. They are monitored via Command View - the HP management product. Of 8 management servers, a grand total of one will not let me log in using 'domain' credentials - ...
1
vote
0answers
182 views

Most efficient way to setup massive high-availability storage in Azure to work with multiple VMs?

I'm looking into various options for setting up massive high-availability storage in Windows Azure, to use together with my Azure VMs. The VMs need to be able to work with the storage as if were a ...
1
vote
0answers
64 views

Mapping LUNs to drive slots on a MSA2312i?

I'm working with an older MSA2312i. I really need map the current LUN configuration to associated slots via the SSH so I can make it scriptable. Is there a ready way to do so? I would have thought a ...
1
vote
0answers
455 views

windows2012 failover cluster + storage. Considerations

We plan to build a failover storage with Windows2012r2. There will be 2 or 3 physical machines with 2 virtual machines on each server. One virtual machine building a failover, second one being storage ...
1
vote
0answers
455 views

Access iomega StorCenter ix4-200d dump utility from SSH

My employer is in the process of returning a broken HDD to Lenovo/iomega. Unfortunately, before we can send it in, they require us to do a complete dump of the system's current state. Normally, I ...
1
vote
0answers
86 views

Partition block size different from device's and stacked LVM volumes ones

I have a pair of HP ML350 G6 servers with LSI MegaRAID 9266-4i+CacheVault driving Supermicro CSE836E16 enclosures via SAS bracket, filled with WD RE 3TB SATA drives. On these are configured a RAID10 ...
1
vote
0answers
61 views

Is it possible to dynamically set the upload_store value for nginx upload modue?

I have a lot of hard drives in my server and I want to upload files to them. Since it is overhead to upload a file to one drive and then move it to another, I would like to directly upload the file to ...
1
vote
0answers
215 views

Solaris x86 11.1 and qlt driver — only 3/4 ports attach

I'm using the QLogic QLE2564 4-port 8Gb HBA. The problem I have is that when I attach the qlt target mode driver to the card, only 3/4 ports attach the driver. ffffc10006854e58 pciex1077,2532, ...
1
vote
0answers
287 views

How do I prevent graphite from filling up my primary disk on ubuntu in EC2?

I am running graphite (per reading this blog by Etsy) on an Ubuntu 10.10 linux install on EC2. Basically it works, except that my server is constantly exhausting reported free disk space. I say ...
1
vote
0answers
126 views

Virtual linux drive on a NAS - recommendations

I have a Linux server currently running under a Microsoft Virtual Machine. I have it set up so that the storage drive is set up as a secondary virtual disk. I need to move this machine to a new box ...
1
vote
0answers
102 views

Windows Storage Server 2008 & Windows 7 sharing acting unpredictably

Configuration: Windows Server 2008 r2 ADUC, Windows Storage Server 2008, Windows 7 Professional x86 & x64 Scenario: We've been using Windows Storage Server on a NAS device for the last year or ...
1
vote
0answers
73 views

Backup Strategy ideas needed for awkward setup

We run a business with our offices in Nottingham in the UK. We keep our business critical data on a set of servers in Manchester UK. Although the two locations are not half a world away from one ...
1
vote
0answers
419 views

Celerra: zoning done to data mover

I have a small confusion-while zoning to data mover, wwn zoning in preferred. Which should be Node 50060160c1e10d7d -please correct me if I am wrong. Because in my environment I see it is zoned to SP ...
1
vote
0answers
127 views

Storage servers architectural solution for backup. What is the best way? (pics inside)

What is the best architecture for storage servers array? Needs... a) easy way to add one more server to array b) we don't have single backup server c) we need to have one backup for each "web" part ...
1
vote
0answers
113 views

SQL Server Replication Agent priority

Every hour a server replicates SQL server data with some external web server. During this time, which takes about 2-5minutes, the database seriously slows down. Colleagues, which work with the front ...
0
votes
0answers
27 views

Server 2012R2 DFS High Availability - with local storage?

Can I use clustering for high availability on two identical 2012R2 boxes that use LOCAL storage (not attached or SAN)? Local storage is super cheap and scalable, which is why the SAN has been ...
0
votes
0answers
33 views

Invisible (!) data on NAS machine

I am running a Thecus N7510 NAS machine, with 4 HDD in a RAID 10 configuration and one more as a "hot stand by". This machine is used for a variety of purposes, excluding backup up until now. Lately ...
0
votes
0answers
52 views

Local storage for Server 2012 file share under ESXi

I have an ESXi 5.5 server with two local disks, one is 300GB and the other is 2TB. The configuration is for a small organization that will have two Windows 2012 servers - one Domain Controller and the ...
0
votes
0answers
569 views

smartctl error end_request: I/O error, dev sdb, sector

I have a Scientific Linux 6.5 server with a RAID with SSD disks. I see several error on dmesg file but there is no alert or errors provided by the utilities of the RAID controller (LSI controller). ...
0
votes
0answers
48 views

Creating file server failover cluster

I'm in the process of setting up a new file server cluster with a shared iSCSI disk. I've been through the setup of iSCSI and MPIO and the disk has been initialized, formatted and brought online. ...
0
votes
0answers
56 views

datatstax opscenter v 4.1.2 short-os collection failed

I've installed Datastax opscenter v4.1.2. It was bundled with Datastax Cassandra Community edition version 2.0.8. I'm running these on Windows Server 2008 R2 64-bit. When I open opscenter all ...
0
votes
0answers
82 views

Parted does not display partition created in IBM Storwize 3700

My server is running CentOS 6.5. I created a LUN on Storwize 3700 and had named it /dev/mapper/lun1 (I used multipath). And then I created a partition on it and formated it as ext4. When I type ...
0
votes
0answers
82 views

Error in XenServer iSCSI SR Creation (SR is not available)

I have a XenServer 6.2 with a Debian 7.5 VM which i use as iSCSI target. I have my target reachable by portal but i would make a Storage Repository available in my XenServer pool. Unfortunately, ...
0
votes
0answers
95 views

The `iostat` Command Describes a Non-Existent Block Device

The System An instance running on Amazon EC2 It is an m1.large EC2 instance The instance is running Ubuntu Server 12.04 LTS Here's What Happens... I wanted to measure disk IOPS on my system, and ...
0
votes
0answers
24 views

iscsiadm - how to disconnect from one of several connections to same target

I have a RHEL 5.x server with multiple connections to the same SAN (different targets). I'm consolidating some of the storage and want to disconnect one of the connections. I have unmounted the ...
0
votes
0answers
43 views

Cinder storage on windows storage server

I am planning openstack deployement and considering such solution: cinder volumes on Windows Storage Server: http://www.cloudbase.it/cinder-volume-on-windows-storage-server-2012/ and compute ...
0
votes
0answers
143 views

zfs recovery after hardware failure

My ZFS storage hardware failed including the rpool disks. I installed a new server and tried to import use zfs import -f poolname. I am able to see the pool and the disk utilized. But I am not able to ...
0
votes
0answers
639 views

Detect Fibre Attached Tape Drive in Red Hat Linux

I am running Red Hat Linux 6.4 and I have one Fibre Attached Tape Drive which is not visible to the OS. I also have the WWPN of the tape drive. The server has two Qlogic HBA Card with two port each. ...
0
votes
0answers
139 views

XenServer 6.2 - Free disk space is less than 20% on volume /

On XenServer 6.2 standalone instalation there is less free disk space than 20%. In my monitor I see this. I found there tons of *.gz in /var/log. Now storage is on 76%. Do you know how to solve ...
0
votes
0answers
76 views

EMC + powermt display + dead error

I have Linux red-hat 5.5 cluster machine that connected to EMC storage When I perform powermt display command I see under dead line the number 1 In place to get normal state as 0 Please ...
0
votes
0answers
65 views

Server 2012: Space not reclaimed after moving files off volume?

When I move files off of a volume on my Server 2012 computer, the space is not reclaimed and continues to show the amount of free space that was available before I removed the file. The volume in ...
0
votes
0answers
95 views

Data deduplication works vice versa

I have enabled data deduplication on one of my SSD's volumes and then run Start-DedupJob cmdlet with optimizastion parameter on this volume (Windows Server 2012). After dedup completed i check ...
0
votes
0answers
74 views

Storage of large number of files for a web application

There's an old discussion whether and application should store its files in a database or in the filesystem. Both have their pros and cons. I want to know if there's any specific system for ...
0
votes
0answers
59 views

windows storage server 2012 web administration

I needed to build a raid server in house for development. Being in MSDN we chose windows storage server 2012. We set up a storage pool and exercised fails and then re-built the server. I bumped into ...
0
votes
0answers
53 views

Unable to login into CISCO SAN switch management IP

when i try logging into the switch through device manager it throws the below error: "busy network,no rout,snmpd unresponsive" The physical connections between the san switch and the network switch ...
0
votes
0answers
63 views

Identical tables, different sizes?

I have transactional replication with updatable subscriptions going between a few SQL 2008 R2 servers (publisher is Enterprise, subscribers are Express). I need to add another subscriber, and come to ...
0
votes
0answers
311 views

ESXi 5.1 local datastore no longer accessable

I'm running ESXi and just recently rebuilt a raid array, and now an existing local datastore is no longer accessable in ESXi. The details: Original Configuration: 1x usb drive (on the backplane) ...