Tagged Questions

A SAN is a Storage Area Network, for providing block-level access to storage subsystems across a network.

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-2
votes
1answer
53 views

What tool/application (free or not) should I use to generate and write lots (TBs) of data, fast [closed]

I am testing a storage appliance and need to write TeraBytes of data to it. Using fio or dd takes days to write that much amount of data. Are there any (free or not-free) tools/applications, that I ...
0
votes
2answers
1k views

HP MSA2000, how detect faulty disks?

I have an HP MSA2012fc, it happened a few times that my large vdisk (6x 1TB raid 5) get offline, seems some disks are faulty, the event log only shows 2 of the drives had "bad blocks" and some disk ...
0
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0answers
492 views

No disks were found on which to perform cluster validation tests

I am trying to make a cluster of two Hyper-V machines running Windows Server 2012. There is a SAN available in which I have created several partitions to use such as J drive, K drive L drive etc. ...
1
vote
0answers
24 views

WS2003 network drive gets deactivated after restart

windows server 2003 OS runs sql backups regularly and periodically i have to restart once in a while. when the restart takes place the network drive(H) becomes deactivated which i do not understand ...
2
votes
2answers
211 views

Can Dell storage servers be upgraded to full OS installations?

I have a Dell NX3000- which is a Windows Server 2008 based unit. It has an additional cabinet full of drives attached, as well. I have spare licenses for Windows Server 2012 Standard that could be ...
0
votes
0answers
52 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
1answer
168 views

Expand PV on FC SAN - Linux doesn't see new size without reboot

Got Infortrend SAN attached through fiber channel to Ubuntu 10.04 Server. The HBA is Qlogic QLE2562. After expanding the LUN on the SAN, the server still shows the old size. If I reboot the server, ...
0
votes
0answers
164 views

ccs_tool addnode and addfence error invalid option — 'C'

I'm installing GFS2 on centos 6 with SAN and fiber channel. I followed this link: ...
-2
votes
1answer
115 views

Liferay cluster with SAN storage with ext3 [duplicate]

I'm deploying an liferay portal in a cluster which has 2 node load balanced, and config both to access to the same data location in a SAN storage devide. The problem is each node can not see the other ...
7
votes
2answers
741 views

How Fibre Channel Frames are populated and traverse a Fabric?

Trying to wrap my head around how Fibre Channel Frames are actually populated and sent through a switched fabric. I Understand WWNN WWPN, WWNN is a WWN of the actual HBA, and WWPN are the WWN of the ...
2
votes
2answers
74 views

vSphere Virtual Storage Appliance: adding physical storage

Right now, we have two physical ESXi (5.1) servers, each with a RAID 10 array of physical disks; currently, we're using one of these as the primary datastore for the virtual machines that reside on ...
4
votes
1answer
580 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 ...
0
votes
1answer
132 views

Accessing iSCSI LUN from OS X and Debian simultaneously

My setup is the following: Synology Disk Station as iSCSI target OS X 10.8 as client Debian as client I don't like to know that I should use WebDAV or similar file sharing protocols. I'd like to ...
5
votes
5answers
961 views

Using SAN Replication/Snapshots for SQL Server disaster recovery?

We have a web application that utilizes SQL Server 2008 on a single database server. All storage is local. For the past year we have been trying to get any form of SQL Server Replication to work ...
0
votes
0answers
51 views

SANHQ iSCSI network access

Trying to setup and configure SANHQ on a virtual server. Network I have patched 1 vmnic from each ESXi host into the iSCSI switch and configured the switch ports to access the same vlan as the san. ...
0
votes
1answer
391 views

SAN Storage shared disk, files copied from other servers cannot be seen without re-mounting

I have a SAN Storage connected to my servers using fibre HBA. Using multipath, I've successfully mapped the device, formatted it as ext3, and mount it to my file system. But the problem is, the host ...
4
votes
1answer
225 views

SAN Performance Slow

I have an iSCSI HP P2000 loaded with 12 x 300gb DP SAS drives. This is connected to 2 DL385 servers with 64gb RAM running XenServer. The SAN network is multipathed via 2 gigabit switches (4 x copper ...
2
votes
1answer
277 views

SAN: is it better to have separate LUNs for operating system and data of virtual machines? [closed]

We have an iSCSI SAN that will be used as backing store for virtual machines. We use Xen and will directly present the LUNs as block devices of VMs (so there is no file system with files on it for ...
2
votes
2answers
584 views

Are there any SAN vendors that allow third party drives? [closed]

I'm trying to convert our SaaS platform to SSDs for performance reasons, and wanted to use the new Intel DC3500. But our Dell SAN only accepts authorized Dell drives, and their only options are eMLC ...
0
votes
1answer
187 views

SAN HQ Write Latency

We have an iSCSI SAN setup with Dell's EqualLogic PS series SANs. SAN HQ reports a 30ms write delay. Is this 30ms for the SAN box itself to write the data to the disks, or does the 30ms also include ...
1
vote
1answer
281 views

Multi Port Fibre Channel Target with qlogic qle2462 to increase speed

I have a server running Nexenta with a QLogic QLE2460 in target mode. This works great. My problem is that with that I only get 1 port worth of speed (4gbps) to my switch. How can I increase the ...
0
votes
0answers
338 views

Server 2012 cluster - SAN volume - failover not working

The following configuration is available: - 3 HP SAN disk Enclusores / 2 SAN controller; HSV200 (FC) - 2 HP Brocade SAN switches - 2 HP blade servers, each with a QLogic FC HBA QMH2462 - SAN volume is ...
5
votes
1answer
176 views

RAID Recovery after Firmware issue

This may be a duplicate but I think the situation is different. We were having problems with a HP MSA2000 SAN, speaking to support they suggested that we upgraded the firmware to the latest version ...
0
votes
2answers
895 views

How to efficiently share host's folder with KVM guests?

I am configuring the service which stores plenty of files uploaded by nginx in /srv/storage dir on host system. These files are processed by worker KVM guests which may create new files or assign ...
1
vote
1answer
191 views

HP MSA1500 - getting past the 2TB limit?

I currently have (7) 300GB drives in the MSA1500. This is configured with RAID 5 which results in a 1.8TB drive, about 1.6TB formatted. I still have 7 more empty slots in the enclosure that I would ...
2
votes
1answer
281 views

Is it possible to resize a mounted LVM partition on the fly?

Situation: We have a server that has a 40GB SAN (Fiber Channel) mounted as /opt/application. If the LUN is expanded to 60GB, what needs to be done to expand /opt/application on the RHEL-server to ...
0
votes
2answers
519 views

New SAN causes HTTP 414 error

We have a IIS virtual directory (/Upload) mapped to a DFS share, which resides on a SAN. The DFS share was moved from SAN A to SAN B and since then if we try to access any content via the virtual ...
1
vote
1answer
332 views

Compatibility IBM DS3400 with 3TB sata disk

I've a IBM DS3400 with 4 disks sata 500GB and 5 disks 146GB SAS I want enlarge my sata storage with 3TB disks.. what i've to do? first question: Does IBM DS3400 recognize 3TB sata disks ? second ...
6
votes
1answer
364 views

Why MPIO instead of 802.3ad Team for iSCSI

Doing my first server to iSCSI target and I thought i would be off to a running start by teaming my NIC on the server (conventional 802.3ad team). However, from many online sources I see this is NOT ...
-1
votes
1answer
651 views

Dell Compellent SAN with ESXi 5.1 iSCSI

I have a Compellent SAN that I am trying to point to my ESXi server through iSCSI. In the Compellent UI: i've created a volume. It, of course, says the volume is offline until you map it to a server. ...
1
vote
2answers
199 views

Any good apps to visualize what's happening on an iSCSI Storage network

I'm a developer/SQL type person that has inherited an iSCSI SAN/Vmware setup in the past year. HP Lefthand P4500 SAN. Single iSCSI switch - HP Procurve 2810. Dell Equallogic PS6010E 10gb SAN (not used ...
1
vote
2answers
1k views

2 node 2008R2 cluster service won't start when just one node is booted

I'm a new to MSCS and I'm trying to understand something that recently happened. We have a 2 node 2008 R2 cluster using a witness disk (node and disk majority) over iSCSI SAN. I've read over some ...
3
votes
1answer
76 views

Is it possible to connect a FC HBA 8 Gb through 10 Gb Ethernet SFP+?

I have to connect an IBM Server with a QLogic EP2532 to an IBM DS3512 with a PMC PM8032. I need two 8 Gb FC LX 1310 nm SFP+ modules and since they seem to be hard to get, I thought would it be ...
1
vote
1answer
246 views

Does the Dell Equallogic PS5000E accept SSD drives?

I have an EQL PS5000E which with a recently expired support contract. I am running firmware 6.0.2 and given that this is an old array I don't plan to renew support. My VAR says that the PS5000E can ...
1
vote
0answers
100 views

Running SpinRite on SAN attached LUN with NTFS corruption

Got a customer that has an issue with NTFS corruption that is popping up on SAN attached storage. The LUN is RAID-10 (4:1 spindle ratio). The machines are Windows Server 2003 (64-bit), and they are ...
1
vote
1answer
181 views

Machine in read-only mode, do I really need to restart?

In a combination of SAN controller failover and loss of power, several of our machines ended up in read-only mode. After restoring from the failover, I restarted all machines. This got me thinking if ...
0
votes
1answer
393 views

P2000 G3 for VMware - one vDisk, Multiple RAID levels?

I have a dual controller P2000 G3 (SAS 6GB) hooked up to 3 ESXi hosts. There are 12x 600GB 15k rpm drives total, and I have set them up in 1 RAID10 vDisk to maximize performance+reliability. The ...
1
vote
1answer
109 views

Network issues regarding p4300 SAN - cannot manage p4300 through CMC

I am having an issue with my p4300 LeftHand SAN. It is a 2 node iSCSI system. Each one has 2 nics which are teamed into a cisco switch. The VMware cluster is connected into this switch as well with ...
1
vote
1answer
154 views

NetApp FAS2240 configuration choice

If we are purchasing an FAS2240 controller with two disk shelves of SAS disks, would we have better performance purchasing two (2) separate controllers and load balancing between them?
1
vote
2answers
1k views

Equallogic partitioning: pools, allocations, etc

I have some new budget coming up to buy an Equallogic PS6110xv. This unit has 24x600G disks and I'm looking at different ways of setting it up. The two primary uses will be VMs and MySQL. MySQL: ...
0
votes
0answers
57 views

How could I share data from a SAN?

I am considering deploying a SAN but I have found contradictory information. The thing is that I would like my cluster nodes to be able to read the same data from a unique source (I have a ...
0
votes
3answers
1k views

Is SAN storage better than NFS? [closed]

I have server with RHEL 6 with Apache 2.2.22 and NFS client (nfs-utils-1.2.3),and access NFS server on private network. My problem When the number of files increases my web site becomes slow and ...
1
vote
0answers
54 views

multipath -l vs -ll

What system information is multipath -ll reading that multipath -l does not? From the RHEL DM Multipath Guide -l Display the current multipath configuration gathered from sysfs and the device ...
0
votes
2answers
533 views

Mounting a mainframe file system on Unix (or vice versa)

We have a data conversion project where the overall process works this way: Mainframe legacy application will extract out their data into flat text files. Our application (running on AIX) will FTP ...
5
votes
2answers
446 views

What are the tradeoffs between using hypervisor- vs. storage-array-based snapshots as backup sources?

Suppose you have some virtual machines (running in eg. ESXi) that are stored on an iSCSI storage array (eg. EqualLogic PS4110). Now suppose you want to set up a backup and restore regime that looks ...
1
vote
1answer
990 views

HP P4000 / Lefthand : how to do a manual failover

We have a P4000 SAN with 2 nodes; we don't have a Failover Manager. Right-clicking a node in the management console does not offer a failover option, the best one seems to be "power off or reboot". ...
-5
votes
1answer
179 views

Contents of virtual disk on SAN appear different on multiple hosts

I have a Dell MD3200i SAN device and a virtual disk configured. Two Windows host servers connect to this virtual disk via iSCSI. Changes made to the virtual disk on one host do not immediately ...
2
votes
4answers
836 views

iSCSI SAN for vCenter Cluster

I'm looking to setup a SAN for a VMWare vCenter cluster of ESX hosts. I'd like it to be the primary storage device for VMs. There will be up to 10 hosts in the cluster eventually. I'm creating a ...
1
vote
1answer
376 views

Attach storage drive in a VM via iSCSI initiator or VHDX on the Hyper-V host

Our current 200-user infrastructure is based upon XenServer and a StarWind iSCSI SAN. The C: drives for the virtual server's OS are mounted in XenServer SR volumes which are in turn virtual hard disks ...
0
votes
2answers
171 views

SQL data and log files on Equallogic volumes

I've recently begun an exercise in looking into SQL best practices in terms of performance. I've read that it is recommended to put MS SQL data files (mdf) and log files (ldf) on separate volumes. ...