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

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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: ...
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1answer
110 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 ...
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2answers
628 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 ...
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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 ...
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1answer
534 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 ...
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1answer
127 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 ...
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5answers
851 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 ...
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50 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. ...
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1answer
366 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 ...
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1answer
211 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 ...
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1answer
246 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 ...
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2answers
542 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 ...
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1answer
170 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 ...
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1answer
271 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 ...
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0answers
322 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 ...
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1answer
169 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 ...
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2answers
814 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 ...
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1answer
183 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 ...
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1answer
247 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 ...
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2answers
504 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 ...
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1answer
308 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 ...
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1answer
341 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 ...
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1answer
597 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. ...
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2answers
196 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 ...
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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 ...
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1answer
74 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 ...
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1answer
237 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 ...
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0answers
95 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 ...
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1answer
173 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 ...
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1answer
365 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 ...
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1answer
106 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 ...
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1answer
151 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?
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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: ...
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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 ...
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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 ...
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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 ...
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2answers
502 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 ...
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2answers
434 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 ...
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1answer
929 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". ...
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1answer
166 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 ...
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4answers
787 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 ...
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1answer
354 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 ...
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2answers
165 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. ...
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2answers
1k views

How to Shrink a Volume on Equallogic SAN

I extended a disk on a DB server (so we could temporarily restore a database) and I would like to shrink the volume back down now that the data has been deleted. I deleted the data and shrank the ...
5
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1answer
558 views

Is using a NAS with hot swap disks an effective way of cycling backups?

We are looking at improving our backup solution. We don't have a huge amount of data to back up (currently ~500GB) which is backed up nightly onto an external HD. We have 3 of these HD, with one going ...
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1answer
259 views

Benefits of SR-IOV when most communications are between guest VMs

I am about to buy a new server to run VWware ESXi (Dell T320 w/25GB + RAID10). It will mainly be running a Linux host running web applications and a Windows file/database server. I plan to use AWS ...
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2answers
158 views

When is iSCSI Required or Most Useful? [closed]

Background: I have two SANs (Dell Equallogic PS6100E, though not necessarily an eql. question). I have a NAS that connects to them (FS7600). That NAS is on the regular network lan, but has it's ...
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2answers
109 views

Is it ok to run 15k.6 and 15k.5 SAS disks in a SAN together?

I have a SAN (HP MASA 2012) running seagate Cheetah 15k.6 drives. One has failed and I have a replacement drive that is the same except for it is a 15k.5 drive. Is this ok to run in the SAN? What are ...
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2answers
112 views

Building a small server setup - need storage and reduncy - NAS or SAN? [closed]

I want to build a small server setup. With 2 load balancers, and at first 2 webservers. I need a setup where both webservers would be able to upload and download files from a common storage solution. ...
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1answer
68 views

Fast storage for a server [closed]

I have created a search engine which is implemented in Java. I want to put this program to a server and test it. My program is very dependent to disk I/O and any improvements to disks would directly ...