Questions tagged [storage-area-network]

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

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802.1x or mac port security on SAN switches

I'm going through DISA security hardening on our network devices. Our iSCSI SAN network uses 2 Cisco 2960G layer 2 switches. The SAN consists of 2 HP P4000 devices. Servers are 3 Dell R710s in a ...
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San Performance - Number of servers connected

Does anyone have any experience of the Ibm DS3400 san. Have found a system with about 30 servers connected to it (mostly virtual machines including all the operating system drives) including 2 sql ...
u07ch's user avatar
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6 answers
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Windows share: The specified network name is no longer available

We've got an EMC NX4 SAN box serving a CIFS share to a number of Windows Server 2008 R2 app servers. The app servers are using the CIFS share to serve lots of image files (~2500 ops/sec on the share), ...
Mark S. Rasmussen's user avatar
2 votes
3 answers
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15K RPM drives fail

For 3 years we had an LSI SAN with 48, 300GB Segate Cheetah 15K.5 (Model ST3300655FC) 3.5-inch drives. There are about 7 drives failed total. There bulk failed recently. Six drives since May 2010. ...
Aleksandr Levchuk's user avatar
1 vote
2 answers
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Linear Performance Scalability with HP San Solutions

I need a San Solution with linear scalability in size as well as in performance. From what I know, with a Modular Smart Array solution such as the P2000/MSA-class solutions from HP, even with a dual ...
Berzemus's user avatar
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Fast disk access in virtualisaion

My organisation is going to invest in either RedHat virtualization with KVM or VMware ESX. Some of our work involves disk intensive bio-informatics stuff such as BLAST, which we have found to mostly ...
Pengin's user avatar
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Type of Storage for VMware View Implementation

We're doing a virtual desktop pilot and I was wondering what kind of SAN storage is commonly used. I've heard conflicting reports of SAS/SATA disks or even SSD or large read/write cache settings. ...
ahill's user avatar
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What are SAS external storage options (Promise, Infortrend, SuperMircro, ...)?

We are looking for a ~32T external storage solution for two 48-core AMD servers. These will be used for a small Linux OpenVZ cloud for CPU intensive web-servers and data warehousing. Dual path with ...
Aleksandr Levchuk's user avatar
1 vote
1 answer
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Utilizing greater than 2 TB unformatted LUN in the local ESXi datastore

I'm about to create a very large file system for Windows Server and client to use (NTFS), by using Openfiler as the iSCSI initiator.[using any other free appliance will also be considered] Can ...
Senior Systems Engineer's user avatar
1 vote
7 answers
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Which SQL files benefit the most from RAID 10 vs RAID 5?

Assuming I can't put everything on RAID10, which parts of SQL (Data files, log files, TempDB, Backups, etc) benefit the most from being on RAID 10 instead of RAID5? Does it depend on the type of ...
BradC's user avatar
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lpfc + multipath + ubuntu - path keeps switching

I am having issues configuring multipath using Emulex (lpfc). Although I do not detect data corruption the SAN administrator has a tool that shows that the paths are being switched every 20 seconds or ...
A4A's user avatar
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Moving SQL Server 2008 R2 Databases to Different SAN location

I have a sql instance up and running with the data files located on a SAN drive. I need to move this instance to a different SAN. I have server/instance on san drive p:\ in rack 1. I have a new ...
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where do i get .mdb and .pst file on my control station

I need help from you again, The customer has asked to locate for .mdb and .pst files .All this is required for the migration process.I 'm not involved while the migration is going on but I 've been ...
wildchild's user avatar
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4 answers
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SQL Server: Shared disk cabinet performance

Our server admin has hatched a plan to move all storage to a central disk cabinet, and have every server use that. We have a central SQL Server that is heavily use (200+ concurrent users) and I am ...
Andomar's user avatar
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Is it possible use replicated storage in a network RAID 1 fashion?

I was wondering if there was any way to replicate the functionality of the HP StorageWorks P4000 Virtual SAN Appliance using open source tools? Basically the HP VSA lets you replicate in the same ...
Flo Woo's user avatar
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File Server - One large LUN or multiple smaller LUNs?

We're about to replace a bunch of kit (servers, SAN etc.) and migrate our servers across from their current platform. Our file server has around 8tb of data on it right now, spread across 5 LUNs (all ...
flooble's user avatar
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Combining Dell MD SAN with HP MSA60 DSA?

Would it be possible to combine a Dell MD SAN with a HP MSA60 DSA, or am I forced to use it with other HP StorageWorks products? The MSA60 spec reads: Storage expansion: Supports 1+3 cascading off ...
3molo's user avatar
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Is ISCSI flow 1MB/sec good for web server?

In general, is it good practice to use iSCSI accessible SAN (Storage Area Network) for data storage in server?
NARKOZ's user avatar
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3 votes
1 answer
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Software to repliacte data in a Cluster Shared Volume in real time from DAS attached to Server 2k8 R2 HyperV cluster to an identical setup?

Are there any software solutions that will be able to handle replicating the data from one SAS based DAS (a Dell MD3200) attached to two R410 servers running clustered Server 2008 R2 Hyper V instances ...
Chris Magnuson's user avatar
1 vote
2 answers
43k views

what is the throughput of 15K RPM SAS drive? [closed]

bandwidth for a single 15K RPM disk ? 10MBps or 100MBps?
JMS77's user avatar
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6 votes
3 answers
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IOMeter - What values should I test with?

In some ways I guess this is a piece of string question, however even if there is a "this fits most situations" answer I have no idea what it is, so... I have a SAN on evaluation, an HP P4000. I'd ...
flooble's user avatar
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1 vote
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anyone using coraid storage: ATA over ethernet?

can these enclosures be populated with SATA or SAS drives purchased elsewhere? recently Dell has made custom size slots on their PE T710 servers on which you could only place drives purchased from ...
JMS77's user avatar
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HP Lefthand P4000 - Anyone got one?

If so how are you finding it and how do you have your multi-site setup configured? We're looking more and more likely to go the P4000 route and I'm looking at how things like failover work between ...
flooble's user avatar
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Replacing LeftHand SAN Hard Disk Outside of Warranty / Service Contract

I am working with 3 clusters of LefHand SAN iSCSI storage arrays. The modules are all older NSM 150s and NSM 160s (super micro server hardware, sata disks). The workload is low priority and all ...
J.Zimmerman's user avatar
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2 answers
4k views

VMs on SAN vs NAS

I'm about to deploy XenServer on a DELL R900 and haven't finalized on the Storage yet. Would typically be running like 40 VMs on the server with requires about 2TB of storage. What should I choose ...
15 votes
3 answers
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SAS vs. Nearline/MDL SAS - What is the difference?

As subject I guess, looking at SAN's and most vendors offer 10k or 15k "proper" SAS drives, many also offer 7.2k MDL/Nearline SAS drives. Does anyone have an authoritative explanation of the ...
flooble's user avatar
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1 vote
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scalable storage solution using ZFS: OSOL / Nexenta?

some one commented that ZFS is not a distibuted file system and thus more suitable for storage from a box than a cluster. is it possible to start small as NAS with Nexenta / opensolaris and scale up ...
JMS77's user avatar
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0 votes
2 answers
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High Disk IO spikes in HP Windows 2008 Server with SAN and Oracle 11g

I have a HP Proliant BL68C G5 server, running Windows Server 2008 R2 Standard edition server that is being used as an Oracle 11g data-server. The machine itself has 20gb of RAM, dual Xeon 2.4ghz CPU's,...
Wes Price's user avatar
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Rebuilding a SAN

Because of a mistake in adding disks earlier, I am going to rebuild my SAN. It is an HP MSA2000, and I am using 2 Windows Server 2008 servers in a cluster. Please review my plan and let me know if I ...
jherlitz's user avatar
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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 ...
wildchild's user avatar
  • 179
0 votes
4 answers
2k views

Backup alternative to tape - inexpensive SAN? [closed]

I'm pricing SANs and the cheapest I can find are 36k; we're limited in our department to 25k in purchases before they go for approval. I'd love to get rid of tape backup, as they are cumbersome and ...
Caveatrob's user avatar
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2 votes
3 answers
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recommend storage platform: Gluster Vs Nexenta

there is a new release version 3.0: http://www.gluster.com/community/documentation/index.php/Gluster_Storage_Platform has anyone tried this for VM storage? how does this compare to any ZFS based ...
JMS77's user avatar
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4 votes
5 answers
7k views

Building cheap SAN

Note: Some of you may ask, why not just use a cheap hardware solution. The solution is not so cheap in the country it has to be installed in, with as much as 100% import tax on high end technology. ...
Erik Funkenbusch's user avatar
0 votes
1 answer
117 views

making the share read only

I 'm sorry to come over again, I was thinking of making the share read only from celerra manager( CIFS only) by R clicking on file system. "the NAS share (\nas12\termemployee$) to read-only to ...
wildchild's user avatar
  • 179
1 vote
2 answers
404 views

File server - going beyond 2TB

Our current main filer server is a Windows 2003 R2 cluster with 3 2TB disks connected to a backend SAN. Our main issue right now is 1 of the 2TB disk is getting full. What options do I have? Mount ...
user avatar
3 votes
4 answers
4k views

SAN choices for two server ESXi 4.0 cluster with vMotion and HA

I'm planning to move two separate vmware ESXi 4.0 hosts into a cluster to use the vMotion and HA capabilities of ESXi (essentials plus). Right now we have a dev vm host and a production vm host and ...
Peter's user avatar
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1 vote
4 answers
270 views

Fix things first or virtualize and then fix

Warning: This is a very general question. I've walked into an environment where everything is working for the most part but it is held together with scotch tape (don't want to offend the duct tape ...
PHLiGHT's user avatar
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1 vote
1 answer
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Multiple RAID controllers plus SAN volumes during CentOS 5 kickstart install

Okay so I ran into a situation while trying to perform a CentOS 5.5 PXE boot kickstart install on a Dell PowerEdge 2950 with a PERC6/i RAID controller along with dual LSI Logic/Symbios Logic SAS1068 ...
Jeremy Bouse's user avatar
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2 votes
3 answers
163 views

Does high end hardware storage use files as iSCSI targets internally?

Is it correct that if you create an iSCSI target on a high end hardware storage, then what it does is to create the target as a file on a file system? I mean, that can't be good for performance?
Sandra's user avatar
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0 votes
1 answer
368 views

Drobo Pro or SAN for backups

I have multiple offices and was thinking of using two Drobo Pros as a storage location for my backups, with one at each site being synced. It seems like on the surface its a cheap alternative to a ...
PHLiGHT's user avatar
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1 vote
2 answers
250 views

What could be the best practice while allocating so that I/O performance is high

I have a question on planning. Recently, I got a request to create 2 625GB Luns (clariion cx-240), FC Connected, to ESX server 4.0 (four new hosts). I don't know the application they would be running. ...
wildchild's user avatar
  • 179
4 votes
1 answer
4k views

iSCSI / SAN / Cluster / multiple NICs failover

Got a problem with NIC failover with iSCSI. Setup: A server with 3 NICs. One NIC is local network, other 2 are SAN. Using Microsoft iSCSI Initiator. A managed network switch. A QNAP SAN, connected ...
Dami's user avatar
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0 votes
1 answer
519 views

is provisioning storage in VMAX difficult?

is provisioning storage in VMAX difficult? I am not getting any sort of training from my manager .There's going to be requests fro the clients in provisioning storage to their hosts (cluster, stand ...
wildchild's user avatar
  • 179
-1 votes
2 answers
480 views

Can anyone identify the hardware/software called "EMC Flex 8-16"?

I have discovered a Description entry ("EMC Flex 8-16") in an systems audit which I can't identify. I have asked the Vendors, but have not yet heard back. I'll post an answer myself when I find out. ...
Kenny's user avatar
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0 votes
2 answers
356 views

Extending storage space with SAN/iSCSI

I'll be creating a Linux storage server with several TB capacity using a hardware RAID array. But I was wondering, what are my options for extending it in the future? To be more specifiec, if I ...
Halfgaar's user avatar
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1 vote
3 answers
116 views

sql server and vms

I need to deploy some vms for sql servers, how do you plan the san volumes ? put os, data & log files in different vmdk ? or different volumes ? or put all in same volume ? Also , is it good ...
user40997's user avatar
1 vote
3 answers
329 views

Please advice on Storage Hardware ( NAS, SAN....) [closed]

Dear sirs, I would be moving to Storage team in a few weeks from my current Domain without any experience. Kindly guide me and advise me how and what knowledge should I prepare to grab for this great ...
Guruprasad's user avatar
2 votes
1 answer
8k views

clearing port for errors

I have an issue here, a blade has gone faulty a couple of days back. Now one of the servers (Unix) is having I/O errors. I've troubleshooted from Clariion end and everything is fine. I need to clear ...
wildchild's user avatar
  • 179
1 vote
1 answer
2k views

How do I resolve an "Invalid Transaction" error saving a zone config in Brocade Web Tools?

When trying to save zoning changes in the Zone Administration tool in Brocade Web Tools, I get the status "Failed to commit changes to fabric" and the messages window shows: --- start of commit (...
Frank Szczerba's user avatar
0 votes
1 answer
1k views

How to set a read only mode for a share in celerra

I need to find out if the Celerra NAS (NS 700 Model) in my location allows me to set a read only mode for a share. Specifically, this is for the terminated employees folder. They want to be ...
wildchild's user avatar
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