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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Mixing HBAs in a failover cluster?

I have a two server failover cluster, and for various reasons - they're on mismatched hardware. One has Emulex HBAs installed, the other Qlogic. I'd be twitchy about using two different makes/...
Sobrique's user avatar
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1 answer
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bbwc battery replacement on MSA1000?

Noob warning Would someone tell me where it's located at so I can replace it? This doc tells me it has one. http://h10032.www1.hp.com/ctg/Manual/c00147475.pdf I took the lid off of one this morning ...
mojo.average's user avatar
0 votes
2 answers
119 views

SQLServer Configuration - How to refute 1 drive on a SAN is same as multiple physical drives

I inherited a performance investigation problem where a SQLServer 2008( and also 2012 ) database has its Data, Indexes and Log files all on a single drive D: The D: drive is actually part of a SAN. I ...
J Cox's user avatar
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0 answers
271 views

Backup strategy for LVM file sytem on NFS file server connected to SAN

I have setup a server (CentOS) on which I have connected to several LUNs from a SAN via iSCSI then multipath, resulting in multiple physical volumes I can use for LVM (dm1 ...). From the file server, ...
Vince's user avatar
  • 371
3 votes
1 answer
255 views

Best practices for migrating to new SAN

My collaborator is splitting from his institute and wants help moving his application and data off the institute's network. And of course things are moving quickly. He has 12 TB of image data on a ...
niels's user avatar
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2 votes
1 answer
5k views

FreeBSD VMware and CAM status: SCSI Status Error

I'm running a FreeBSD 10.1-RELEASE-p19 on a VPS (VMware). My ISP is experience a rapid data growth, and these messages spontaneous started to show up in our logs a week ago. Sep 25 09:00:50 srv03 ...
Aknot's user avatar
  • 185
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2 answers
927 views

How Data Moving in Storage Area Network

I have a question about how data moves through a SAN. For example: Within an iSCSI SAN if Server A is mounted with a SAN disk and wants to copy data to Server B which is also mounted with a SAN disk, ...
dchochan's user avatar
  • 105
1 vote
2 answers
960 views

SAN: How to determine amount of LUN and CSV

We have inherited Hyper-V environment (2008 R2) with SAN storage (HP4500 hardware). Two hosts and two SAN's for redundancy. Whilst I understand virtual machines well, I guess, my knowledge of storage ...
Clear Sky's user avatar
1 vote
1 answer
336 views

Trying to add 2nd iSCSI VDS to XenServer, receiving error about LUN already used by other SR

I've stepped out of my comfort zone here. Some background. I just provisioned a 2nd vdisk+volume on a HP MSA2000. This SAN is has another vdisk+volume linked to Xenserver. I set the mapping to the ...
Philip Van de Walker's user avatar
0 votes
2 answers
168 views

First Exchange 2013 design for on-prem SMB. Did I miss anything? [closed]

Seeing as this is my first design, I'm hoping to make sure I haven't missed any glaring issues before deployment.
Digital ink's user avatar
-1 votes
1 answer
125 views

SAN, BROCADE and WINDOWS SERVER, filesystem trouble

I'm building a DR infrastructure using 4 Servers, 2 Eternus Fujitsu and Brocade 300 Switches. All configurations are done: zoning, paths, LUNs and so on. I have a situation: When I create a file ...
Alessandro's user avatar
0 votes
1 answer
692 views

NAUbackup - Xenserver 6.5 Backup Solutions

Has anybody every successfully used NAUBackups for xenserver 6.5 and had their backups go to a SAN storage repository? I see the default script backs up to an NFS share but I am trying to avoid NFS ...
jrd1989's user avatar
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-3 votes
2 answers
652 views

Is it possible for a UNC path to a SAN be disconnected through overwhelming I/O?

I'm just wondering whether it's possible for a UNC path to a SAN be disconnected through overwhelming I/O? If this is possible, how would one recover from it? This would be a Windows server ...
chuacw's user avatar
  • 145
3 votes
1 answer
2k views

Correctly mounting SAN volumes at boot time

I have a system running Debian Wheezy (7.8) that connects to a storage volume exported via iSCSI using the open-iscsi (version 2.0) software initiator. The iSCSI initiator correctly reconnects the ...
Jules's user avatar
  • 239
2 votes
1 answer
823 views

Are Dell PowerVault MD3200 EMMs compatible with the MD1200 chassis/midplane?

I have a Dell MD1200 chassis with PSUs, and I have yet to buy the EMM units. I was wondering if I could buy the MD3200 EMMs and have it function as an MD3200 or if I have to buy the MD1200 EMMs. I ...
Colton Fussy's user avatar
1 vote
1 answer
848 views

How do I expand a PowerVault MD3000i virtual disk?

I have a PowerVault MD3000i connected to a PowerEdge 1950 via iSCSI. The MD3000i has ~7TB of space. We want to use pretty much all of this space as one large file server configured with RAID 5. We ...
Michael H's user avatar
3 votes
1 answer
1k views

3PAR high service time overnight

I've a recently upgraded 3PAR array ( 3.2.1 MU1) , which overnight is getting some high iowaits - to the point where some paths to drop and servers to crash (particularly noticeable with e.g. Oracle). ...
Sobrique's user avatar
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0 answers
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Dual HBA's link status and WWN's

I try to configure a brand new SAN configuration with RHEL 6.6. SAN team requested host wwn's for zoning, which I believe are individual hba's wwn's. Anyhow here is my scenario: My hba's are dual ...
JavaRed's user avatar
  • 113
1 vote
0 answers
613 views

Simultaneous server crash in fail over cluster

I have 2 servers in a failover cluster. The cluster defines a shared 'ClusterStorage' drive. The drive maps to a SAN device through iScsi. Recently, the 2 servers rebooted on their own at the same ...
HashPsi's user avatar
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0 answers
446 views

Transfering Hyper-V VM os to boot Server directly from SAN through iSCSI

I have Hyper-V VMs (main application server 2008 R2 on IBM and MSSQL on DELL), both virtualized in Hyper-V 2012. I have discovered some performance offset when using virtualized OS (Terminal server) ...
Jozef's user avatar
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0 votes
1 answer
388 views

SAN storage I/O issues [closed]

I have a relatively busy application running on a dedicated server. The spec is 8-core Xeon(R) CPU E3-1240 v3 @ 3.40Ghz 16GB RAM 8TB RAID 10 80GB SSD for MySQL I use Wowza Streaming Server to ...
Wasim's user avatar
  • 145
4 votes
1 answer
3k views

Configure HP BL460c Gen9 with external iSCSI SAN

Hi I am very new to servers. I have a HP BL460c Gen9 server with 650 FLB controller in Legacy mode. I need to connect this to a external SAN through iSCSI. I am not able to go to the NIC BIOS by ...
Odin's user avatar
  • 151
2 votes
2 answers
2k views

XenServer, mapping SAN LUN to VDI

I have a few XenServer 6.2/6.5 hosts, and ZFS SAN datastore, providing iSCSI exports for VM storage. It's not an optimal solution to export huge 1-2 Tb LUN as XenServer LVMoiSCSI SR, because: a) no ...
Valentin's user avatar
2 votes
1 answer
360 views

QLE2462 adapter slow transfer rates

Last week, I bought two QLogic Fibre Channel adapters QLE2462 to start learning about Storage Area Network. I put it to two Dell PowerEdge T110 Servers and connected them using two LC-LC duplex cables....
Piotr's user avatar
  • 21
3 votes
2 answers
311 views

Providing shared file level storage from a SAN

I'd like to get some advice on a system I'm setting up. I'm not quite sure which way to proceed. The goal is just some basic user storage space (Clients are Linux, Windows, and mac) that is baked by ...
toomanyfiles's user avatar
2 votes
1 answer
2k views

NetApp - Snapshot Full

I am seeing a bunch of Snapshot Full warning events being generated recently from various volumes on our filers: A Warning event at 22 Jun 10:03 Alaskan Daylight Time on Snapshot ...
user avatar
3 votes
1 answer
185 views

NetApp cluster fail to start

I have a big problem with my FAS2020 (configured as iScsi storage for 2 esxi 4 server). I couldn't ping the 2 ip address of the FAS so I connect by the serial port with putty for monitoring the boot ...
FabioLog's user avatar
3 votes
1 answer
452 views

Apache Spark infrastructure - combining compute and storage nodes

I have an infrastructure question around Apache Spark, which I'm looking at rolling out in a greenfield project with (at most) approximately 4 TB of data used for modelling at any given time. ...
analystic's user avatar
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0 answers
843 views

Excel File is not being locked by a certain user

I have a file on a network storage. That file gets locked when its in use by somebody else, except by one person. I had about 5 people test it, and only one user does not get the File is locked, read-...
Onlytito's user avatar
4 votes
1 answer
13k views

Mounting Single San Drive on Multiple Hosts

I'm not sure exactly how to ask this, but here goes. We have a san. Within the san, we have the ability to connect a single volume to multiple systems as a raw disk. The Servers themselves would see ...
Gravy's user avatar
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1 vote
0 answers
229 views

Optimum LUN size for LVM created NFS share

I have access to roughly 80 TB of capacity via a SAN, which I want to set up as as 2 NFS shares: 1 share of 70 TB and 1 share of 10 TB. The 10 TB share will have full backup to tape, whereas the 70 TB ...
Vince's user avatar
  • 371
2 votes
1 answer
261 views

SAN performance too low?

I've noticed my new EMC VNX5200 SAN tends to perform better after "burning in" a partition. By this I mean filling the partition with different junk data and deleting everything a few times. Asked my ...
Razvan Zoitanu's user avatar
-5 votes
1 answer
434 views

Email storage server - NAS or SAN? [closed]

I'm looking for storage server that could store ~34TB (34 SSD disks of 1TB) of emails. I'm thinking about two NAS QNAP storage servers, but I'm not sure if it's OK to use NAS instead of SAN. Any help?
ServerGeek4000's user avatar
1 vote
3 answers
2k views

Need the "msacli.exe" file for monitoring P2000 SAN. IOPS values needed

Hi i need some performance stats from our MSA p2000 SAN. The Problem is that i want to have the values i get when i connect via SSH and use the command "show vdisk-statistics". This command shows me ...
frupfrup's user avatar
  • 853
0 votes
0 answers
73 views

Proper Partition Alignment

I'm trying to follow the advice from this TechNet article about partition alignment. Our San is an EMC, the disks are in a 4 disk raid 10. This services an I/O intensive application, 60:40 write:read. ...
user avatar
1 vote
1 answer
162 views

Storage volume is not avaliable from second node AIX 6.1 OS

My environment comprised AIX 6.1 OS installed over six physical servers and connected via brocade switch to DS8000 SAN storage. I am aiming to build HACMP cluster on two physical machines in a way ...
Greg P's user avatar
  • 11
-2 votes
1 answer
63 views

Which VLAN should a secondary server NIC go on?

We have just upgraded our SAN backend with 10 Gbps connectivity and we have a few Windows servers that currently use a 1 Gbps connection, which we would like to upgrade by adding 10 Gbps NICs to. Part ...
William S.'s user avatar
1 vote
0 answers
253 views

Windows Server 2012R2 Backup

We have deployed Windows Server 2012R2, which by using the Windows Server Backup was backup on the drives connected from SAN. SAN disks connected through multiple paths using Windows Multipath-IO. ...
cortes_'s user avatar
  • 11
1 vote
2 answers
5k views

Quick format of LUN in Server 2012(R2) hosted on a Thin provisioned SAN vol takes ages

I've now experienced this issue with 3 different storage vendors, using 3 different CNA adapters (all FCoE though), so I'm fairly sure this issue is not isolated to a specific storage vendor (seen on ...
N-3's user avatar
  • 118
1 vote
0 answers
53 views

brocade 6520 san switch is not supporting in hp storage essential

I was trying "discover" Brocade 6520 SAN SWITCH in HP Storage essential, is not supported but the same configuration same speed switch "brocade 6510" is able to discover. how to make brocade 6520 ...
Akhil Narayanan's user avatar
-3 votes
1 answer
316 views

Why shared-disk architecture is beneficial for Oracle RAC? [closed]

Oracle RAC is using shared-disk architecture. I cant see why this can make the whole product highly scalable or available ? the shared storage can itself turn into a single point of failure. and if we ...
Armin Balalaie's user avatar
1 vote
1 answer
1k views

Merge Live VMware hosts into existing vcenter

We currently have 3 VMware hosts, all running ESXi 4.1. They are all HP DL380 G7's, two of them having dual Xeon E5620 cpus with 96GB RAM, and the third having dual Xeon E5645 cpus and 64GB RAN. The ...
James Edmonds's user avatar
3 votes
2 answers
1k views

Multiple iSCSI LUNs to one Server

I'm reasonably sure i'm ok to do this, but I would love some confirmation. Simple question, can I have two LUNs from the same SAN attached to the same server? More detail: I have a HP MSA2000 SAN, ...
donrosco's user avatar
  • 130
-1 votes
1 answer
342 views

Moving large size directory using rsync

I plan to move from linux o/s a directory which is mounted on SAN(offboard) to external storage for backup. The dir size is 14TB. I do have experience moving files in/out using rsync but never done ...
asadz's user avatar
  • 145
0 votes
1 answer
357 views

6 GB/s SAS RAID 10 (6 Drive) vs. 3 GB/s SAS RAID 10 (14 Drive)

I am running MS SQL 2014 Standard and have a Dell MD 3000i iSCSI SAN. Rough specs: Dell R610 With PERC H700 controlling 6 x 2.5" 15K SAS drives (6 GB/s) Dell MD3000i with 14 x 3.5" 15K SAS drives (...
Neal's user avatar
  • 409
8 votes
2 answers
1k views

"Mandatory" free space on a SAN?

I'm not an expert of SANs, I'm writing here to get some clues on continuous and exasperating problems we're having which our supplier seems not to be able to solve. we own an ENHANCE ES3160P4 SAN ...
z2k's user avatar
  • 103
-1 votes
1 answer
257 views

One SAN connecting to Hyper-V and VMware [closed]

my customer currently has two hypervisor types in place - using VMware for Linux systems and Hyper-V for Windows. They currently have different storage infra for each of these platforms which cost ...
user169323's user avatar
1 vote
3 answers
10k views

IBM DS3400 - how replace a good disk

I've to replace all my disks with other bigger ones. I read in the manual: Never hot-swap a drive when its associated green activity LED is flashing. Hot-swap a drive only when its associated amber ...
CSG's user avatar
  • 737
3 votes
1 answer
177 views

Undo adding disks to a RAID-Z Configuration

I've started running out of space on one of my data pool and decided to expand it by adding some extra disks. Below is what it looked like before extending: NAME STATE ...
user124381's user avatar
2 votes
1 answer
4k views

iSCSI enterprise target and client both on debian give invalid iniatorname error

I have two Debian Wheezy machines and am trying to set up storage for one of them on the other's disk using iSCSI (they do not have synchronized users, so NFS won't work for this application). I have ...
Jules's user avatar
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