0
votes
1answer
24 views

Dirty Cache Dell Equallogic Storage Array

has anyone ever run into a dirty cache issue with a Equallogic SAN. Even after replacement of the controller cards in the Equallogic Storage Array fails offline with a dirty cache. I have listed ...
5
votes
1answer
41 views

Netapp raid scrubbing on a V-Series

My V-Series NAS is running ontap 7.3, and gets all its disk from a SAN. LUNs are provisioned to the Netapp, which puts them into a raid-0. The SAN itself, of course, uses RAID with scrubbing and ...
7
votes
2answers
125 views

Array free space requirement

The general rule of thumb is don't use more than 80-85% of your capacity, otherwise performance degrades sharply, and other bad stuff may happen. On a 8TB array, this comes out to around 1.6TB of ...
1
vote
1answer
53 views

IBM V7000 firmware upgrade effect on mounted LUN

We've IBM storwize V7000 Storage where the firmware is going to be upgraded to latest version.. This will require a reboot to the storage. I've got arround 10 LUN's (almost 10TB) coming from this ...
0
votes
1answer
177 views

Dell PowerEdge R710 direct-attached to HP MSA 2040 SAN [closed]

I have no idea about Direct attached storage; I do not know that it is possible to do. I plan to use HP MSA 2040 storage to direct attached with my dell Power Edge R710 via Fiber Channel. What do i ...
2
votes
1answer
262 views

How to configure multiple iSCSI Portal Groups on a EqualLogic PS6100?

I am working on a migration from a VMware vSphere environment to a Hyper-V Cluster utilizing Windows Server 2012 R2. The setup is pretty small, an EqualLogic PS6100e and two Dell PowerConnect 5424 ...
2
votes
1answer
30 views

MSA2312i shows duplicate enclosures?

I just installed a redundant controller in my MSA70. This is in use with our old MSA2312i SAN. Now I'm seeing two entries for 'Enclosure 3' (the associated MSA70 disk shelf) in the UI. It appears ...
2
votes
1answer
149 views

Beowulf cluster storage setup [closed]

I'm a Computer Engineering student working on a project with a Verari blade cluster, a bit outdated for today standards. I had acquired some Unix experience but I'm not an expert at all. This Verari ...
4
votes
1answer
128 views

Can someone explain the important differences between fabric, point to point, and loop on a fibre san?

I have a fully redundant HP 8/20q FC SAN that has been working well, but as I dig deeper into things looking for more performance, I'm quickly at the end of my knowledge when it comes to FC ...
0
votes
3answers
119 views

Linux: Get information/stats about storage network

I want to know as much info as possible about the SAN a linux server is connected to. What commands will give me the most comprehensive view? Simply knowing the WWN of LUNS doesn't do much for me. ...
2
votes
6answers
247 views

SAN zoning advantages and disadvantages

We just got a SAN, and I will be assisting in installing it and configuring it, I asked someone to explain to me what we will gain using SAN zoning, but he was unable to answer my question, could some ...
1
vote
1answer
122 views

how to determine the iscsi target's naa in linux

I understand that iSCSI uses iqn / eui to identify target LUN. Once I have discovered the iSCSI target and logged in is there a way to determine the LUN's NAA id for the remote target from a linux ...
5
votes
3answers
240 views

Brocade mirror ports

I'm getting a bunch of brand new condor 3 based switches and these things have a feature I'd like to use called port mirroring. Essentially, a mirror port can be configured to show all traffic being ...
1
vote
0answers
45 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 ...
4
votes
3answers
211 views

Should I worry about Split I/O in a SAN?

We have a NetApp Storage system presenting LUNs to a few Hyper-V clusters. When running a system performance trace (in perfmon) on a 2008 R2 there's a warning about a "high level of Split I/O". ...
0
votes
0answers
117 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
319 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. ...
1
vote
1answer
40 views

Veritas and VNX LUN Expansion

I have an EMC VNX Storage array and a front end Linux server running Veritas. A 4TB lun has been assigned from a diskpool on the VNX and presented to the server where Veritas has split it out into ...
6
votes
1answer
115 views

IQN Naming convention

I've seen a lot of information about how IQN's should be formatted, but there's not a lot of information on how to build them. I'm kind of a newb when it comes to iSCSI, and i have it working, but I'm ...
11
votes
4answers
763 views

Disk Speed Performance in a SAN

We are currently looking into buying a SAN, and have some concerns over the speed of disks we are going to put into the array. We would normally have gone for 15k disks over 10k every time, but one of ...
2
votes
1answer
646 views

XenServer 6.1 Reports Wrong Storage Amount in XenCenter

We're using XenServer 6.1 Advanced on three blades in a pool. I'm in the process of moving storage from an old SAN to a new SAN using Storage XenMotion. So far, so good! I discovered though, on a LUN ...
1
vote
1answer
34 views

Backup slowness after changing the SAN switch

We have a netbackup environment Recently we changed the connectivity of two of our sql servers(cluster servers) from one SAN switch(MDS 9509) to another (MDS 9513) followed by which we are ...
0
votes
2answers
209 views

Cannot join CIFS server to a active directory domain

We have a VNX5700 in our environment , it had two datamovers(one as primary and the other secondary). Recently we added a third datamover to the array and configured it as an active DM , so we will ...
1
vote
2answers
219 views

SAN newbie: What kind of fiber cables do I need to connect to the front end ports on my EMC CX300

I have an old CX300 I'm messing with and I cant determine what kind of HBA\fiber cables I need to connect a server to the front end ports on the DPE2. The hardware reference doesn't give me any ...
2
votes
4answers
100 views

SAN newbie: Using a server like an ISCSI gateway for a purely FC SAN device

I am very new to SANs and have inherited an old EMC CX300 to play with. The CX300 is purely FC, but I'd like to experiment with ISCSI as well without having to purchase an expensive ISCSI gateway ...
0
votes
2answers
823 views

XenServer Shared Local Stage

I am new user of XenServer 6.2. I have multiple servers connected to Pool/Cluster. Each server has 4 HDD with sw raid10. I would like to make local storage shared because of need quick migration. ...
-2
votes
1answer
49 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
992 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
votes
0answers
51 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 ...
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 ...
1
vote
1answer
168 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 ...
-1
votes
1answer
484 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
178 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 ...
3
votes
1answer
70 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 ...
0
votes
1answer
313 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
802 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". ...
1
vote
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 ...
0
votes
2answers
107 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. ...
-1
votes
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 ...
5
votes
3answers
692 views

Recommendations: configuring a 10GbE NAS stack for virtualisation storage

I'll try as hard as I can to word this so it is not considered a shopping list. We have been successfully running a dev/test ESXi environment for some time, with a couple of Dell PE2950III servers ...
1
vote
1answer
223 views

New RAID1+0 in P2000 storage

I have P2000 SAS storage with RAID6 configured on 8 disks 1TB 7k2rpm. I want to add RAID1+0 with 4 SAS15K 300GB. The question is, does this storage support this setup? Should it work without any ...
1
vote
4answers
1k views

Why use NAS for file access, why not SAN? [duplicate]

Possible Duplicate: What is the use-case for NAS on a mid-to-high end storage array? SAN is block level, NAS is file level. Block level means applications access blocks,while in file level ...
0
votes
2answers
153 views

iscsi versus non-iscsi san?

We are considering adding a SAN. I have two choices right now, the Dell MD3000 and the Dell MD3000i, 15 x 146Gb san drives. Naturally the latest model is more expensive (2x as much), but can ...
2
votes
1answer
391 views

Configure Windows to Read/Write Shared SAN

I am working on building a NLB cluster to load balance for JavaEE portal. Both are Virtual Windows 2008 R2 and connected via Fiber Channel to an EMC SAN Storage. They should read/write files into the ...
1
vote
1answer
681 views

How do you get iSCSI multipath to discover new LUNs that have not been partitioned yet?

Oracle Linux 6.3 iscsi multipath shows LUNs with existing file system but not the raw block devices that have not been partitioned yet. When I run multipath -ll it will show a LUN that has previously ...
2
votes
2answers
158 views

How to use new disk space after extend attached SAN disk

I have extended the space of my SAN vDisk from 1TB to 1.2TB, but Windows Explorer doesn't show the new size. After resize the vdisk in the SAN Manager, the Disk Management utility shows the 200GB ...
0
votes
1answer
299 views

Generalized strategy for file server virtualization in Xenserver [closed]

I'm not shopping as much as I'm looking for some guidance on good idea / bad idea strategies. I'm sure I'm not in the "best practices" budget range. Currently, I have 3 dell poweredges running ...
4
votes
3answers
1k views

Sparing level on HP EVA 4000

One of the disks of our EVA4000 died today. This diskgroup (all volumes vraid5 with sparing level 1 and almost no space left for more volumes, 1TiB drives) is being rebuilt with "spare space" right ...
2
votes
2answers
180 views

San storage HP p4300 g2 iscsi volume

I have a p4300 SAN storage in my network, I create a volume and assign that to TWO servers, i cant sync data between two volume and any change in one of them dont appear to another, how i can do that? ...
5
votes
4answers
222 views

Storage Architecture

Related to this question: When building a storage area network, do storage administrators generally create the physical disk arrays based on I/O type (sequential versus random access) and provision ...