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

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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 ...
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1answer
34 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 ...
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0answers
25 views

VMWare ESX and storage.redundancy.lost

Not so long, i found problem on my server: Mar 3 21:20:17 Hostd: [2015-03-03 21:20:17.520 6FFC2B90 verbose 'StorageSystem'] SendStorageInfoEvent() called Mar 3 21:20:17 vobd: Mar 03 21:20:17.521: ...
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1answer
46 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 ...
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2answers
34 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, ...
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17 views

VDI LUN and RAID Group design optimization

I have a shared storage SAN for our VDI environment that was configured in a specific way by a third party and I was wondering what (if any) was the benefit of the design. The SAN is divided into ...
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1answer
55 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 ...
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1answer
40 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 ...
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1answer
393 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 ...
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1answer
32 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 ...
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1answer
74 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 ...
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1answer
26 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 ...
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1answer
86 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 ...
0
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1answer
41 views

Un-cluster storage added to Windows Failover Cluster Manager

Forgive me if I'm mixing up terminology, I'm a DBA and trying to see if I can un-do my error here. Background: I was adding a 3rd DR site node to a Windows Server Failover Cluster to utilize AlwaysOn ...
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0answers
36 views

Warning and alarm flags on brocade SAN switches — sfpshow

Can anyone explain what the error codes mean on sfpshow command output please. I didn't find any documentation on those. We have ports with these outputs: Alarm flags[0,1] = 0x5, 0x40 Warn ...
3
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2answers
75 views

Differences between HP and EMC SAN

I've managed Dell's EMC and Equallogic SANs in the past. I was recently put in charge of a Hewlett-Packard P2000 SAN. HP and EMC use slightly different terminology. I'd like to confirm I understand ...
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0answers
11 views

On-Site Backups: JBOD on Existing Array, or 2nd Array?

We're reconfiguring our on-site backups (using Veeam if it makes any difference) and I have a decision to make. I can either purchase an entire new disk array and use that, or I can purchase a JBOD ...
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4answers
112 views

What trouble will I have when running a SAN past its support lifetime?

We are replacing a Clariion CX320 SAN because it is old (7.5 years). It has been otherwise very reliable. Yes, we have replaced a lot of disks, battery modules, and maybe even one of the ...
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33 views

Does a dead LUN path cause an increase in I/O times on the remaining LUN path(s)?

We use an EMC SAN appliance. There are 2 'paths' from the cluster to the SAN. Today we experienced that one of the LUN paths was 'dead' (as reported in the windows event logs). Presumably the ...
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2answers
138 views

How are Dell Equallogic Snapshots different from a Clone as it relates to disk space consumption?

I have a volume that is 125GB in space. Each snapshot I have is 125GB, exactly. I thought snapshots only grabbed data that changed, using its pointers. If not what the difference between a snapshot ...
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4answers
282 views

SAN with a few SSD drives, or lots of old fashioned HDDs?

My company is trying to figure out what type of SAN to purchase. This is specifically for database servers that are becoming IO constrained (storage is DAS right now, but we're hitting the limit of a ...
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1answer
36 views

MySQL - data inside vm on shared storage? [closed]

I'm planning on moving all my VMs to shared storage, and I have a question about how to deal with a MySQL VM: Currently the size of the VM image is 100GB, where most of the space is taken up by the ...
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0answers
202 views

VSphere web-client shows incorrect datastore capacity [closed]

On the vsphere web client I have a strange problem with one of my datastores as it's displayed capacity is incorrect. Originaly it had 1TB of disk space. After I increased it's capacity on 1.4TB the ...
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2answers
74 views

FC-Multipath: Which path_selector performs best?

So I learned that since Red Hat 6 it is possible to choose between 3 algorithms for loadbalancing between different paths to my FC-SAN, the default dumb round-robin - and new - queue-length and ...
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2answers
410 views

Adding additional disks to HP P2000 SAS Storage

We have a 12 bay HP P2000 SAS Enclosure with 6 drives on RAID 5 installed. The drives are configured as 2 separate DataStores for a VMWare vSphere ESXi setup. Now we want to add: 6 additional ...
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1answer
30 views

Easy way to share a drive with password protected directories?

We have 50 computers that students share. Is there an easy way to have student folders on a single drive on the network where each student has a password? Students need to be able to go to any ...
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4answers
130 views

SSD as cheap alternative to SAN storage? [closed]

We are a $3B company with a team of 6 infrastructure experts. I am a DBA, not part of infra team. Our setup is all VMware ESX 5.1, EMC SAN for storage and ExaGrid for backups. Prod and non-prod ...
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1answer
164 views

What type of cable/connectivity to use between EMC VNX 5200 and Server directly - without going through a SAN switch?

It would be much appreciated if anyone would share insights regarding the below issue: What type of cable/connectivity to use between EMC VNX 5200 and Server directly - without going through a SAN ...
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0answers
304 views

VMware ESXi extremely slow Virtual disk performance compared to RDM

I have a ESXi 5.5 server running with a FC SAN. The FC san is created using an openfiler OS with software RAID and exported with the qlatgt driver. Direct writes to this SAN when no VMFS is used work ...
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1answer
150 views

Can't Repair SR in XenCenter

I've added in a 4th host to my Xen 6.2 cluster and I'm unable to get it to successfully attach to my existing storage repositories. I'm using 3 older IBM hosts and the 4th new one which is CPU masked ...
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1answer
50 views

Possible to cascade HP StorageWorks P4300 G2?

From my understanding HP StorageWorks P4300 G2 is intended to be multiplexed over 1Gb ethernet when used as a SAN, where half of them should be in a remote location. If all 4 are next to each other, ...
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1answer
47 views

Can I recover a corrupt MFT on windows 2003 server if I'm still able to access files through a network share

I have a 2TB SAN formatted with NTFS which was accidentally connected on two hosts simultaneously, and when I browse files from both nodes, I see some test data that I created when I originally setup ...
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68 views

NFS Datastore Disconnects When sVmotion Migration is Attempted

I have a EMC VNXe 3100 and I had tested both iSCSI and NFS connections from it to my hosts, with NFS appearing to be the better of the two. So I set it up and in my testing with 1 VM everything ...
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1answer
510 views

Software for a DIY fibre channel SAN? [closed]

I am trying to create a SAN on a budget. This will be used with a VMware ESX 4.1 cluster for our developers to use as a sandbox/test environment. Since this is not a production environment we do not ...
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1answer
15 views

Connection to MGMNT iterface on Cisco DSC 9124-K9 lost

From some reasons i've lost connection to mgmnt interface in DSC9124-K9 - I cannot ping, cannot see MAC in arp. Fabric interfaces are working well, without problems so I do not want to reset whole ...
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0answers
318 views

Virtualization-(Cluster) with KVM/libvirt on top of a FC SAN

I'd like to set up a 2-node HA-Cluster based on Ubuntu and KVM running about 30 VM's. Both nodes are connected to a HP MSA(5TB) via Fibre Channel. Multipathing's already working and the nodes are able ...
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3answers
85 views

ESX SAN overbooked, what happens if storage limit reached?

In ESX you can easily overbook the available storage with the Virtual Guests. What happens if a overbooked SAN reaches its capacity limit? Its not an actual problem i'm faced with, we just had the ...
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2answers
103 views

Windows 2008 R2 Boot-from-SAN Migration Methods?

We are running Windows Server 2008 R2 Enterprise on a Cisco UCS B200 M3 blade server that is diskless. Currently, we are going through a EMC SAN lifecycle/upgrade. I need to perform this migration ...
2
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1answer
202 views

Operational State Down on QLogic Switch

I have a QLogic SANbox 5800 Fibre Channel Switch with 20 SFP ports. Out of these 20, I can use only 16. The last 4 ports are showing Operational State Down. SANbox (admin) #> show port ...
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3answers
133 views

Shared Disk in modern data center (SAN, virtualization, etc)

I'm a developer...treading here on foreign terrain. Please pardon any naivete. I work on an application that stores data both in a database and the filesystem. Context: Clustering and Network ...
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3answers
996 views

Why should iscsi traffic be isolated?

Why should iscsi SAN traffic be isolated? I'm trying to explain to my network guy why we should isolate the traffic.
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2answers
52 views

parallel filesystem without SAN infrastructure

Is there any parallel filesystem that doesn't need SAN infrastructure ? What I want to do is to create a logical volume and attach it with multiple VMs that will use the disk concurrently.I don't want ...
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0answers
87 views

IBM DS 5300 password recovery

There is a IBM DS 5300 storage in our data center. Unfortunately I have forgot the password and I want to recover/reset it. I did a little search and found that I can connect a physical Console to ...
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1answer
798 views

No LUNs visible on ESXi 5.5 using Brocade 825 connected to EMC VNX 5300

We've just bought a new Dell PowerEdge R620 to replace the oldest of our 3 hosts in our vSphere cluster. The existing hosts are connected to our EMC VNX 5300 SAN using gigabit ethernet which is a ...
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1answer
26 views

Do browsers re-use ssl connections for different domain, but same ip:port and same SAN certificate?

I wonder if browsers can and do re-use the same connection when both domain names resolve to the same IP and both are covered by a single certificate (SAN) when used together on one web site. ...
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3answers
510 views

With 200TB of needed storage, is a SAN a good idea?

My employer has, what I consider to be, a lot of data. We currently have about 10TB of data on our NAS, which is about its capacity, and we would have more data on it if we didn't constantly move ...
2
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1answer
116 views

P4500 Lefthand SAN report degraded on one node when all disks are health “NORMAL”

I am experiencing a strange condition with our HP G1 lefthand SAN cluster. The cluster consists of 4 nodes across two sites, two nodes ( node 1 & 2 )in each site are RAID5 across the pair, and ...
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2answers
404 views

iSCSI SAN RAID 10 Performance — Poor Read, Good Write

I have a EqualLogic PS4000 SAN unit with the latest firmware, setup in RAID 10. I have 3 2TB Volumes on the SAN shared out via iSCSI on 2 eth ports on two different subnets. I have moved a test server ...
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1answer
69 views

HP arrray - XP and EVA - performance monitoring

I have some HP arrays I'd like to monitor for performance. I'm making a reasonable amount of progress with my 3PARs, in using ssh connectivity and show... commands to gather performance information ...
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40 views

SSL cert issued to and SAN attribute

I have added a cert to my application cacerts file. The new cert is issued to one DNS(abc.com) and they have added few other DNS(XYZ.com, TEST.com) to the SAN attribute while creating. I tried ...