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тАО12-07-2004 04:17 AM
тАО12-07-2004 04:17 AM
Solved! Go to Solution.
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тАО12-07-2004 04:24 AM
тАО12-07-2004 04:24 AM
Re: HP MSA 1500 SAN and Windows Server 2003
You can not reliably use shared storage amongstWindows Servers with having some sort of clustering/file locking utility in place.
If your servers ARE clustered with Microsoft Clustering AND your seeing your drives on BOTH servers, then you definitely have a problem as MSCS does not allow shared access to the same LUN at the same time.
Can you give us anymore information?
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО12-07-2004 04:25 AM
тАО12-07-2004 04:25 AM
Solution"You can not reliably use shared storage amongst Windows Servers withOUT having some sort of clustering/file locking utility in place."
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО12-07-2004 05:02 AM
тАО12-07-2004 05:02 AM
Re: HP MSA 1500 SAN and Windows Server 2003
So with out a file locking utility what I am seeing is normal?
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тАО12-07-2004 05:10 AM
тАО12-07-2004 05:10 AM
Re: HP MSA 1500 SAN and Windows Server 2003
The 4 SQL servers need access to the SAM logical unit?
There are other third party products that can be used. One that comes to mind is PolyServ. I am not sure if it works with SQL at all, but it allows multiple Windows servers to access the same logical drive simultaneously.
Any reason to not use MSCS? (besides the cost of Server 2003 Enterprise).
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО12-07-2004 05:11 AM
тАО12-07-2004 05:11 AM
Re: HP MSA 1500 SAN and Windows Server 2003
Remember that 'SAN' in your environment simply means running serial SCSI protocol over a fibre channel infrastructure. At this level, the systems are simply dealing with blocks of data - they have no idea what a file system or a database is.
By default, the MSA1000 /1500 presents all LUNs / logical disks to all hosts. If you don't cluster, you must make sure that only a single host has access to its own LUNs. You do that by enabling the 'SSP' (selective storage presentation, also known as LUN masking) and tell the storage array which fibre channel adapter has access to which LUN. At this time I would rename the connections to a meaningful value and make sure that the operating system profile is set correctly.
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тАО12-07-2004 05:27 AM
тАО12-07-2004 05:27 AM
Re: HP MSA 1500 SAN and Windows Server 2003
Can I setup SSP so only one server has control over the SAN? Will this fix my problem? From there all other servers can map to it and I can install my databases to the SAN from multiple servers?
I have one last question. I configured two sets of logical drives on the SAN. Under server 2k3 disk mangement I see 4 disks. Two of which I partitioned and assigned drive letters and volume names. Why is it showing 4 disks under disk management?
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тАО12-07-2004 06:08 AM
тАО12-07-2004 06:08 AM
Re: HP MSA 1500 SAN and Windows Server 2003
SSP allows you to selectively present your logical disks to your servers. If you do not need your servers to access the same Logical Disk, you can Create 4 Logical Disks and selectively present one to each server.
"I have one last question. I configured two sets of logical drives on the SAN. Under server 2k3 disk mangement I see 4 disks. Two of which I partitioned and assigned drive letters and volume names. Why is it showing 4 disks under disk management?"
Do you have a MSA1000 with the Redundant 2nd Controller? If so, you will need a piece of software called Secire Path to handle multiple I/O paths to your storage. Alternatively, there is a "free" Multipath I/O driver available from HP.
The reason you would see 2 disks(in the OS) for each logical disk is because there are 2 physical paths to get to that disk from your server. Secure Path manages those 2 paths and presents 1 single drive to the OS.
Can you show a screen capture of the ACU's main page (after you click the MSA1000 controller)?
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
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тАО12-07-2004 11:54 PM
тАО12-07-2004 11:54 PM
Re: HP MSA 1500 SAN and Windows Server 2003
I cannot attach the screen shot. The file is 3.5 MB.
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тАО12-08-2004 12:04 AM
тАО12-08-2004 12:04 AM
Re: HP MSA 1500 SAN and Windows Server 2003
You will NOT need the ACU on ALL servers, only one server attached to the MSA1000. ACU is just a configuration utility. Having it on all the servers would make life a tad simplier, but it is not necessary.
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)