Bert Zefat's Tech Blog

Check Existing 3PAR DNS Settings:

3PAR01 cli% shownet
IP Address         Netmask/PrefixLen   Nodes   Active   Speed   Duplex   AutoNeg     Status
172.28.22.115    255.255.255.0              01         1      100        Full           Yes    Active

Default route : 172.28.22.254
NTP server : 172.27.40.254
DNS server : 172.27.20.3 172.27.20.2

Add DNS Server:

3PAR01 cli% setnet dns -add 10.144.175.37
DNS server successfully updated.

Remove DNS Server

3PAR01 cli% setnet dns -remove 10.135.5.1
DNS server successfully updated.

Tags: 3Par, HPE, Storageworks by Bert Zefat
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Also mentioned in the SSMC Administrator’s Guide:

If you forget the Administrator credentials, clear the password by executing the script ClearAdminCredential.bat located in the SSMC\ssmcbase folder.

C:\Program Files\Hewlett-Packard\SSMC\ssmcbase

Run the script from an administrator command prompt window.

Tags: 3Par, HP, Storageworks by Bert Zefat
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HP Enterprise Virtual Array (EVA) family with VMware vSphere 4.0, 4.1 and 5.0 Best practices
[Download]

Running VMware vSphere 4 on HP LeftHand P4000 SAN Solutions
[Download]

Best Practices for deploying VMware and vSphere 4 with VMware High Availability and
Fault Tolerance on HP P4500 Multi-Site SAN cluster
[Download]

HP P4000 LeftHand Solutions with VMware vSphere Best Practices (incl. vSphere 5)
[Download]

3PAR Utility Storage with VMware vSphere
[Download]

HP P2000 Software  Plug-in for VMware VAAI
[Download]

HP 3PAR Storage and VMware vSphere 5 best practices
[Download]

Tags: 3Par, ESX, EVA, P2000, P4000, Storageworks, VMware, vSphere by Bert Zefat
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Disk alignment is very important in every Operating system environment. But when you are using a SAN and also using VMware you should take disk alignement in account.

Above you see that the Guest OS (for example Windows) is not aligned with the VMFS and the VMFS is not aligned with the Array Blocks. Meaning that 1 I/O can result into 3 I/O’s on the storage device.

Now the VMFS has been aligned, but the Guest OS is still not. Now an I/O can result into 2 I/O’s on the storage device. Beter, but performance can still be improved.

Now all File Systems are aligned. On I/O results into 1 I/O, because all beginning of the blocks are at the same position.

Only Windows Vista, Windows 2008 and Windows XP has a trick to avoid this:

Tags: 3Par, ESX, EVA, P2000 by Bert Zefat
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