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Monthly Archives: October 2011
IPv6 Address Space
The IPv6 Address Space The most obvious difference between the two protocols is the length of their source and destination addresses. The whole point of making the switch to IPv6 is to compensate for a global shortage of IP addresses. It … Continue reading
Posted in Computers and Internet
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Disable SMB 1.0
The Server Message Protocol (SMB) is the file sharing protocol used by default on Windows-based computers. Although file sharing and network protocols are primarily supported by our Networking team, it is important to understand how SMB works given its importance … Continue reading
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DFS slow in Win2008
DFS namespace link name was the same as the share name so when DFS fowarded the referral request it ended up back at the DFS namespace again instead of the computers share. This issue was only found with 2008 as … Continue reading
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NFS Good Practice
Here a list a settings to change to properly accomodate NFS on an Iomega StorCenter Pro NAS: NFS.MaxVolumes = 32 NFS.HeartbeatFrequency = 12 NFS.HeartbeatTimeout = 5 NFS.HeartbeatMaxFailures = 10 Net.TcpipHeapSize = 30 The three heartbeat options control heartbeat counts and … Continue reading
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HP Drive Error Code
The following events indicates a potential failure. /* 0x01 */ “TOO SMALL IN LOAD CONFIG”, /* 0x02 */ “ERROR ERASING RIS”, /* 0x03 */ “ERROR SAVING RIS”, /* 0x04 */ “FAIL DRIVE COMMAND”, /* 0x05 */ “MARK BAD FAILED”, /* 0x06 */ “MARK BAD FAILED IN FINISH REMAP”, /* 0x07 */ “TIMEOUT”, /* 0x08 */ “AUTOSENSE FAILED”, /* 0x09 */ “MEDIUM ERROR 1”, /* 0x0A */ “MEDIUM ERROR 2”, /* 0x0B */ “NOT READY BAD SENSE”, /* 0x0C */ “NOT READY”, /* 0x0D */ “HARDWARE ERROR”, /* 0x0E */ “ABORTED COMMAND”, /* 0x0F */ “WRITE PROTECTED”, /* 0x10 */ “SPINUP FAILURE IN RECOVERY”, /* 0x11 */ “REBUILD WRITE ERROR”, /* 0x12 */ “TOO SMALL IN HOT PLUG”, /* 0x13 */ “BUS RESET RECOVERY ABORTED”, /* 0x14 */ “REMOVED IN HOT PLUG”, /* 0x15 */ “INIT REQUEST SENSE FAILED”, /* 0x16 */ “INIT START UNIT FAILED”, /* 0x17 */ “INQUIRY FAILED”, /* 0x18 */ “NON DISK DEVICE”, /* 0x19 */ “READ CAPACITY FAILED”, /* 0x1A */ “INVALID BLOCK SIZE”, /* 0x1B */ “HOT PLUG REQUEST SENSE FAILED”, /* 0x1C */ “HOT PLUG START UNIT FAILED”, /* 0x1D */ “WRITE ERROR AFTER REMAP”, /* 0x1E */ “INIT RESET RECOVERY ABORTED”, /* 0x1F */ “DEFERRED WRITE ERROR”, /* 0x20 */ “MISSING IN RIS SAVE”, /* 0x21 */ “WRONG REPLACE”, … Continue reading
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PDFtk split and merge
5.2.2 Manipulate Pages with pdftk, the PDF Toolkit pdftk is a command-line tool for doing everyday things with PDF documents. It can combine PDF documents into a single document or split individual pages out into a new PDF document. Read … Continue reading
Posted in tips-tricks-hacks
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Filename parsing in batch
Filename parsing in batch file and more idioms In the following examples, we iterate a list of files and use the idiom ~[idiom] to extract certain part of a given filename. Extract the filename without the extension : ~n for … Continue reading
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Using batch files
With batch files, which are also called batch programs or scripts, you can simplify routine or repetitive tasks. A batch file is an unformatted text file that contains one or more commands and has a .bat or .cmd file name … Continue reading
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IOstat Disk Performance
For a Windows box create a perfmon counter for these parameters: \PhysicalDisk(_Total)\Disk Reads/sec \PhysicalDisk(_Total)\Disk Writes/sec \PhysicalDisk(_Total)\Disk Read Bytes/sec \PhysicalDisk(_Total)\Disk Write Bytes/sec \PhysicalDisk(_Total)\Avg. Disk Bytes/Read \PhysicalDisk(_Total)\Avg. Disk Bytes/Write On a Linux server use this command to dump iostats to a text … Continue reading
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Vmware ESX host access NFS
Enter the command prompt on the server or SSH session for the server. esxcfg-nas -a -o 192.168.1.10 -s /VolumeName DataStoreName Where: 192.168.1.10 is your NAS IP address VolumeName is the NFS volume name on the NAS DataStoreName is the ESXi … Continue reading
Posted in VMWare
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