Here is a script that I use to re-scan the FiberChannel bus for new or removed volumes on Solaris 10. WARNING!: This script works for me, but use it at your own risk! Make sure you look through the script and make sure it doesn’t do anything that would be unusual on your system. I […]
Solaris script to scan FiberChannel bus for new LUN Read More »
HP-UX 1. Rescan the devices: ioscan -fnC <disk|tape> 2. Generate device files: insf -e 3. Verify the new devices: ioscan -funC <disk|tape> AIX 1. Rescan the devices ): cfgmgr -vl fcsx Where x is FC adapter number 2. Verify the new devices: lsdev -Cc <disk|tape> Linux The rescan in Linux is HBA-specific. For QLogic: echo
How to Rescan new LUN’s added in Linux, HP-UX, Aix, Solaris ? Read More »
What is X Window ? The X Window System, commonly referred to as X, is a network-based graphical window system. The X Window System uses a client-server architecture. It enables multiple programs to share and access a common set of hardware. This hardware includes both input and display devices such as mouse, keyboards, video adapters,
Configuring X-Server Display For Oracle Solaris 11 Read More »
If you want can to increase this value, but carefull, amount ram memory you have?. For a machine with 1280MB set it with 81920. (256 for every 4M of RAM +-) Edit /etc/sysctl.conf and add this fs.file-max = 81920 loads the new parameters of kernel # sysctl -p and try it again
Linux kernel: VFS: file-max limit 65535 reached Read More »
Aix mount nfs and Linux mount nfs….. Linux : SSH to the Linux box Add an entry in the /etc/hosts to add the AIX server IP and hostname, if it is not already there Specify the file system to be exported in the /etc/exports file /data X.X.X.X Start the nfs service, if it has not already
How to Mount NFS From Linux To AIX Read More »
Loading the boot image of AIX After POST, the firmware (System Read Only Storage) detects the 1st bootable device stored in the bootlist. (here it is hdisk0) then the bootstrap code (software ROS) i.e. 1st 512 bytes of the hard disk loads to RAM. Bootstrap code locates the Boot Logical Volume (BLV = hd5) from
Aix Booting Process Read More »
I will provide a calculation example for calculating the required spindles in combination with a known skew. No capacity will be addressed in this post, where I will base it purely on IOPS / throughput and apply it to a mixed FAST VP pool. We all know about the write penalty which is the following:
IOPS calculation for your FAST Pool Read More »
What is IOPS? IOPS (Input Output Per Second) is a common performance metrics used for comparing/measuring the performance of Storage systems like HDD, SSD, SAN. Quick Calculation sheet RPM IOPS 15 K 175 IOPS 10 K 125 IOPS 7.2 K 75 IOPS 5.4 K 50 IOPS How to Calculate IOPS requirement? We will consider the
Today while migrating SAN i face this issue, hope it will help others too… The system panic during boot logging the error: {0} ok boot 56024-disk Boot device: /virtual-devices@100/channel-devices@200/disk@1 File and args: SunOS Release 5.10 Version Generic_147440-01 64-bit Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved. NOTICE: zfs_parse_bootfs: error 19 Cannot mount
System Panic During Boot Logging the Error “NOTICE: zfs_parse_bootfs: error 19” Read More »