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 »
CDROM – DVDROM (Virtual Optical Device): Any optical device equipped on the Virtual I/O Server partition (either CD-ROM, DVD-ROM, or DVD-RAM) can be virtualized and assigned at any logical partition, one at a time, using the same virtual SCSI adapter provided to virtual disks. Virtual optical devices can be used to install the operating system
IBM VIOS CDROM – DVDROM (Virtual Optical Device) Read More »
DS_300B_234:admin> date Tue Dec 31 06:43:16 UTC 2013 DS_300B_234:admin> tstimezone Time Zone Hour Offset: 0 Time Zone Minute Offset: 0 DS_300B_234:admin> date Tue Dec 31 06:45:59 UTC 2013 DS_300B_234:admin> tstimezone –interactive Please identify a location so that time zone rules can be set correctly. Please select a continent or ocean. 1) Africa 2) Americas 3)
Brocade SAN Switch NTP Setting the date and time Read More »
Create an ISO image of AIXLPAR2 from an existing mksysb file. I had already created a mksysb file of AIXLPAR2 in /usr/sap/put/AIXLPAR2-mksysb. root@AIXLPAR2 /usr/sap/put # mkcd -L -S -I /usr/sap/put/image -m /usr/sap/put/AIXLPAR2-mksysb Initializing mkcd log: /var/adm/ras/mkcd.log… Verifying command parameters… Creating temporary file system: /mkcd/cd_fs… Populating the CD or DVD file system… Building chrp boot image…
Aix using mkcd and creating a bootable ISO image from mksysb images Read More »
Configuring your SEA with Etherchannel. First check the shared virtual ethernet adapters you have – $ lsmap -all -net SVEA Physloc —— ——————————————– ent8 U8231.E2D.06C83BT-V1-C11-T1 SEA ent11 Backing device ent10 Status Available Physloc SVEA Physloc —— ——————————————– ent9 U8231.E2D.06C83BT-V1-C12-T1 SEA NO SHARED ETHERNET ADAPTER FOUND $ Then we need to check what adapters we can
How to create Etherchannel with SEA VIO in IBM Read More »
Overview One of the problems that one can often run into is that you need to change some characterstic on the ethernet adapter that you are using for the SEA. One example is that you need to change the speed from say autonegotiate to 100 full duplex. If you simply go to the root user
How to change adapter properties of the SEA VIO IBM Read More »
There are several ways to get this info. # netstat -v | grep Speed Media Speed Selected: Auto negotiation Media Speed Running: 1000 Mbps Full Duplex Media Speed Selected: Auto negotiation Media Speed Running: 1000 Mbps Full Duplex # entstat -d en0 #for en in `netstat -i | grep en | awk ‘{print $1}’ |
How to get the Network Card speed on AIX Read More »