Well, not exactly a digram, but I will describe the IBM FastT200 RJ25 to DE9 wiring. This inforamtion was given to me by a friend, and I both hope it to be accurate, and hope it would help whoever needs it. RJ25 DE9 1 8 2 7 3 3 4 …
I have a PXE installation server setup, and it usually works quite well. I have tried to install a Tyan based system using this setup, but this time – RHEL4 U3 X86 and not the usual X86_64 system. RH installer starts by asking few questions (language, keyboard, method of installation) and fails to obtain DHCP…
This board is a tricky board. 4GB RAM and above behave in a weird manner in Linux. It appears that PCI 32bit mapping doesn’t work correctly under Linux. To allow Linux to work on this hardware without failure (such as kernel crush during startup), you must follow these three simple guidelines: 1. Spread the memory…
Problem: Two Linux servers (RHEL4) running NFS Server in High-Availability (failover) mode. When failovering the resources, an NFS client can continue to work. When failing back, the NFS client times-out for 5+ minutes. Further problem information: While using RHEL3, that same (exact) configuration worked flawlessly. Solution: set NFS options to UDP instead of TCP. Explanation:…
Defining an array of 10x300GB SATA disks, we need to utilize it for our needs. It will be joined in the near future by another such array, but since it will be an additional array and not added disks to this existing array, we need to think onwards, and utilize LVM, so we can "join"…
Installed RHEL4 on a system with both internal storage (HP SmartAray 5i – cciss) and external disks through Qlogic FCS HBA. During install, the local disks were detected as /dev/cciss/c0d0 while the external disks were detected as /dev/sda and /dev/sdb After installation was done, Grub started with incorrect mapping. For no apparent reason, Grub searched…
