Archive for the ‘hardware setup’ Category
Tuesday, January 22nd, 2008
I/O stack components Overview
Typically the stack consists of the following
• Database
• Character or block device driver
• Multipathing driver
• SCSI driver
• HBA
• System Bus
• Switch/iSCSI routers
• Storage Array
• Disks
Example of vendors:
ASM-Database IBM Oracle
Character or block device driver
Multipathing driver – PowerPath, Windows MPIO
SCSI driver
HBA – Host Bus Adapter, Qlogic (IBM), Emulex
System Bus ...
Posted in hardware setup, oracle, ibm db2, Back-of-the-Envelope, Database, Storage, Design, Fibre Channel, Capacity planning | No Comments »
Thursday, January 10th, 2008
When you have a performance concern, check the operating system settings to determine if these settings are appropriate for your application. Because the Linux operating system is not a WebSphere Application Server product, be aware that it can change and results can vary.
Procedure
Configure the following settings and variables according to ...
Posted in app server tuning, hardware setup, linux, file systems, websphere 6.0.x | No Comments »
Sunday, June 3rd, 2007
Steps taken to to increase the storage for an existing logical volume. The following commands
are for AIX. The steps, however, are universal. You only need to substitute the commands for other platforms.
1) How big is the vg?
<Oracle 10.2.0.2 - ora10g>/home/oracle $ lsvg oradata_vg
VOLUME GROUP: ...
Posted in system admin, hardware setup | No Comments »