Our backup solution uses Sun storageEdge L700 with Veritas netbackup. All hosts connect to the L700 with fiber channel. Yesterday we found one LTO3 tape stuck inside the drive and caused the backup partically failed.
Comparing with allocating space from local disks, it is quite tedious for allocating SAN storage to SAN-attached storage. This is a simple step-by-step guild of doing so with EMC Control Center for Solaris environment.
A brief outline of the steps to see new symmetrix disks after they have been mapped on storage side. This is very useful notes for veritas administration.
The storagescope data are zipped xml files and could be copied directly from old server to new servers without any problem. Our old server is 5.2SP3 and the new on eis 5.2SP4. There is no version imcompatibility.
ECC is short for EMC control center. It is the key component from EMC to manage its SAN storage and SAN-attached hosts. We just relocated the ECC server from a four-year old machine to the new HP server, with IP changed.
Well, during each system maintenance, there is always something unexpected happen. This time we are patching the SAN storage. There was some miscommunications.
As the ex-unix-admin left the company, I need to take the responsibility to take care of these unix/linux machines. While the company expected me to do more high-level things than playing with physical machine/environment, I still need to do some basic work while there is nobody to do it.
From: /dev/random
One thing I’ve found in common with all large
sites and that should be pretty obvious, is a PHP compiler cache and
some type of caching system. Some of the more popular ones are APC,
Bware Afterburner, Turck MMCache, and the Zend Accelerator. PHP caching
systems are easy to write and can speed up template calls a ton.
I read this article from Applepeels. I have to agree with the opinion inside this blog, which shaked my intention to join Apple for its Bio/HPC market. BTW, I would also highly recommend others to read all the comments for this article, where you can get most of the insides of working with enterprise customers.
Yet Apple products meet the needs of some enterprises, and those customers continue to purchase the products in spite of Steve
In oracle, varchar2 is widely used to hold variable length string. For varchar data type, there are two minor variants: varchar(byte) and varchar(char). Usually developer does not care about and uses the default from the system. We found that in some situation there may be performance issues for varchar(char) vs varchar(byte).