Linux, programming and more
GFS2 – the Global File System
Very responsive on large files.
It allows a cluster of computers to simultaneously use a block device that is shared between them (with FC, iSCSI, NBD, etc…). GFS reads and writes to the block device like a local filesystem, but also uses a lock module to allow the computers coordinate their I/O so filesystem consistency is maintained.
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What are the differences between ext3 and ext4?
Ext3
Journaling: Yes
Creation timestamps: No
Max file size: 16 GB – 2 TB
Max Volume size: 256 TB
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Good news from apache – Many new features and enhancements has been integrated in the development version of the next Apache.
By the way on my birhday on 7th of march was apache 2.3.11-beta released, With nice features:)
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A RAID 6 is another form of parity protection for disks. Called dual parity too.
Requirements: 4 Disks
Capacity: (Size of Smallest Drive) * (Number of Drives – 2)
Read: Very good read performance
Write: Poor write performance due to dual parity overhead and complexity
For this RAID level you should use a hardware controller.
A RAID 5 uses block-level striping with parity data distributed across all member disks.
Requirements: At least 3 drives
Fault Tolerance: (N – 1) Can tolerate loss of one drive
Capacity: (Size of Smallest Drive) * (Number of Drives – 1)