When configuring RAID 1 or 10 with mdadm, is it safe to disable OS write barriers (with barrier=0 or nobarrier)? As there is no writeback cache memory on software RAID.
My server has very low disk performance if write barrier is enabled. As it has a disk controller with battery for the cache it is safe to add the "nobarrier" option to /etc/fstab. This makes a huge ...
We've been running a server on a VM at a hosting company, and have just signed up for a dedicated host (AMD Opteron 3250, 4 cores, 8GB RAM, 2 x 1TB in software RAID, ext3). While running performance ...