On a deployment site, fourteen 300 GB FC disks are connected to a Linux server by using the FC host port. The 14 disks form a RAID 10 group and are divided into two 1 TB LUNs. The two LUNs are mapped to the Linux server. The Linux server is logged in to and the read/write performance of the disks mapped by the S5300 is tested. It takes five minutes to create a 1 GB file. The write performance is poor.
When 14 disks form one mirror group of a RAID 10 group, the capacity of the RAID group is equal to one disk; therefore, the write performance is poor. Usually, the number of disks in a mirror group is two. The capacity of the RAID group is 50% of the raw capacity and its capacity is between RAID 0 and RAID 5.
During the deployment, install and configure storage devices strictly according to the deployment guide.