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The ME5024 array is fully populated with 24× 960 GB SAS SSDs. An optimal way to configure the 24 drives for metadata is to configure twelve MDTs. Each MDT is a RAID 1 disk group of two drives each. Figure 4 shows how the MDTs are configured.
The management service runs on the metadata servers, and it is initially set up on the metaA server. The metadata targets are formatted with the ext4 file system because it outperforms other file systems with small file I/O and handles storing metadata as extended attributes inside the inode more efficiently.