VERITAS Storage Foundation 4.1 Release Notes

Software Issues
44 VERITAS Storage Foundation Release Notes
block size file system). Therefore, large file systems must be mounted only on systems that have
sufficient memory. The memory requirements for mounting large file systems are shown in the
tables below.
While performing a full fsck, the system keeps certain data structures in the core for validating
the space usage and inode usage. The space needed depends on the number of inodes and the
number of blocks in the file system. The fsck command needs approximately 16 MB per 1 TB for
an 8K block size file system (128 MB per 1 TB for a 1K block size file system) and 32 MB per
million inodes. Sufficient memory and swap space should be configured on the system before
running a full fsck on a large file-enabled system.
A replay fsck does not need a significant amount of memory and does not have these issues.
Some Disk Quota Operations Do Not Function on NFS
When VxFS file systems are exported via NFS, quotas on the file system apply to users when
accessing the file system from NFS clients. However, the HP-UX quota commands on the NFS
client cannot be used to edit quotas. The VxFS quota commands can be used on the server to edit
quotas.
Memory Usage for a File System With a 1K Block Size
File System Size 128 GB 1 TB 8 TB 64 TB 256 TB
Memory Usage 1 MB 4 MB 32 MB N/A N/A
Memory Usage for a File System With a 2K Block Size
File System Size 128 GB 1 TB 8 TB 64 TB 256 TB
Memory Usage 512K 2 MB 16 MB 128 MB N/A
Memory Usage for a File System With a 4K Block Size
File System Size 128 GB 1 TB 8 TB 64 TB 256 TB
Memory Usage 256K 1 MB 8 MB 64 MB N/A
Memory Usage for a File System With an 8K Block Size
File System Size 128 GB 1 TB 8 TB 64 TB 256 TB
Memory Usage 128K 512K 4 MB 32 MB 128 MB