Do you have dedicated iSCSI ports from your server to your NetApp? iSCSI requires dedicated network and not a shared network or even VLAN. Backup cause large I/O that fill your network quickly. Like ans SAN today.
Backup are extremely demanding on hardware (CPU, Mem, I/O ports, disk etc). Not rare to see performance issues during backup with several thousands small files. Each small file cause seeks to your disk and file system. As the number of files and size you will be impact. That means, thousand of small files cause thousand of small I/O but not a lot of throughput. Bigger your file are more likely the block will be consecutive on the file system. Small file can be spread in the entire file system causing seeks, latency and bottleneck. Legato client and server contains tuning parameters to avoid such small file problems. Check your Legato buffer parameters. These buffer will use your server memory as disk cache. Here is a good source of network tuning parameters for your T2000 http://www.solarisinternals.com/wiki/index.php/Networks#Tunable_for_general_workloads_on_T1000.2FT2000 The soft_ring is one of the best one. Here is another interesting place to look http://www.solarisinternals.com/wiki/index.php/Solaris_Internals_and_Performance_FAQ Jean Dion Storage Architect Data Management Ambassador -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
