ello , We have an Performance Problem when take an Backup , Merge or create an virtual Full Backup to Tape .
Here is the environment :
-Backup Server ( Proxy ) : W2008R2 Server ( HP DL 380 G7 ) 192 GB RAM , 2 CPUs , 2x300 HDDs RAID 1 , H222 SAS Controller to MSL4048 HP Tape Libary -10 Gbit Network to the Productiv Storage ( Netapp FAS8020 Metrocluster ) , to the Backup Server and to the Backup Storage ( Netapp FAS 2554 ) -Netapp Backup Storage ( FAS 2554 ) , 2 Aggregates, each with 22x 4TB SATA ( 7200 ) HDDs , on this Aggregats there are on every Aggregat 5 ISCSI Volumes . This Volumes are Drives ( Repositorys ) on the Backup Server. Netapp Productiv Storage ( FAS 8020 ) , The Veeam Backup Server is connected via 10Gbit Network to the NFS Volumes and uses the Storage Snapshot Copy Funktion to Backup the VMs to the Backup Storage Tape Libary : HP MSL 4048 with an HP StorageWorks LTO5 Tape Drive , Connected via SAS to the Backup Server
The newest Drivers and Firmwares for Tape Drive , Tape Libary and the Controllers on the Server are installed .
And now our Problem :
A normal Full Backup Job only backup ( Writes ) with 144 MB/s to the backup Storage FAS 2554 . An Merge Job ( Read and Write ) needs needs very long time and the Creation of an virtual Full to Tape needs for 10TB 41 Hours with 70 MB/s on an LTO5 Tape Drive via SAS.
What can be the Problem for poor Performance on Writing or Reading from an W2008R2 Server to the FAS2554 ?
Which Speed should be able with an 10Gbit ISCSI Connetion from an Windows Sever to the FAS 2554 ?
Here an Speedtest from the Server to the Storage with Diskspd Tool :