FC or iSCSI for SAN-based backups?
We are currently looking at changing from ArcServer 2000 with a tape loader to SAN-based technology. Our connectivity method is still undecided, could you explain the backup process if the Fibre Channel (FC) technology is chosen. Can I get the advantages of the SAN being backed up through Arcserve as opposed to SAN through Windows NT backup?
The topology of the SAN
or Ethernet iSCSI
) is irrelevant to your question. It will work the same with either. ArcServer 2000 and Windows 2003 (I assume you mean 2003 and not NT since Microsoft no longer supports NT) work similarly when connected to the SAN. Each sees its tape library
or disk storage as if that storage is directly connected to the server. The issue here is that the SAN storage device can be shared.
Both ArcServer 2000 and Windows 2003 have the ability to work seamlessly on the SAN. The advantage of the ArcServer is that it can backup data from other servers (other than just Windows) over the TCP/IP LAN, then to the tape or disk on the SAN.
The SAN is not your issue. The backup software choice is your issue. It should be decided based on its ability to meet your organization's disaster recovery and business continuity needs and your budget.
This was first published in July 2005