1. Best Practices for Backup in SAN/NAS Environments Jeff Wells

2. Why networked storage? Sharing and Centralization/Consolidation – Operating efficiency Fewer resources used more often All in a single location – Capital efficiency Amortize the cost of resource across multiple projects or departments – Data integrity – Management controls

3. Networking Storage Reduces TCO $0.44 StorageNetwork DAS $0.33 SAN $ cost per megabyte of user data Source: McKinsey & Company, Merrill Lynch June 19, 2001 Based on a 3-Year total cost of ownership $0.31 NAS Excluding People Cost

4. Networking Storage Reduces TCO $0.84 StorageNetwork DAS $0.38 SAN $ cost per megabyte of user data Source: McKinsey & Company, Merrill Lynch June 19, 2001 Based on a 3-Year total cost of ownership $0.35 NAS Including People Cost

5. Fewer people for networked storage Study by Working Group For Chief Information Officers reports that SAN customers managed 6 to 12 times as much capacity compared with DAS. Resulting in an 83 to 92% reduction in people cost. Gartner Group analysis discovered a 66% reduction in people cost of NAS compared to DAS. Enterprise Storage Group found that the average SAN customer had a 3.75 times increase in efficiency over DAS or a 73% reduction in people cost.

6. NAS Servers Clients Filers LAN

7. Method 1 – Direct Attach Servers Clients Filers NDMP Backup Server Tape Library

8. Method 2 – FC Attach Filers NDMP Backup Server Tape Library FC Switch

9. SNIA TB/hr Master Server Media Server 10/100 Ethernet NDMP Backup Data

10. SNIA TB/hr Configuration and Results 4 NetApp F880 Filers w/ 2 FC ports per Filer Brocade Silkworm 2800 Veritas NetBackup 4.5 Spectra 64000 with 8 AIT-3 tape drives Backed and restored 1TB of data in just over 53 minutes

11. Method 3 – NDMP Server Servers Clients Filers NDMP Backup Server Tape Library w/NDMP Server

12. Method 4 – Disk-to-Disk Clients Filers NDMP Backup Server Tape Library

13. NAS Tips: Jumbo Frames – less overhead equals faster performance. Switch and NICs must support Native GigE solution VLAN for data movement TCP Offload Engines (TOEs) Scalability – don’t get boxed in with backup solution Disaster Recovery - How are going to backup the backup server?

14. SAN Servers Clients LAN FC Switch RAID Tape Library SAN

15. Server-less Backup LAN FC Switch RAID Tape Library SAN Clients Backup Server X-Copy

16. Real World Example Large Nationwide Telecom Storage Consolidation Resource Sharing Scalability

17. Brocade 16 Port Switch Primary Storage BCV Spectra 64000 Tape Libraries SAN Backup LAN Backup Server

18. SAN Tips: Third-party or Serverless Backup support – verify restore 2Gb FC Bridge vs. Native FC (cost, port count) FC over IP (FCIP or iFCP) to tie SAN ‘Islands’ together

19. Which one? SAN or NAS NAS Advantages: –File based, no block x-fer (iSCSI) –Utilizes existing infrastructure (training) SAN Advantages: –Block based for maximum performance/application support

20. Things to keep in mind Backing up the Backup Server –This server has the DB containing media and what is on each media and is critical for Disaster Recovery. Library Partitioning – –It maybe advantageous to create separate physical partitions to accommodate different data. How does this factor into TCO? Support for Multiple Interfaces – –Some library vendors support SCSI, GigE and FC connectivity simultaneously. This can make migrating from one environment to another very easy and free from stress.

21. Best Practices for Backup in a SAN/NAS Environment The collaboration of SAN and NAS architectures now allows users to access data through NAS appliances and efficiently back them up to the tape storage device utilizing a SAN. The advent of this SAN and NAS architecture enables the ability to remove data traffic and backup operations from critical servers, which are now new options for today's end users. Discussion will focus on best practices, including throughput, connectivity, capacity, network considerations, and overall optimal implementations using SCSI, Fibre, IP and GigE based automated tape libraries in a SAN/NAS environment