Advanced Backup to Disk Performance White Paper

HP StorageWorks Modular Smart Array 1500 (MSA1500)

The MSA1500 disk array keeps the file library (backup-to-disk data). It is composed of 12 x 250 GB

7.2 rpm disks in an enclosure and driven by a MSA1500 controller with 4 Ultra3 SCSI (160 MB/s

per channel) interfaces. The array is connected to the server by a single 2 Gigabit Fibre Channel link.

Different configurations are created with:

• 1-4 logical disk arrays

• 1-8 LUNs

• RAID levels 0, 1+0, 1, 5

RAID 0 and 1 Logical Array

The disk enclosure is configured as 1 logical disk array with 12 disks.

Figure 18. MSA1500 Logical Array Configuration – RAID 0 and 1 Logical Array

4 LUNs protected by RAID 0 are created as shown in the next figure.

Figure 19. MSA1500 Logical Drive Configuration – RAID 0 and 1 Logical Array