Dell PowerVault TL2000 Bedienungsanleitung PDF herunterladen (Seite 14)

14 Performance Considerations for Tape Drives and Libraries

www.dell.com | support.dell.com

Figure 1-6. Single vs. Split Data Flow to Tape Library

At the same time, if a bottleneck exists in the data being read from an external FC disk array, the

use of I/O management software such as EMC

PowerPath

with an additional fabric connection

will automatically load-balance the data across multiple paths and increase availability through

path failover. See Figure 1-7. The left side of the figure represents a SAN disk array in which all of

the data is forced through a single link, creating a bottleneck that slows data flow to the tape

hardware. The right side shows how load balancing doubles the I/O bandwidth coming out of the

array by allowing the data to transmit across two links.

HOST

Fibre Channel

Switch

Fibre Channel

Disk Array

Fibre Channel

Switch

Fibre Channel

Switch

HOST

Fibre Channel

Disk Array

Tape Library Tape Library

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 175 176

Keine Kommentare

Dell PowerVault TL2000 Bedienungsanleitung Seite 14