Data Domain DD400 Series, User Manual

Page: 135 / 300

Chapter 10: Disk Management 97
Display Disk Performance Details
Display Disk Performance Details
The display of disk performance shows statistics for each disk. Each column displays statistics
averaged over time since the last
disk reset performance
command. See “Reset Disk
Performance Statistics” on page 98 for reset details.
Command output from a restorer using external storage lists each LUN accessed by the restorer as
a disk.
Disk is the disk ID number, from 1 (one) to 15.
Read sects/s is the average number of sectors per second read from each disk.
Write sect/s is the average number of sectors per second written to each disk.
Cumul. MBytes/s is the average number of megabytes per second written to each disk.
Busy is the average percent of time that each disk has at least one command queued.
Display
Use the
disk show performance
operation or click Disks in the left panel of the DDR
Manager to see disk performance statistics.
disk show performance
The display is similar to the following:
# disk show performance
Disk Read Write Cumul. Busy
sects/s sects/s MBytes/s
------ -------- -------- -------- ------
disk1 378 426 0.392 11 %
disk2 0 0 0.000 0 %
disk3 346 432 0.379 10 %
disk4 0 0 0.000 0 %
disk5 410 439 0.414 11 %
disk6 397 427 0.402 11 %
disk7 360 439 0.389 11 %
disk8 (spare) (spare) (spare) (spare)
disk9 358 430 0.384 10 %
disk10 390 429 0.399 11 %
disk11 412 430 0.411 11 %
disk12 379 429 0.394 11 %
disk13 392 426 0.399 11 %
disk14 373 427 0.390 12 %
disk15 424 432 0.417 12 %
------ -------- -------- -------- ------
Cumulative 5.583 MB/s, 11 % busy