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3ware® User Guide > Configuring Your Controller > Enabling and Setting Up Staggered Spin-up

Enabling and Setting Up Staggered Spin-up
You can set the number of SAS (9690SA only) and SATA drives that will spin up at the same time and the delay time between drive group spinups. This does not apply to SAS or SATA drives that are attached to an expander.
Three policy settings let you set the number of drives that will spin up at the same time and set the delay between drive groups that spin up at one time.
Not all SATA drives support staggered spinup. If you enable staggered spinup and have drives that do not support it, the setting will be ignored. You can change these settings in 3BM or using the CLI.
 
It is possible to enable or disable automatic detection of drives on the controller’s ports for staggered spinup during hot swapping of drives. This feature is only available in the CLI using the autodetect=on|off command. For more information, see /cx set autodetect=on|off disk=<p:-p>|all.
 
Note: Some hard drives require that the power management jumper (PM2) be set to enable staggered spinup, in order for the SATA OOB option to be used. For more information, see the knowledgebase article 14889, at
http://www.3ware.com/KB/article.aspx?id=14889
To enable or disable spinup and set the delay between spinups
1
At the main 3BM screen, Tab to Policy and press Enter.
2
On the Policy Control screen, Tab through these fields, making the choices you want to use:
*
Staggered Spinup: Choose enabled or disabled.
*
Number of Drives Per Spinup: Select the number of drives, depending on the number of ports on the controller.
*
Delay between spinup: Select the number of seconds—from 1 to 6.
3
Tab to the OK button and press Enter.
You will notice a short delay as 3BM makes the policy changes.

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