Green around the gills …

July 25, 2011

You may be surprised when looking in Adaptec Storage Manager on some machines to find the array and drives with a green background.

Did our programmers just get bored? (not likely)

The green behind an array indicates that the array is under power management. This means that after the administrator has set the necessary timers for each array, the card will watch the activity to and from the drives. When there is no activity for a set period of time the card will take action to either slow the drives or spin them down.

The drives show a green background when they are spun down.

If you are looking for this effect and can’t see the green background, look in the view menu and make sure the checkbox “power management” is ticked.

This is a great way of saving a few dollars – in fact quite a few over the life of a server. I set my server for 30 minutes inactivity to slow the drives. After 1 hour of no activity the card will spin the drives down. The end result of all this trickery is that my server spends a large amount of time with the drives spun down, saving Adaptec a great deal of electricity (take note Boss).

So are you saving yourself or your customers money? It’s a feature worth looking at (Series 2, 5 and 6).



2 thoughts on “Green around the gills …

  1. Santosh,
    Good question … don’t know but think the reason here is test time – we simply haven’t tested that function on all drives because it will take way too long. Sometimes we just have to believe a vendor (as dangerous as that may be).
    Personally I see little need for “slowing” a drive. I set my power settings so that either I’m using the system or I’m not – I don’t have my system “maybe” ready for use.

  2. Neil–
    Why is that for both SATA as well as SAS drives in which the manual for the drives specifically state that they support reduced RPM standyby and/or idle modes that Adaptec Storage Manager as well as the compatibility list for ALL drives indicate that none support reduced RPM?

    I was initially under the believe this would only be the case for SATA drives because STP (SATA Tunneling Protocol) interferes with it (much the same way that STP interferes with drive manufacturers’ diagnostic tools such as Seagate SeaTools or Western Digital Data LifeGaurd diagnostics when running drive self tests on SATA drives but not on SAS drives), but the Adaptec FAQ ( indicates that SATA drives are also supported for reduced RPM operation.

    What is the reason for this?

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