Category Archives: Hard Drives

Barracuda Green ST2000DL003

Reformatted a bit to fit on page.

I have 6 of these (2TB) in each NAS Raid5 setup plus motherboard, AMD cpus, RAM etc.
This page is for researching a replacement PSU.

2.8.1 Power consumption
Power requirements for the drives are listed in Table 2 on page 15. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient temperature.

• Spinup power Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.

• Read/write power and current
Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-ms delay, then a 16-sector read followed by a 32-ms delay.

• Operating power and current
Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10
reads) and 20 percent drive idle mode.

• Idle mode power
Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.

• Standby mode
During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/write electronics are in power-down mode.

Table 2 DC power requirements
Avg (watts 25°C) Avg 5V typ amps Avg 12V typ amps
Spinup — — 2.1
Idle* † 4.5 0.151 0.303
Operating 5.8 0.440 0.300
Standby 0.50 0.085 0.01
Sleep 0.50 0.085 0.01

Avg (watts 25°C) Avg 5V typ amps Avg 12V typ amps
Spinup 2.1
Idle* † 4.5 0.151 0.303
Operating 5.8 0.440 0.300
Standby 0.50 0.085 0.01
Sleep 0.50 0.085 0.01

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.
†5W IDLE, Standby and Sleep,with DIPLM Enabled

Seagate ST32000542AS 2TB Setup

A lot of ST32000542AS drives come with the CC34 firmware. Apparently it has various known problems, one of which is an annoying click (click of death). The first thing you’ll want to do is upgrade the firmware to CC35. A Link to the instructions is in the references section below.

Once that is done, the next step, if it exists, is removing HPA from the drive.
You’ll know it has HPA enabled by running hparm. HPA results in less capacity and so it’s not a good thing in an array.

We’ll be using Debian 6.0 (squeeze).

hparm -N /dev/sdb

You should see a difference in the numbers here. I chose to take the highest number. This completely disables HPA.

hdparm -N p3907029168 /dev/sdb

Finally, we should end up with full usability of the drive.

fdisk -l /dev/sdb

Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/sdb doesn’t contain a valid partition table

Power cycle (not reboot) to confirm settings survive.

Updating the firmware on the drives:
Seagate 2TB ST32000542AS CC35 Firmware upgrade

Disabling HPA using hdparm:
unRAID Server Community parity