ciao di nuovo a tutti...
nel pc che voglio farmi ho pensato per risparmiare qualcosa (e farlo più veloce) di utilizzare come hard disk di sistema un raid 0 fatto con due seagate barracuda 7200.9 da 160gb che ho già, affiancati poi da un hd secondario capiente come storage. che dite ci guadagno qualcosa o spreco solo 10W in più? come faccio a vedere se i miei barracuda sono ancora in forma?
comunque ecco qui le specifiche dei miei hd:
Drive specification ST3160811AS ST3160211AS
Formatted Gbytes (512 bytes/sector)* 160
Heads 2
Discs 1
Guaranteed sectors 312,581,808
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density, KBPI (kbits/in max) 756.09
Track density, KTPI (ktracks/in avg.) 141.95
Areal density, (Gbits/in
2
avg) 103.8
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbits/sec max) 867.2
Sustained data transfer rate OD (Mbytes/sec max) 80
I/O data-transfer rate (Mbytes/sec max) 300
ATA data-transfer modes supported PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer 8 Mbytes 2 Mbytes
Height (mm max) 19.99 mm (0.787 inches)
Width (mm max) 101.6 mm (4.000 inches) +/- 0.010 inches
Length (mm max) 146.99 mm (5.787 inches)
Weight (max) 380 grams (0.838 lb.)
Average latency (msec) 4.16
Power-on to ready (sec max) <10.0 sec
Standby to ready (sec max) <10.0 sec
Track-to-track seek time (msec typical) <0.8 (read), <1.0 (write)
Average seek time (msec typical) <12.9 (read, <13.9 (write)
Startup current (typical) 12V (peak) 2.8 amps
Voltage tolerance (including noise) 5V ± 5%
12V ± 10%
Ambient temperature 0° to 60°C (operating)
–40° to 70°C (nonoperating)
Temperature gradient (°C per hour max) 20°C (operating)
30°C (nonoperating)
Relative humidity 5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 37.7 (operating)
40.0 (nonoperating)
Altitude, operating –60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)
Altitude, nonoperating
(below mean sea level, max)
–60.96 m to 12,192 m
(–200 ft. to 40,000+ ft.)
Operational Shock (Gs max at 2 msec) 63
Non-Operational Shock (Gs max at 2 msec) 350 Gs
Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 0.5 Gs
350–500 Hz:: 0.25 GsBarracuda 7200.9 Serial ATA Product Manual, Rev. C 5
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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.
Vibration, nonoperating 5–22 Hz: 0.25 Gs, Limited displacement
22–350 Hz: 5.0 Gs
350–500 Hz:: 1.0 Gs
Drive acoustics, sound power (bels)
Idle** 2.7 (typical)
2.8 (max)
Seek 2.9 (typical)
3.1 (max)
Nonrecoverable read errors 1 per 10
14
bits read
Annualized Failure Rate (AFR) 0.34%
Warranty 5 years on distribution units.
To determine the warranty for a specific drive, use a web browser to
access the following web page:
www.seagate.com/support/service/
From this page, click on the “Verify Your Warranty” link. You will be
asked to provide the drive serial number, model number (or part number) and country of purchase. The system will display the warranty information for your drive.
Contact start-stop cycles
(25°C, 50% rel. humidity)
50,000
Supports Hotplug operation per SATA II
specification
Yes