Rotational Speed 10,000 RPM (nominal)
Buffer Size 16 MB
Average Latency 2.99 ms (nominal)
Contact Start/Stop Cycles 20,000 minimum
Read Seek Time 4.6 ms
Write Seek Time 5.2 ms (average)
Track-To-Track Seek Time 0.4 ms (average)
Full Stroke Seek 10.2 ms (average)
Buffer To Host (Serial ATA) 1.5 Gb/s (Max)
Buffer To Disk 72 MB/s (Sustained)
Recommended Configuration Parameters
Number of Heads (Physical) 4
Formatted Capacity 150,039 MB
Capacity 150 GB
Interface SATA 150 MB/s
Actuator Type Rotary Voice Coil
Number of Platters 2
Bytes Per Sector 512
User Sectors Per Drive 293,046,768
Servo Type Embedded
**taps wusy on shoulder**
Did ya see where the 150gig and 74gig Raptor ravages the 15k SCSI drives
Seriously, SCSI drives do better on a large database multi-user environment, this is true due to faster i/o's and good transfers.
But if your 500gig drive is 3/4 full with small files and backups, even a desktop user can feel the lag of Raptors, and large database management is SCSI's forte, not loading F.E.A.R...
A 16MB cache should help a bit. I'm still a little disappointed they're continuing to use SATAI. The Raptor's come frightengly close to exceeding the 150MB/s SATAI sometimes.
From what I read (I can't remember where), they are sticking to SATA I because the IC level electronics involved are a little more mature, and they don't quite need SATA-II yet. However, as soon as that changes, they supposedly plan to release a SATA-II version (we shall see...)
**pats wusy reassuringly...**
Yes, that is an arena that SCSI server drives stand out from the crowd, and a reason for WD to tune the drives as to keep them from outperforming thier counterparts in order to maintain profitablity.
[/But in non-server environoments, ones like workstations, office PC's and gaming rigs, the Raptors are faster for most uses...]