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Western Digital Nomenclature Explained

The WD Caviar SE16 400 GB Gets Ready to Face The World
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Regular WD UltraATA drives are named based on their capacity followed by either the suffix BB (indicating 2 MB cache) or JB (8 MB). Serial ATA models are given the suffix JD ; they all feature 8 MB cache. If you come across a drive labeled JS, this is a SATA II model with 8 MB cache memory. Should you want the 16 MB cache option, it is a KS breed you need to look for.

Caviar Drive Suffix Cache Interface
BB 2 MB UltraATA/100
JB 8 MB UltraATA/100
SB (RAID Edition) 8 MB Ultra ATA/100
JD 8 MB Serial ATA/150
SD (RAID Edition) 8 MB Serial ATA/150
JS 8 MB Serial ATA/300
KS 16 MB Serial ATA/300
YR (RAID Edition 2) 16 MB Serial ATA/150 NCQ

The only suffix which is not part of this list is GD, which is used for the 10,000 RPM Raptor family drives, featuring 8 MB cache and the Serial ATA/150 interface.

Test Setup

Hardware I
Processor 2x Intel Xeon, 3.6 GHz
1 MB L2 Cache (Nocona)
Motherboard Asus NCL-DS
Intel E7520 Chipset
BIOS 1005
RAM 2x 512 MB DDR2-400 Corsair ECC Registered
CL 3-3-3-10
Controller PATA/USB Intel 82801EB (ICH5)
Controller SCSI Adaptec AIC-7902B Ultra320
Controller SATA Silicon Image Sil3124 4xPort SATA Controller
Graphics Card ATI RageXL , 8 MB
Network Broadcom BMC5721 PCIe Gigabit LAN Controller
OS Windows Server 2003
Service Pack 1
Benchmarks
Performance Benchmarks c’t h2benchw 3.6
PC Mark 2005 1.0.1
Drivers & Settings
Graphics Driver Windows Default Driver
Storage Drivers Intel INF Drivers 7.0.0.1025
DirectX Version 9.0c
Resolution 1024x768, 32 Bit, 85 Hz
Hardware II
Processor Intel Pentium Extreme Edition 840
(3.2 GHz, 2x 1 MB L2 Cache)
Motherboard Abit AW8-Max
Intel 955X Chipset
BIOS 1.3
RAM 2x 512 MB - DDR2-667 (333 MHz)
Corsair CM2X512A-5400UL (XMS5400 V1.2)
(CL3-2-2-8-1T @ 333 MHz)
Controller IDE ICH7
Graphics Card Asus Geforce 7800 GT
GPU : NVIDIA Geforce 7800 GT (400 MHz)
Memory : 256 MB DDR-SDRAM (500 MHz)
Network 3Com 905B
OS Windows XP Professional 5.10.2600, Service Pack 2
Benchmarks
I/O Performance IOMeter 2003.05.10
Fileserver-Benchmark
Webserver-Benchmark
Database-Benchmark
Workstation-Benchmark
Throughput-Benchmark
Drivers & Settings
Graphics Driver NVIDIA Forceware 77.77
Storage Driver Intel Chipset Software Installation Utility 7.2.1.1003
DirectX Version 9.0c
Resolution 1024x768, 32 Bit, 85 Hz
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