今井です。 HDAMEX-SLIでSATA I/Fに接続されているデバイスは以下の通り # cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: HDT722525DLA380 Rev: V44O Type: Direct-Access ANSI SCSI revision: 05 Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: HDT722525DLA380 Rev: V44O Type: Direct-Access ANSI SCSI revision: 05 Host: scsi2 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: HDT722525DLA380 Rev: V44O Type: Direct-Access ANSI SCSI revision: 05 Host: scsi3 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: HDT722525DLA380 Rev: V44O Type: Direct-Access ANSI SCSI revision: 05 Host: scsi4 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: HDT722525DLA380 Rev: V44O Type: Direct-Access ANSI SCSI revision: 05 といずれもHDT(T7K250)でsdaからsddまでがnForceチップセットのSATA I/F接続 sdeのみSiI3124(SATA2RAID-PCIX)接続となります。 3GモードはいずれもONの状態でhdparm -tTコマンドの結果。 # for dev in /dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde ; do hdparm -tT $dev; done /dev/sda: Timing cached reads: 2404 MB in 2.00 seconds = 1202.89 MB/sec Timing buffered disk reads: 202 MB in 3.03 seconds = 66.78 MB/sec /dev/sdb: Timing cached reads: 2236 MB in 2.00 seconds = 1118.61 MB/sec Timing buffered disk reads: 192 MB in 3.02 seconds = 63.68 MB/sec /dev/sdc: Timing cached reads: 2260 MB in 2.00 seconds = 1129.07 MB/sec Timing buffered disk reads: 202 MB in 3.03 seconds = 66.71 MB/sec /dev/sdd: Timing cached reads: 2500 MB in 2.00 seconds = 1250.49 MB/sec Timing buffered disk reads: 192 MB in 3.03 seconds = 63.37 MB/sec /dev/sde: Timing cached reads: 2288 MB in 2.00 seconds = 1144.23 MB/sec Timing buffered disk reads: 202 MB in 3.01 seconds = 67.16 MB/sec まあ計測結果からしてみればいずれもほとんど変わらず?といったところです。 あとはCPU負荷とか多分違うんじゃないかと思うのでその辺りどうなんでしょうねぇ....。 -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 今井 優 mail: maimai@coral.ocn.ne.jp web: http://www10.ocn.ne.jp/~masimai/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~