自社バックアップサーバ HDD
# dd if=/dev/zero of=/tmp/disktest bs=1MB count=2048 ; rm -f /tmp/disktest 2048+0 records in 2048+0 records out 2048000000 bytes (2.0 GB) copied, 12.0685 s, 170 MB/s
170MB/s
HDDであれば200MBが良いぐらいの目安。
ConoHa 3CPU 2GB SSD
# dd if=/dev/zero of=/tmp/disktest bs=1MB count=2048 ; rm -f /tmp/disktest 2048+0 records in 2048+0 records out 2048000000 bytes (2.0 GB) copied, 2.6935 s, 760 MB/s
760MB/s
SSDは速いね。




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