Hardware vs Software RAID

Some basic tests between software and hardware raid. see below… cialis generico in contrassegno buy viagra cheap

Hardware RAID – 9260-8i
*/dev/sda1 is the RAID6 ARRAY

root@donkey:~# time sh -c “dd if=/dev/zero of=/data/testfile bs=100k count=1k && sync”
1024+0 records in
1024+0 records out
104857600 bytes (105 MB) copied, 0.102246 s, 1.0 GB/s hard sell evolution viagra salesman quotes comprar genericos do viagra

real 0m0.710s
user 0m0.000s
sys 0m0.112s

root@donkey:~# dd if=/dev/zero of=/data/test1.img bs=1G count=1 oflag=dsync
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 3.37577 s, 318 MB/s buy viagra generic canada buy pink viagra

root@donkey:~# hdparm -tT /dev/sda1
/dev/sda1:
Timing cached reads: 4238 MB in 2.00 seconds = 2119.34 MB/sec
Timing buffered disk reads: 1334 MB in 3.00 seconds = 444.65 MB/sec acheter cialis 20 mg

Software RAID – MDADM
*RAID 5

root@backupsrv:~# time sh -c “dd if=/dev/zero of=/data/testfile bs=100k count=1k && sync”
1024+0 records in
1024+0 records out
104857600 bytes (105 MB) copied, 2.01138 s, 52.1 MB/s

real 0m3.378s
user 0m0.000s
sys 0m0.208s

root@backupsrv:~# dd if=/dev/zero of=/data/test1.img bs=1G count=1 oflag=dsync
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 17.8867 s, 60.0 MB/s

root@backupsrv:~# hdparm -tT /dev/md127
/dev/md127:
Timing cached reads: 3736 MB in 2.00 seconds = 1867.94 MB/sec
Timing buffered disk reads: 1020 MB in 3.00 seconds = 339.57 MB/sec best generic viagra manufacturer 10mg or 20mg of cialis