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тАО06-04-2015 08:55 AM
тАО06-04-2015 08:55 AM
BL460C G1 disk i/o error
Hello,
we are facing very strange issue with blades. We installed single SSD in it. And when we run disk i/o
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync
we get 8MB/s
Can anyone please tell us what is going wrong?
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тАО09-08-2015 12:20 AM
тАО09-08-2015 12:20 AM
Re: BL460C G1 disk i/o error
Did you get a solution to your issue? I am facing a similar situation wherein I get a similar output on two G7 blade servers with two HDDs
Server A:
fdisk -l /dev/sda |grep GB
Disk /dev/sda: 600.1 GB, 600093712384 bytes
dd if=/dev/zero of=/tmp/testfile bs=1M count=1000 oflag=direct
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 20.5775 s, 51.0 MB/s
Server B:
fdisk -l /dev/sda |grep GB
Disk /dev/sda: 600.1 GB, 600093712384 bytes
dd if=/dev/zero of=/tmp/testfile bs=1M count=1000 oflag=direct
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 4.06195 s, 258 MB/s
I am unable to explain this difference in I/O performance.
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тАО10-04-2015 11:10 AM
тАО10-04-2015 11:10 AM
Re: BL460C G1 disk i/o error
Hello,
please have on mind G1 servers smartarrays could by not strong enough to handle modern SSDs and your setup is oficially not supported.
2 second post: the same firmware level on both server?
Jan