FAQ
Hello all,
We are considering using low end HP proliant machines (DL160s and DL180s)
for cluster nodes. However with these machines if you want to do more than 4
hard drives then HP puts in a P410 raid controller. We would configure the
RAID controller to function as JBOD, by simply creating multiple RAID
volumes with one disk. Does anyone have experience with this setup? Is it a
good idea, or am i introducing a i/o bottleneck?
Thanks for your help!
Best, Koert

Search Discussions

  • Bharath Mundlapudi at Aug 11, 2011 at 10:00 pm
    True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD.


    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
  • GOEKE, MATTHEW (AG/1000) at Aug 11, 2011 at 10:14 pm
    My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it.

    Matt

    -----Original Message-----
    From: Bharath Mundlapudi
    Sent: Thursday, August 11, 2011 5:00 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD.


    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
    This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled
    to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and
    all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited.

    All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its
    subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware".
    Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying
    this e-mail or any attachment.


    The information contained in this email may be subject to the export control laws and regulations of the United States, potentially
    including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of
    Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all
    applicable U.S. export laws and regulations.
  • Kai Voigt at Aug 11, 2011 at 10:17 pm
    Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry

    But updated benchmark would be interesting to see.

    Kai

    Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000):
    My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it.

    Matt

    -----Original Message-----
    From: Bharath Mundlapudi
    Sent: Thursday, August 11, 2011 5:00 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD.


    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
    This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled
    to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and
    all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited.

    All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its
    subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware".
    Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying
    this e-mail or any attachment.


    The information contained in this email may be subject to the export control laws and regulations of the United States, potentially
    including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of
    Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all
    applicable U.S. export laws and regulations.
    --
    Kai Voigt
    k@123.org
  • GOEKE, MATTHEW (AG/1000) at Aug 11, 2011 at 10:24 pm
    If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids.

    Matt

    -----Original Message-----
    From: Kai Voigt
    Sent: Thursday, August 11, 2011 5:17 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry

    But updated benchmark would be interesting to see.

    Kai

    Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000):
    My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it.

    Matt

    -----Original Message-----
    From: Bharath Mundlapudi
    Sent: Thursday, August 11, 2011 5:00 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD.


    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
    This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled
    to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and
    all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited.

    All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its
    subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware".
    Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying
    this e-mail or any attachment.


    The information contained in this email may be subject to the export control laws and regulations of the United States, potentially
    including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of
    Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all
    applicable U.S. export laws and regulations.
    --
    Kai Voigt
    k@123.org
  • Charles Wimmer at Aug 11, 2011 at 10:27 pm
    We currently use P410s in 12 disk system. Each disk is set up as a RAID0 volume. Performance is at least as good as a bare disk.


    On 8/11/11 3:23 PM, "GOEKE, MATTHEW (AG/1000)" wrote:

    If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids.

    Matt

    -----Original Message-----
    From: Kai Voigt
    Sent: Thursday, August 11, 2011 5:17 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry

    But updated benchmark would be interesting to see.

    Kai

    Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000):
    My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it.

    Matt

    -----Original Message-----
    From: Bharath Mundlapudi
    Sent: Thursday, August 11, 2011 5:00 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD.


    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
    This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled
    to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and
    all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited.

    All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its
    subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware".
    Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying
    this e-mail or any attachment.


    The information contained in this email may be subject to the export control laws and regulations of the United States, potentially
    including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of
    Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all
    applicable U.S. export laws and regulations.
    --
    Kai Voigt
    k@123.org
  • Koert Kuipers at Aug 12, 2011 at 12:11 am
    Hey Charles, I was considering using 8 drives, each set as RAID0, so its
    good to hear such a setup is working for you.
    Best Koert
    On Thu, Aug 11, 2011 at 6:26 PM, Charles Wimmer wrote:

    We currently use P410s in 12 disk system. Each disk is set up as a RAID0
    volume. Performance is at least as good as a bare disk.


    On 8/11/11 3:23 PM, "GOEKE, MATTHEW (AG/1000)" wrote:

    If I read that email chain correctly then they were referring to the
    classic JBOD vs multiple disks striped together conversation. The
    conversation that was started here is referring to JBOD vs 1 RAID 0 per disk
    and the effects of the raid controller on those independent raids.

    Matt

    -----Original Message-----
    From: Kai Voigt
    Sent: Thursday, August 11, 2011 5:17 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    Yahoo did some testing 2 years ago:
    http://markmail.org/message/xmzc45zi25htr7ry

    But updated benchmark would be interesting to see.

    Kai

    Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000):
    My assumption would be that having a set of 4 raid 0 disks would actually
    be better than having a controller that allowed pure JBOD of 4 disks due to
    the cache on the controller. If anyone has any personal experience with this
    I would love to know performance numbers but our infrastructure guy is doing
    tests on exactly this over the next couple days so I will pass it along once
    we have it.
    Matt

    -----Original Message-----
    From: Bharath Mundlapudi
    Sent: Thursday, August 11, 2011 5:00 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    True, you need a P410 controller. You can create RAID0 for each disk to
    make it as JBOD.

    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
    This e-mail message may contain privileged and/or confidential
    information, and is intended to be received only by persons entitled
    to receive such information. If you have received this e-mail in error,
    please notify the sender immediately. Please delete it and
    all attachments from any servers, hard drives or any other media. Other
    use of this e-mail by you is strictly prohibited.
    All e-mails and attachments sent and received are subject to monitoring,
    reading and archival by Monsanto, including its
    subsidiaries. The recipient of this e-mail is solely responsible for
    checking for the presence of "Viruses" or other "Malware".
    Monsanto, along with its subsidiaries, accepts no liability for any
    damage caused by any such code transmitted by or accompanying
    this e-mail or any attachment.


    The information contained in this email may be subject to the export
    control laws and regulations of the United States, potentially
    including but not limited to the Export Administration Regulations (EAR)
    and sanctions regulations issued by the U.S. Department of
    Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of
    this information you are obligated to comply with all
    applicable U.S. export laws and regulations.
    --
    Kai Voigt
    k@123.org




  • Mohit Anchlia at Aug 12, 2011 at 12:15 am
    On Thu, Aug 11, 2011 at 3:26 PM, Charles Wimmer wrote:
    We currently use P410s in 12 disk system.  Each disk is set up as a RAID0 volume.  Performance is at least as good as a bare disk.
    Can you please share what throughput you see with P410s? Are these SATA or SAS?

    On 8/11/11 3:23 PM, "GOEKE, MATTHEW (AG/1000)" wrote:

    If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids.

    Matt

    -----Original Message-----
    From: Kai Voigt
    Sent: Thursday, August 11, 2011 5:17 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry

    But updated benchmark would be interesting to see.

    Kai

    Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000):
    My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it.

    Matt

    -----Original Message-----
    From: Bharath Mundlapudi
    Sent: Thursday, August 11, 2011 5:00 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD.


    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
    This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled
    to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and
    all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited.

    All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its
    subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware".
    Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying
    this e-mail or any attachment.


    The information contained in this email may be subject to the export control laws and regulations of the United States, potentially
    including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of
    Treasury, Office of Foreign Asset Controls (OFAC).  As a recipient of this information you are obligated to comply with all
    applicable U.S. export laws and regulations.
    --
    Kai Voigt
    k@123.org




  • Charles Wimmer at Aug 14, 2011 at 11:01 pm
    [cwimmer@hostname bonnie++-1.03e]$ ./bonnie++ -d . -s 50000 -m P410 -f
    Writing intelligently...done
    Rewriting...done
    Reading intelligently...done
    start 'em...done...done...done...
    Create files in sequential order...done.
    Stat files in sequential order...done.
    Delete files in sequential order...done.
    Create files in random order...done.
    Stat files in random order...done.
    Delete files in random order...done.
    Version 1.03e ------Sequential Output------ --Sequential Input- --Random-
    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
    Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
    P410 50000M 68392 12 21153 3 116423 4 216.8 0
    ------Sequential Create------ --------Random Create--------
    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
    files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
    16 22238 33 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++


    P410,50000M,,,68392,12,21153,3,,,116423,4,216.8,0,16,22238,33,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++



    On 8/11/11 5:15 PM, "Mohit Anchlia" wrote:
    On Thu, Aug 11, 2011 at 3:26 PM, Charles Wimmer wrote:
    We currently use P410s in 12 disk system. Each disk is set up as a RAID0 volume. Performance is at least as good as a bare disk.
    Can you please share what throughput you see with P410s? Are these SATA or SAS?

    On 8/11/11 3:23 PM, "GOEKE, MATTHEW (AG/1000)" wrote:

    If I read that email chain correctly then they were referring to the classic JBOD vs multiple disks striped together conversation. The conversation that was started here is referring to JBOD vs 1 RAID 0 per disk and the effects of the raid controller on those independent raids.

    Matt

    -----Original Message-----
    From: Kai Voigt
    Sent: Thursday, August 11, 2011 5:17 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    Yahoo did some testing 2 years ago: http://markmail.org/message/xmzc45zi25htr7ry

    But updated benchmark would be interesting to see.

    Kai

    Am 12.08.2011 um 00:13 schrieb GOEKE, MATTHEW (AG/1000):
    My assumption would be that having a set of 4 raid 0 disks would actually be better than having a controller that allowed pure JBOD of 4 disks due to the cache on the controller. If anyone has any personal experience with this I would love to know performance numbers but our infrastructure guy is doing tests on exactly this over the next couple days so I will pass it along once we have it.

    Matt

    -----Original Message-----
    From: Bharath Mundlapudi
    Sent: Thursday, August 11, 2011 5:00 PM
    To: common-user@hadoop.apache.org
    Subject: Re: Question about RAID controllers and hadoop

    True, you need a P410 controller. You can create RAID0 for each disk to make it as JBOD.


    -Bharath



    ________________________________
    From: Koert Kuipers <koert@tresata.com>
    To: common-user@hadoop.apache.org
    Sent: Thursday, August 11, 2011 2:50 PM
    Subject: Question about RAID controllers and hadoop

    Hello all,
    We are considering using low end HP proliant machines (DL160s and DL180s)
    for cluster nodes. However with these machines if you want to do more than 4
    hard drives then HP puts in a P410 raid controller. We would configure the
    RAID controller to function as JBOD, by simply creating multiple RAID
    volumes with one disk. Does anyone have experience with this setup? Is it a
    good idea, or am i introducing a i/o bottleneck?
    Thanks for your help!
    Best, Koert
    This e-mail message may contain privileged and/or confidential information, and is intended to be received only by persons entitled
    to receive such information. If you have received this e-mail in error, please notify the sender immediately. Please delete it and
    all attachments from any servers, hard drives or any other media. Other use of this e-mail by you is strictly prohibited.

    All e-mails and attachments sent and received are subject to monitoring, reading and archival by Monsanto, including its
    subsidiaries. The recipient of this e-mail is solely responsible for checking for the presence of "Viruses" or other "Malware".
    Monsanto, along with its subsidiaries, accepts no liability for any damage caused by any such code transmitted by or accompanying
    this e-mail or any attachment.


    The information contained in this email may be subject to the export control laws and regulations of the United States, potentially
    including but not limited to the Export Administration Regulations (EAR) and sanctions regulations issued by the U.S. Department of
    Treasury, Office of Foreign Asset Controls (OFAC). As a recipient of this information you are obligated to comply with all
    applicable U.S. export laws and regulations.
    --
    Kai Voigt
    k@123.org




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