Apologies if this has been asked before.
We have a DS14MK4 shelf with 144G FC disks and 2 ESH4 modules that's no longer in production. I've heard of people using these shelves as direct-attached storage (no filer head, just directly cabled to a host), but I haven't been able to pull up any details after searching online. I figure if anybody has tried something this silly, they're probably on this mailing list :)
Has anybody been able to get this to work? Any tips/tricks?
Thanks! Don Elmore IT Manager Volition, Inc.
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Hi Don
I've briefly connected a DS14MK2 FC to a Linux host using a QLogic HBA directly connected to one of the ESH2s. I don't recall the details but remember it being pretty straightforward so long as you get the QLogic drivers right. YMMV.
You'll end up with a bunch of "raw" disks and will need to RAID or otherwise aggregate the storage in software. An OpenSolaris host using ZFS would be one interesting place to start.
I hope that helps
Regards Steve
On 6 Jan 2012, at 18:01, "Don Elmore" <Don.Elmore@volition-inc.commailto:Don.Elmore@volition-inc.com> wrote:
Apologies if this has been asked before.
We have a DS14MK4 shelf with 144G FC disks and 2 ESH4 modules that’s no longer in production. I’ve heard of people using these shelves as direct-attached storage (no filer head, just directly cabled to a host), but I haven’t been able to pull up any details after searching online. I figure if anybody has tried something this silly, they’re probably on this mailing list ☺
Has anybody been able to get this to work? Any tips/tricks?
Thanks! Don Elmore IT Manager Volition, Inc.
________________________________ This message, including any attachments, may contain privileged and/or confidential information. Any distribution or use of this email by anyone other than the intended recipient(s) is strictly prohibited. If you are not the intended recipient, please notify the sender immediately and delete all copies. Thank you. <ATT00001.c>
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Don> Apologies if this has been asked before. We have a DS14MK4 shelf Don> with 144G FC disks and 2 ESH4 modules that's no longer in Don> production. I've heard of people using these shelves as Don> direct-attached storage (no filer head, just directly cabled to a Don> host), but I haven't been able to pull up any details after Don> searching online. I figure if anybody has tried something this Don> silly, they're probably on this mailing list :)
Don> Has anybody been able to get this to work? Any tips/tricks?
I tried to do something like this about two years ago with a SunBlade 100 running Solaris 10, maybe 9, and using ZFS. Never got it to work reliably for whatever reason, and gave up. I was probably using a DS14mk2 though, so who knows.
As I recall, the biggest issue was the 520 byte sectors the Netapp drives come with, instead of the expected 512 byte sectors that most drives use natively. I seem to recall there was a trick you could use to make it work, but the hardware is gone so I can look it up.
Sorry, John John Stoffel - Senior Staff Systems Administrator - System LSI Group Toshiba America Electronic Components, Inc. - http://www.toshiba.com/taec john.stoffel@taec.toshiba.com - 508-486-1087
I imagine you could do the reverse of this hack to change from the NTAP 520 byte format to 512 byte format:
http://www.liveinternet.ru/users/vardomskiy/post127616861/
I've never tried either, so your mileage may vary.
-----Original Message----- From: toasters-bounces@teaparty.net on behalf of John Stoffel Sent: Fri 1/6/2012 1:06 PM To: Don Elmore Cc: toasters@teaparty.net Subject: Re: DS14MK4 as DAS
Don> Apologies if this has been asked before. We have a DS14MK4 shelf Don> with 144G FC disks and 2 ESH4 modules that's no longer in Don> production. I've heard of people using these shelves as Don> direct-attached storage (no filer head, just directly cabled to a Don> host), but I haven't been able to pull up any details after Don> searching online. I figure if anybody has tried something this Don> silly, they're probably on this mailing list :)
Don> Has anybody been able to get this to work? Any tips/tricks?
I tried to do something like this about two years ago with a SunBlade 100 running Solaris 10, maybe 9, and using ZFS. Never got it to work reliably for whatever reason, and gave up. I was probably using a DS14mk2 though, so who knows.
As I recall, the biggest issue was the 520 byte sectors the Netapp drives come with, instead of the expected 512 byte sectors that most drives use natively. I seem to recall there was a trick you could use to make it work, but the hardware is gone so I can look it up.
Sorry, John John Stoffel - Senior Staff Systems Administrator - System LSI Group Toshiba America Electronic Components, Inc. - http://www.toshiba.com/taec john.stoffel@taec.toshiba.com - 508-486-1087 _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
Thanks everyone! We attached the shelf to a Linux host and are able to see all 14 disks. CentOS is detecting them oddly, so we're still working through the details. I'll report back with when we get this working!
From: Herring, Jason [mailto:jherring@insightinvestments.com] Sent: Friday, January 06, 2012 3:14 PM To: John Stoffel; Don Elmore Cc: toasters@teaparty.net Subject: RE: DS14MK4 as DAS
I imagine you could do the reverse of this hack to change from the NTAP 520 byte format to 512 byte format:
http://www.liveinternet.ru/users/vardomskiy/post127616861/
I've never tried either, so your mileage may vary.
-----Original Message----- From: toasters-bounces@teaparty.net on behalf of John Stoffel Sent: Fri 1/6/2012 1:06 PM To: Don Elmore Cc: toasters@teaparty.net Subject: Re: DS14MK4 as DAS
Don> Apologies if this has been asked before. We have a DS14MK4 shelf Don> with 144G FC disks and 2 ESH4 modules that's no longer in Don> production. I've heard of people using these shelves as Don> direct-attached storage (no filer head, just directly cabled to a Don> host), but I haven't been able to pull up any details after Don> searching online. I figure if anybody has tried something this Don> silly, they're probably on this mailing list :)
Don> Has anybody been able to get this to work? Any tips/tricks?
I tried to do something like this about two years ago with a SunBlade 100 running Solaris 10, maybe 9, and using ZFS. Never got it to work reliably for whatever reason, and gave up. I was probably using a DS14mk2 though, so who knows.
As I recall, the biggest issue was the 520 byte sectors the Netapp drives come with, instead of the expected 512 byte sectors that most drives use natively. I seem to recall there was a trick you could use to make it work, but the hardware is gone so I can look it up.
Sorry, John John Stoffel - Senior Staff Systems Administrator - System LSI Group Toshiba America Electronic Components, Inc. - http://www.toshiba.com/taec john.stoffel@taec.toshiba.commailto:john.stoffel@taec.toshiba.com - 508-486-1087 _______________________________________________ Toasters mailing list Toasters@teaparty.netmailto:Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters
________________________________ This message, including any attachments, may contain privileged and/or confidential information. Any distribution or use of this email by anyone other than the intended recipient(s) is strictly prohibited. If you are not the intended recipient, please notify the sender immediately and delete all copies. Thank you.
On Fri, Jan 06, 2012 at 09:37:27AM -0800, Don Elmore wrote:
Apologies if this has been asked before.
We have a DS14MK4 shelf with 144G FC disks and 2 ESH4 modules that's no longer in production. I've heard of people using these shelves as direct-attached storage (no filer head, just directly cabled to a host), but I haven't been able to pull up any details after searching online. I figure if anybody has tried something this silly, they're probably on this mailing list :)
Has anybody been able to get this to work? Any tips/tricks?
That works very nice. I have a FreeBSD box with 4 NetApp shelves and ZFS. You have to reformat the disks to 512 bytes/sector. If you connect both loops, some software has to do something clever (I did not). I did not use DS14MK4, but DS14FC-X, but I am sure that is very similar.
(And if you reformat them to 520 b/s, OnTap accepts the disks again.)
dmesg excerpt:
FC controllers mpt0 and mpt1 as mpt0: <Dual LSILogic FC929X 2Gb/s FC PCI-X Adapter> port 0x3000-0x30ff mem 0xdd210000-0xdd21ffff,0xdd200000-0xdd20ffff irq 24 at device 1.0 on pci5 mpt0: [ITHREAD] mpt0: MPI Version=1.2.9.0 mpt0: mpt_read_cfg_header: Config Info Status 20
then ses0..ses3 as ses0 at mpt0 bus 0 scbus0 target 0 lun 0 ses0: <ARIODATA SANARIO-FST 0208> Fixed Enclosure Services SCSI-4 device ses0: 100.000MB/s transfers ses0: SCSI-3 SES Device
then da0..da55 da0 at mpt0 bus 0 scbus0 target 2 lun 0 da0: <Maxtor ST3320630NS AD 3QZ> Fixed Direct Access SCSI-4 device da0: 100.000MB/s transfers da0: Command Queueing enabled da0: 308857MB (632541135 512 byte sectors: 255H 63S/T 39373C)
Grtnx,
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Bert Kiers -
Don Elmore -
Herring, Jason -
John Stoffel -
Stephen Stocke