SEO
vBulletin Search Engine Optimization
| |||||||
| Register | FAQ | Members List | Calendar | Search | Today's Posts | Mark Forums Read |
01-16-2008, 11:01 AM
| ||||
| ||||
 A1000 Array Question We are about to buy a A1000 array for our oracle application. After looking at Sun web site I am bit confused about the configuration of the H/W SG-XARY170A-436G from sun.co.uk, states that it has 1 RAID controller and 2 SCSI host ports, does that mean I can use the RAID card to control some of the disk and use SCSI controllers controll the other disk ? Basicly I want to have H/W RAID 0+1 for my oracle datafiles and possibly software RAID 1 for logs etc. Will the A1000 allowe me to do that ?      |
|
01-16-2008, 11:01 AM
| |||
| |||
| Re: A1000 Array Question In <3f60467b.1132216120@news.demon.co.uk> rc@(no-spam)!bhfshops.org.uk writes: >We are about to buy a A1000 array for our oracle application. >After looking at Sun web site I am bit confused about the >configuration of the H/W >SG-XARY170A-436G from sun.co.uk, states that it has 1 RAID controller >and 2 SCSI host ports, does that mean I can use the RAID card to >control some of the disk and use SCSI controllers controll the other >disk ? No. I think you are confusing the A1000 and the D1000. The A1000 has a hardware raid controller and a single SCSI connection to a Ultra High Voltage Differential controller. The D1000 has no hardware raid but can be split so that two controllers can be used, one for each half. These devices are getting old; you should look for something more modern. >Basicly I want to have H/W RAID 0+1 for my oracle datafiles and >possibly software RAID 1 for logs etc. >Will the A1000 allowe me to do that ? The A1000 supports multiple LUNs with different configurations, but it's all hardware RAID. Why would you want the extra work of having to do software RAID? -- David B. Chorlian Neurodynamics Lab SUNY/HSCB chorlian@spot.cns.hscbklyn.edu davidc@panix.com |
|
01-16-2008, 11:02 AM
| |||
| |||
| Re: A1000 Array Question rc@(no-spam)!bhfshops.org.uk wrote: > We are about to buy a A1000 array for our oracle application. > After looking at Sun web site I am bit confused about the > configuration of the H/W > SG-XARY170A-436G from sun.co.uk, states that it has 1 RAID controller > and 2 SCSI host ports, does that mean I can use the RAID card to > control some of the disk and use SCSI controllers controll the other > disk ? > Basicly I want to have H/W RAID 0+1 for my oracle datafiles and > possibly software RAID 1 for logs etc. > Will the A1000 allowe me to do that ? Why use software RAID at all? A1000 is a HW raid box. Anyways, I would suggest to skip the A1000/D1000 to look at Sun's newer SCSI disk arrays. A1000 is still a good workhorse but it's a relatively old technology, expensive, probably has the most arcane SCSI disk array I have ever dealt with. It's good only if you need to connect it to Solaris 7 or 2.6 machines since the newer disk arrays are not supported on those. -- Akop Pogosian This space has been accidentally left blank. |
|
01-16-2008, 11:02 AM
| |||
| |||
| Re: A1000 Array Question David B. Chorlian <davidc@panix.com> wrote in message news:<bjq9gj$mlt$1@reader2.panix.com>... > > > No. I think you are confusing the A1000 and the D1000. > The A1000 has a hardware raid controller and a single SCSI > connection to a Ultra High Voltage Differential controller. > The D1000 has no hardware raid but can be split so that > two controllers can be used, one for each half. > These devices are getting old; you should look for something > more modern. > Sorry but the A1000 does have 2 SCSI ports. Normally you would connect your cable to the 1st SCSI port and then have a terminator on the 2nd SCSI port. It is possible to remove the terminator and connect a second host if you do all the necessary changes (multiple scsi initators). Do a search on "dual hosted A1000". So with that in mind you'll see that the D1000 actually 4 SCSI ports.... It's very easy to forget that just because there is a terminator on the SCSI port doesn't mean it can't be used... i know I 've done that before... hth, j |
|
01-16-2008, 11:02 AM
| |||
| |||
| Re: A1000 Array Question In <31a28a6c.0309120245.48dee9ab@posting.google.com > fishinjts@netscape.net (John S.) writes: >David B. Chorlian <davidc@panix.com> wrote in message news:<bjq9gj$mlt$1@reader2.panix.com>... >> >> >> No. I think you are confusing the A1000 and the D1000. >> The A1000 has a hardware raid controller and a single SCSI >> connection to a Ultra High Voltage Differential controller. >> The D1000 has no hardware raid but can be split so that >> two controllers can be used, one for each half. >> These devices are getting old; you should look for something >> more modern. >> >Sorry but the A1000 does have 2 SCSI ports. Normally you would connect >your cable to the 1st SCSI port and then have a terminator on the 2nd >SCSI port. It is possible to remove the terminator and connect a >second host if you do all the necessary changes (multiple scsi >initators). Do a search on "dual hosted A1000". Sorry, but you're confusing ports and connectors. Every box containing a SCSI device I've seen has two connectors for daisy-chaining. Whether what's inside is capable of responding to requests from independent sources is a different question. My A1000 Manual has no mention of "dual hosted A1000". >So with that in mind you'll see that the D1000 actually 4 SCSI >ports.... >It's very easy to forget that just because there is a terminator on >the SCSI port doesn't mean it can't be used... i know I 've done that >before... >hth, >j -- David B. Chorlian Neurodynamics Lab SUNY/HSCB chorlian@spot.cns.hscbklyn.edu davidc@panix.com |
|
01-16-2008, 11:02 AM
| |||
| |||
| Re: A1000 Array Question On Thu, 11 Sep 2003 22:42:58 +0000 (UTC), Akop Pogosian <akopps+usenet@ocf.berkeley.edu> wrote: >rc@(no-spam)!bhfshops.org.uk wrote: >> We are about to buy a A1000 array for our oracle application. >> After looking at Sun web site I am bit confused about the >> configuration of the H/W > >> SG-XARY170A-436G from sun.co.uk, states that it has 1 RAID controller >> and 2 SCSI host ports, does that mean I can use the RAID card to >> control some of the disk and use SCSI controllers controll the other >> disk ? > >> Basicly I want to have H/W RAID 0+1 for my oracle datafiles and >> possibly software RAID 1 for logs etc. > >> Will the A1000 allowe me to do that ? > >Why use software RAID at all? A1000 is a HW raid box. Anyways, I would >suggest to skip the A1000/D1000 to look at Sun's newer SCSI disk >arrays. A1000 is still a good workhorse but it's a relatively old >technology, expensive, probably has the most arcane SCSI disk array I >have ever dealt with. It's good only if you need to connect it to >Solaris 7 or 2.6 machines since the newer disk arrays are not >supported on those. Can any one sugget a newer disk array, I need about 160 GB total disk space, will be connecting it to a Sun fire 280R running Solaris 8 To keep the cost down I am considreing putting only the oracle data files on RAID arrary and the rest can be on non RAID disks only. |
|
01-16-2008, 11:02 AM
| ||||
| ||||
| Re: A1000 Array Question David B. Chorlian <davidc@panix.com> wrote: > Sorry, but you're confusing ports and connectors. Every box > containing a SCSI device I've seen has two connectors for > daisy-chaining. Whether what's inside is capable of responding > to requests from independent sources is a different question. I'm fairly sure all SCSI devices are required to respond to multiple initiators, as a part of the standard SCSI spec. > My A1000 Manual has no mention of "dual hosted A1000". From memory a dual-ported A1000 is only officially supported in a Sun Cluster environment, although it will work in any config as long as you have termination at both ends of the bus. Scott. |
Linear Mode
