Using slower SATA drives for FRA and archivelogs

1. I am looking for some advice on storage tiering on a SAN for my oracle database. I currently have a SAN with all 15K SAS drives and I am looking to expand on the SAN and add a bank of SATA 7.2 K drives. I would like to locate our FRA including our oracle “disk to disk” backups and our archive logs to these 7.2 SATA drives and I was wondering what if any effect this would have on our production database?
2. Also I was also considering placing a development instance entirely on the 7.2K drives and was wondering what to expect for performance regarding this?
Thanks

Thanks for the link. And on page 30: "The weakest link determines the IO throughput."
Of course, this ballpark back of the envelope rough approximation can be blown apart by a couple of plan changes in the sql. And the sql is the most common reason for performance problems.
Speed of slower disks can make a difference, which difference can vary based on how close to saturation the I/O is. In a lightly loaded system, reports and such may simply take twice as long. As either cpu run queue lengths or i/o wait times increase, things can go south fast. If a development system is not a very close copy of a production system, it may be difficult to replicate performance problems. Of course any little thing can do that too. It's kind of rare in my experience to have a close hardware copy, YMMV.
Craig Shallahamer and Cary MIllsap have written some books you may be interested in if you haven't seen them. Find Cary's "Thinking clearly about performance" paper.

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mac HD
capacity: 232.57g
available: 170.29g
iomega
capacity: 298.02g
available: 14.29g
one touch 4
capacity: 698.51g
available: 698.36g
thanks for the quick reply but i need to explain it better or ask, once all is backed up from my mac HD and my iomega external drive to my new one touch 4 i want to stop using the iomega since there isn't much room left on it
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Using same External drive for iMac and iBook

Hello all,
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http://www.macintouch.com/readerreports/firewire/topic2199.html
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I have a new Mac Pro. I want to use my old Mac Pro as a storage drive for photos and old documents, linked to my new Mac Pro. How do I set up the old computer?

I have a new Mac Pro. I want to use my old Mac Pro as a storage drive for photos and old documents, linked to my new Mac Pro. How do I set up the old computer? Both computers have OS X10.9.3. Currently they are connected by a Firewire 800 cable.

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cheers
-j-

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have you done some searches on FCPx and time machine? Is there a known issue with using a TM drive with FCPx? dunno but ...wait...I'll take 60 sec for you cause I'm just that kind of guy.... google...." fcpx time machine problem" Frist page link
http://www.premiumbeat.com/blog/fcpx-bug-best-practices-for-using-external-hard- drives-and-final-cut-pro-x/
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booya!

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rgraves wrote:
I have a 2TB external drive which I use for Time Machine Backups on my 2 macs. The macs have HDs of 500GB and 160GB so the external drive has ample space for backups.
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Hello,
I just bought a external 320Gb Western Digital Drive. I would like to use
the drive for windows and mac.I will not like to make partation on the drive
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Thanx.

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I doubt this can be relocated or moved so you might want to just repost in the macbook pro area.
MacBook Pro
https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os?view=discussions
Can you afford a new Thunderbolt case and cable? any case with FW800 is going to be slow 72MB/sec and less, and any new 1TB drive is capable of 75MB/s minimum up to 125MB/sec.
Thunderbolt storage can of course when setup properly reach 100's of MB higher using multiple drives.
Use what you have for a system backup or for secondary backup storage.
you might be able to take the drive - most cases allow you to open and swap drives - and use this:
G-Technology 1TB G-DRIVE mini High-Speed Portable Hard Drive
or this:
http://store.apple.com/us/product/HB137VC/A/g-technology-4tb-g-raid-professional -high-performance-dual-drive-hard-drive?fnode=5f

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http://eshop.macsales.com/item/Seagate/ST3250823AS/
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(Rep points given)

Hitachi 400GB was trouble even on SeriTek controllers. Like the early 7K250, it was not a native SATA drive. Early SATA drives were often using Marvel or some other bridge on PATA drives. The T7K250 and 7K500, or Maxtor are fine. WD has some new drives, one model is optimized for RAID-only firmware.
Whatever happened to just plug in and go, anyway?

Where's the SATA Driver for 64-bit???

Hi there, i have a MSI Board for dual Opteron, and also got the new Windows XP 64 bit (Opteron edition) to try, but the problem gets big is were the hell im gonna put SATA drivers during the windows installation, where there is no 64 bit driver.
Im very disapointed with MSI and VIA Partner, by building Motherboards for Opteron/Atlhon 64, and not giving a damm good support for the upcoming 64 bit platform.
The way i see is either they are laisy or they took a the oportunity to make money by just selling lies.

Quote
Originally posted by Bas
Hi,
That's a bit of a problem at the moment.
Very little manufacturers make Win-64 drivers at the moment as the software isn't released yet.
I'm sure this will change very soon, but for the moment you have to live with it.
As far as I know there are only nVidia and Adaptec drivers, maybe a few more, but there is very little hardware that has Win-64 drivers if they are not included with Win-64.
Be patient, they will all come when the platform is released by Microsoft.
Im afraid I side with the original poster, you are offering for sale the skeleton for a 64 bit system; or get off the bloody pot. By which I mean, If you plan to offer a 64 bit product, support it. MSI have disappointed me with their failure to release regular bios updates or allow access to beta level drivers/bios for those who have a genuine interest in pushing the boundaries. Why should we be patient when we have shelled out good cash for a motherboard upon which to run a 64bit platform.
Though, admittedly, responsibility for driver release falls with the manufacturer of the chipsets, not the motherboard and the original posters critiscism was best directed to VIA or Promise.
Personally, I use linux; so except for ATI and Atheron failing to support 64bit; I have a complete 64bit system functioning well without need for binary driver support. My only gripe is MSI's unfathomable tardiness in keeping up with BIOS upgrades for their 64bit products.
Failure to provide drivers for an OS which is already in late beta (as That Crud From Redmond(tm) 64bit is) testing constitutes a fumble of herculean proportions.
3 months ago, I was an MSI zealot; swearing by their products; however, watching *ALL* other 64bit via chipset mobo manufactures eclipse them with bios support, documentation and drivers, I am getting more and more keen to ditch the k8tneo and write it off as a bad idea. I am consistently frustrated by the technical support departments ignorance of the Athlon64 erratum, their poor email responsiveness and general lack of support for amd64 architecture.
Perhaps I need to take a deep breath and start working on stabilising a different system...
err!
jak

HT201250 I had files stored on a hard drive that were not on my Mac. I used the hard drive for my first Time Machine back up, but it was not enough hard drive space to finish. Now those stored files are gone. Is there any way I can recover them?

I had files stored on a hard drive that were not on my Mac. I used the hard drive for my first Time Machine back up, but it was not enough hard drive space to finish. Now those stored files are gone. Is there any way I can recover them? No, they were not part of previous Time Machine backups, and I have checked both the hard drive the documents were lost on and the new one that I now use for backups. Any suggestions would be helpful, as the lost files are old pictures that are gone forever. :[ Thanks!

1. Yes, if both drives are formatted as Mac OS Extended (Journaled).
2. Reformat the drives if needed, open the Time Machine pane of System Preferences, and remove the drive with the pictures from the list of items set to be excluded.
(110331)

Using slower SATA drives for FRA and archivelogs

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