RAID-5 with internal disks

I'm currently installing a E250 with 6 internal disks of each 18gb. I created a /, /usr, /var and swap each mirrored using Disksuite.Then I would like to create a RAID-5 filesystem with Disksuite, so therefore I created 1 extra slice on every disk with the same size and created the RAID-5 metadevice with
metainit -r c0t0d0s3 ....
What should be the best interlace size ? Write performance is not very good (as I expected), so does anyone have good ideas how to make improvements ?
Please reply to me personally at [email protected]
Thanks,
Bruno

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Non-Apple RAID card with internal drives possible on 2009 model ?

Hello there,
I have decided against the Apple Raid card, since it does not support any other drives than the ones sold through the Apple Store and it also only supports up to 1 TB drives.
My goal is to have 3x 1.5 TB drives in a RAID 5 array.
Does anybody know any hardware Raid 5 capable adapters, that can be used with internal 1.5 TB drives & the early 2009 Mac Pro model ?
Cheers,
Martin

Once upon a time, in a land far far away, ATTO and LSI, and Adaptec mainly owned the storage market for Mac controllers, and even then in those happy times we heard there was Voodoo in the land, and a curse on what were the Rules of SCSI Voodoo, and one had to be careful that a drive really was certified and tested, and one had to insure which firmware version one was talking about, not just any which firmware - and controllers also had to be updated as well.
Signal processing over SCSI with good active termination, cable length, and 160 pins (and cable strands) (and no noise or crosstalk, good insulation).
If one did all of the above, and was careful, you were rewarded with a working storage controller and array and the best possible performance at the time.
And sometimes you could venture off the reservation... a little, and some drivers could patch and work around bugs in firmware or other problems - just as bugs in cpu, boot firmware, and microcode can be patched by the OS kernel. And people would pay for retail drivers, or they would have to rely on the vendor's bundled driver (that may only work on their own drives and no others).
Hard Disk Toolkit, Silverlining and others made name for themselves, amoung others that now have faded into oblivion for most.
But it still exists when you venture beyond consumer and pro-consumer devices and venture to use FC-SCSI, SCSI, and SAS. And taking a chance when you try to use off the shelf SATA storage products and solutions. There are times when OEM drives really are OEM-only and a good thing; and times to avoid.
And there is no list of any kind of successfully used non-Apple drives, though there is word-of-mouth of a few that definitely need to be avoided.

Raid 0 With Internal And External Different Size Drives??

So I want to setup a raid 0 with my computer setup but have some questions.
I have 3 external drives, 500GB, 2TB, and 1TB.
Can I partition the 2TB and 1TB and use the 500GB partition I make on each drive for the raid, so all 3 are 500GB?
Can I also partiton my 1TB internal hard drive in half and use the new partition in the Raid?
Am I going about the best way to set this up or will this not even work in the first place?
Thanks for any info and helping!!

So basically I setup my iMacs drive and my external 1TB drive as a raid 1 and it will write the data to both drives at the same time right?
Correct.
Will this slow anything down at all?
Yes.
I gave up on TM myself.
Get carbon copy cloner to make an exact copy of your old HD to the New one...
http://www.bombich.com/software/ccc.html
Or SuperDuper...
http://www.shirt-pocket.com/SuperDuper/
Or the most expensive one & my favorite, Tri-Backup...
http://www.tri-edre.com/english/tribackup.html

Permissions problem with internal disk

Thank you in advance for this, you will be saving me 3 years of student design projects.
I own a Mac Pro and installed an extra 350 gig WD internal HD. It has worked great for a few months but recently I think I messed it up by clicking "ignore ownership on this volume". When I booted up my computer again it was gone! I was worried sick that the drive had gone bad but when running disk utility it shows up just fine and needed no repairs or anything else, but nowhere can I find a way to make it accessible to me again.
Everything from my first three years of being a design student is on that drive. It would mean the world if I can find a way to restore it! Please help me out!
Nick

Right… do this…
1) Open NetInfo Manager (Utilities folder) and select "Enable Root User" from the Security menu
2) Authenticate when asked and supply a password when asked being EXTREMELY careful to use a password you'll remember as this, unlike other passwords, is not recoverable or resettable
3) Log out and you should now find an "Other…" option in the list of users
4) Select other and log in as root with the password you set in NetInfo Manager
5) Once logged in you should find the drive mounted

Replace Disk RAID 5 with hot spare disk form old disk

i'm going to replace a failed disk form server Proliant SL360 G5 and using RAID 5 with a disk has been used from older server.
my question is there any side effect in RAID 5 on server that has been replace from a failed disk with the old disk?

Hello @Oktandri,
I understand that you are replacing a failed disc on your Proliant Servier and are wondering if there are any side effects that you should be aware of. I am sorry, but to get your issue more exposure, I would suggest posting it in the commercial forums, since this is a commercial product. You can do this at HP Enterprise Business Community - Servers.
I hope this helps. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

MacPro 5,1 - 6 Hard Drives (with internal Superdrive)

I'm throwing this out there because I searched for a long time for an EASY way to set up 6 hard drives in the MacPro case. This is how I did it. I'll throw some comments in at the end for anyone interested and also what I would have liked to have done differently. (there aren't any pictures, but I'll put up links to what I used)
Parts List:
2.5 inch Sata II hard drive - Western Digital 160GB (Scorpio Black)
3.5 inch Sata II hard drive - Western Digital 2 TB (Caviar Black)
Optical Bay Mount - OWC Multi Mount - http://eshop.macsales.com/item/OWC/MM352A52MP9/
Sata II Internal RAID PCIe Card - Vantec - http://www.amazon.com/gp/product/B004QY7M9I/ref=oh_details_o01_s00_i00
Sata power splitter - StarTech - http://www.amazon.com/StarTech-com-PYO2SATA-Power-Splitter-Adapter/dp/B002N2EHVQ
7pin Sata data extension cable - http://www.ebay.com/itm/120999365424?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m143 9.l2649
1m 7pin Sata female to female cable - http://www.ebay.com/itm/221046259401?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m143 9.l2649
Setup:
1. Pull your optical bay sled and install your two drives using your chosen mount.
2. Install your PCIe RAID card with internal Sata II ports.
3. Remove the power supply cable cover (I think that's what it's called; it's the plate immediately behind the optical bay sled, comes out with two screws)
4. If you have a hard drive installed in Bay 1, remove it from the case and out of your way.
5. Run your 1m Sata data female to female cable from your RAID card, under the top-most portion of your PCIe fan (do not remove the fan), and follow the bundled cables up through the divider, and in front of the optical bay doors.
6. Replace the power supply cable cover, being careful to route the Sata cable along with the other cables, and re-secure cover.
7. Connect Sata data splitter to Mac lower Sata connector. You will have to do minor fabrication to the splitter to allow it to fit.
8. Connect the 7pin Sata data extension cable to Mac lower Sata connector. You will have to do more minor fabrication to the splitter to allow it to fit.
9. Carefully replace your optical bay sled and begin connecting cables. You should connect your superdrive to the Mac upper Sata connector first. You should then connect the power splitter to both drives. Then connect your Sata data cables to both drives. You may have to adjust the position of the optical bay sled to adequately connect all cables.
10. Replace anything you removed (like your Bay 1 hard drive), and close up your tower.
11. If needed, install drivers for your PCIe card.
12. That's it, you're done. Take note that if your RAID card does not have boot capability, you will only get boot functionality out of the drive that you connected using the data extension cable. The drive you connected to the RAID card will only have boot capability if your card supports it.
My present computer:
MacPro 5,1 - Quad core Xeon 2.8GHz
Hard drive 1, 2 - 64GB Striped RAID for Scratch Disk
Hard drive 1, 2 - 900GB Unused (trying to convert at least half to a Windows XP drive, but that's another issue)
Hard drive 3, 4 - 2TB Striped RAID for Main Data
Hard drive lower - 160GB 2.5 inch Boot Drive
Hard drive external (PCIe) - 2TB Time Machine
Not including hard drives, we're talking about $60. I wasn't sure if this combination of items was going to work out, so I wanted to keep the dollar total low.
In retrospect, if I'm being totally honest, I should have just done what everyone said and used an external drive for time machine (or whatever 6th hard drive I wanted). Here's why: My RAID card doesn't have boot functionality, which I didn't think would matter. I planned on using the drive connected to the RAID card for my Time Machine. Everything works great, except I can't boot from my homemade OSX USB recovery drive and use Time Machine for a restore. This is because the RAID card drivers aren't on it. I could probably make a workaround, but I will just use my external clone if I ever need to do a full restore. Had I used an external FireWire 800 enclosure in the first place, I wouldn't have had to worry about it.
Notes about cables:
Don't buy the cheapest ones you can find on eBay. After fabricating my data extension cable, the L-shaped portion that the connectors lay on broke off inside my Mac's connector. I threaded the connectors back in, but for now, the two are married with electrical tape. Not very pretty, and a big reason why I didn't take the system apart to make pictures for the guide.
Know what lengths you need. I kind of guessed about lengths. The data extension cable should preferably be the same length as the power splitter. Unfortunately my power splitter was a little long, and my data extension cable was a little short. This created the need to bend them excessively so that I could cram them into the little space that was left. This caused my above issue in which one of the connectors broke.
OWC MultiMount:
This is what started my quest in the first place. This product existed, so clearly there must be an answer for how to do it. You can fit two drives in the lower bay, so you should do it, right? I love OWC, but this mount is pretty junky. It works, but it's not OEM styled. The material they use (which they say is aluminum) is very flimsy. I had to bend it back into position in several places to make the brackets line up. There's no sound from the bracket while the machine is running, which is good. But I was surprised at how seemingly low quality this mount was. I would have been much happier with a machined aluminum mount with rubber grommets like the stock hard drive sleds.
A word about which mount you get: You will be much happier if you mount 2 2.5-inch drives in the lower bay (at least in a vertical configuration). You'll have more space to work with, and other than price, there's no reason to stick a 3.5-inch drive in there (unless you're cheap like me).
When all is said and done, I'm happy that I got 6 Hard drives crammed into my case. I'll never (hopefully) outgrow my system. I have 2TB of data storage (which I doubt I'll surpass). I've got a boot disk that's plenty large, I've got a scratch disk that's super fast, and I've even got some additional high-speed hard drive space I'll hopefully get a Windows partition onto. The better option though, would be to put one hard drive in that bay. Skip all the add-ons, and get an external FireWire 800 enclosure. Dedicate one port on the rear of the tower to it, and stash it out of sight. It's exactly the same but easier to remove.
Feel free to ask any questions. I'll do my best to answer them.

Have you checked this site? They are out of stock at the moment, but more should arrive soon:
http://store.apple.com/au/browse/home/specialdeals/mac

RAID with 10Krpm disks

We are planning to buy an Xserve. Our network admin have some concerns about Xraid because of its 7200rpm disks. We are using IBM servers with 10krpm disks, so he say we can not downgrade our standards. I understand that our IBM server use SCSI disks and Xraid SATA disks. The questions are:
1. How both RAID systems compare? Is a 7200rpm-SATA slower than a 10Krpm-SCSI?
2. What other RAID, besides Xraid, can I use with Xserve? I'm looking for a system with 14 to 16 disks with a total of 3TB<4TB
3. What about Rorke Galaxy 65 RAID. Anyone is using one with an Xserve?
Thank you for your help.<br>
PowerMac G5 2GHz Mac OS X (10.4.4)

The ONLY possible time that the 10K drives would be
better is if you're running a database that is doing
lots of small I/Os. In that case, the 10K drives are
better, because they can do higher peak IOPS. So I
can only say with 95% certainty that your network guy
is being unreasonable
You're correct that 10k ( or even better, 15k rpm ) drives can do higher peak I/Os per second. But database apps are not the only ones to benefit from this. Mail servers, compile servers, and home directory servers are some that spring to mind.
Having said that, its not the RPM if the drive that matters. The problem with these types of application is that they tend to perform random i/o over the disk and therefore average seek times are very important. Shorter seek times are directly related to faster spindle speeds.
The biggest benefit however is indirect. 10k and 15k drives are designed server use, and as such they perform much better under heavy load than drives intended for single-user loads. The reason for this that almost all 10k and 15k drives use SCSI or Fibre Channel interfaces.
Note the independent performance benchmarks of the WD Raptor 10k SATA drive. While nominally similar to 10k SCSI specs, it falls short under heavy multi-user load.
http://www.storagereview.com/articles/200601/WD1500ADFD_6.html
Thats why Apple's Xserve RAID performs badly when doing lots of small I/Os.
Its internal ATA drives are slow at random I/O, even though when paralleled up as they are in the XRaid, they exhibit a high bandwidth. Its not bandwidth that counts for these apps.
Hey Steve, we need to buy a storage device with 15k drives in it. Will you build us one, or do we have to give our dollars to another vendor?
Cheers, Dave.

I changed permission setting on main disk...took forever now when I bootup I get the chime...apple icon...fan noise...thats it...internal drive is broken...no Mac install disk..I have a windows XP desktop with installation disk..if I was to get external d

I changed permission setting on main disk...took forever now when I bootup I get the chime...apple icon...fan noise...thats it...internal drive is broken...no Mac install disk..I have a windows XP desktop with installation disk..if I was to get external drive ...could I use windows XP styartup disk just to boot the "17"Powerbook-G4...have no intention of downloading XP on the Mac...just want to boot it up...or is there a way to boot the Mac from the XP desktop...cables...etc?

Hi Romko23, just pasted info from manual...PowerBook G4 "17" 5.3
Your PowerBook comes with a minimum of 512 megabytes (MB) of 533
MHz Double Data Rate (DDR2) Synchronous Dynamic Random-Access Memory
(SDRAM) installed. Both memory slots can accept an SDRAM module that meets the
following specifications:
Â Double Data Rate Small Outline Dual Inline Memory Module (DDR SO-DIMM) format
Â 1.25 inch or smaller
Â 512 MB or 1 gigabyte (GB)
Â 200-pin
Â PC2-4200 DDR2 533 MHz Type RAM
PS my keyboad is loose...I tighten the tiny screws...only...once ...tried all the key-strokes...Comand-option..P-R.....safe-mode... etc...Mac only reacted ...once...right after.. I tightend K-board >>C-OpT- P-R...mac chimed twice...the Apple icon in grey screen got smaller....now after trying ...keyboard .boot short cuts 10 times..nothing...it chimes ...grey screen....apple in window...fan noice ....thats it...do you think I need to tighten screws...again,
I actually think when I was changing permissions...on entire it was taking so ong...20 min...I just hit power,,shut it down...when it wasn't done...no patience.,...just thought of something ...sounds important...whern I resgisted on this site..I tried to use my Powrbook login name ..got message.... .. blocked...Secury problem....that has to be the problem..blocked..how do I unblock?
Message was edited by: CMK1

This disk doesn't contain an EFI system partition. If you want to start up your computer with this disk or include it in a RAID set, back up your data and partition this disk.

As stated above. I get this when I try to resize my HD. Was having issues with BootCamp so I removed it and got this.
This disk doesn’t contain an EFI system partition. If you want to start up your computer with this disk or include it in a RAID set, back up your data and partition this disk.

the same problem...
any help?

Time Capsule Slow WLAN to internal disk with internet data transfers

All,
I've been experiencing slow responses from my Time Capsule since I got it. It is one of the newer models with dual band and I have a Macbook Pro and a Macbook connecting to the 802.11n network.
I use the internal disk of the Time Capsule as a NAS and I don't use it for Time Machine backups. It houses software, pictures and music files.
When I'm downloading files from the internet via Safari, or via Transmission (torrents) the wifi throughput of the WLAN slows down from about 5 megabytes per second to just a couple of hundred kilobytes per second.
For my tests I used a 2.2Gb DMG file (a Garageband Jampack) which was housed on the Time Capsule disk.
With Transmission running and downloading two torrents and seeding two torrents (capped upload of 2 kilobytes per second), the transfer of the file from the Time Capsule was 4 hours. I let it run a few hours just to determine that the ETA in Finder was fairly accurate.
With Transmission stopped, the transfer of the same file took 9 minutes.
With Transmission stopped but with Safari downloading a large file (400mb), the local Time Capsule file download to my Mac was again looking at around 4 hours.
It also impacts file uploads to the Time Capsule disk but no where near as badly as with downloads. According to activity monitor, throughput from the Time Capsule disk to my Mac over Wifi is around 200 kilobytes per seconds, writing to the Time Capsule was around 900 kilobytes per second.
Both upload and download speed increases dramatically when no internet based file transfers are taking place.
Now the odd thing. I have a TVIX 6500a media player attached to the Time Capsule via gigabit ethernet. In all the tests I've performed (using the same DMG file) the data transfer rate, both reading and writing to the TVIX has always been solid at nearly 5 megabytes per second.
It is almost like the Time Capsule prefers internet originated traffic over WLAN traffic to its own internal disk, and really throttles this traffic. And it lets traffic originating from other devices on the network through on all cylinders.
I know technically a Time Capsule is designed for Time Machine however I can't see how it would be a viable solution given the bad data rates when downloads are taking place.
Is there any way to get under the hood of a Time Capsule to make some adjustments? I wonder if anyone else has had any experience with this, and what might happen if I plug in a USB disk and use that instead. It is starting to look like I might have to get a decent NAS to connect to the Time Capsule but then it is just a larger heavier Airport Extreme.
Thanks in advance.

Mikecad1 -
I dont have any assistance to offer, but have experienced similar problems.
When trying to offload all my music from an external drive to a Time Capsule, it was estimating WEEKS to do it. Even with the HD connected right to the Time Capsule. It's like the WLAN wanted all traffic to go out then come back in before being written.
My solution in that case was to disconnect my laptop from the WLAN, with the drive hooked up to it via USB and then Cat5 to the Time Capsule and do a direct transfer like that. 2 hours instead of weeks.

I have a camcorder (JVC Everio with hard disk internal drive) and it records file as MOD. When I dowload thru I movie it ceates a .mov file. What is best and easiest way just to convert to MPEG filesZ?

I have a camcorder (JVC Everio with hard disk internal drive) and it records file as MOD. When I dowload thru I movie it ceates a .mov file. What is best and easiest way just to convert to MPEG files?

I have a camcorder (JVC Everio with hard disk internal drive) and it records file as MOD. When I dowload thru I movie it ceates a .mov file. What is best and easiest way just to convert to MPEG files?

Mac Mini will not read dvd data disk ie osx install disk with internal drive but will read dvd movies

As title said , cant get internal drive to read data dvd's havent tried cd's. I also tried to use an external drive with no luck with any disks. system info shows the drive though. So i guess i have 2 issues. any ideas will help thank you

If the drive can read a movie DVD then the problem must be that the OS DVD is either dirty or badly scratched. Look at the shiny side. If it has finger prints clean it with a lint free cloth. If it has scratches you can call Apple for a replacement disc for a nominal charge.

Installing Maverick on a MacPro with OS 10.7.5 and using RAID 1 with 2 * 1TB disks. 50% used.

I have a MacPro with 2* 1TB disks running Mac OS 10.7.5 using a RAID card running RAID 1. 50% space used.
How can I install Maverick safely (i have a Time Machine Backup). The install will not use the RAID set as a boot volume.
Reading the RAID manual there is discribed a way to create a bootabkle partition and RAID 5. But it starts out as a newly purchased configuration.
I have a used configuration. I would like to reuse the data.
Is there an installation section for my type of configuration?
THKS for all help.
Regards
Reint

I have found the answer myself already.
1.     Take a full backup on a medium which also will restore.
2.     Start your system with original start-up DVD.
3.     Start RAID pgm. Dissolve your current RAID set.
4.     Create a new RAID set with a logical volume on it.
5.     Restore from your backup your current system.
6.     Install Maverick on this system.

RAID it with 1 or 2 disk

Hi all!
I´ve a Macbook Pro with 2 LACIE D2 500 Gb e-SATAII connected with a Sonnet Tempo SATA ExpressCard/34 eSATA II.
Can you guys help me with this:
If i buy a LaCie 2big Dual (2-disk RAID) eSATA II 3Gbits & Hi-Speed USB 2.0 1TB is it possible to have the same speed and rate transfer (?) is it faster to work with a RAID with 2 disk (individual) or a RAID with the same 2 disk but only connecting via one eSATA II cable (?)
In the end i think it´s the same (or not!) but only with one power suply (LaCie 2big Dual)
Can you guys help me?
Thank you!
HBars

+Will you have more speed / streams if i use a single cable connected to a box with two disks in RAID, or i get it from a two separated ones with RAID via software - RAID via software or via hardware?+
Hbars,
First off you are only editing HDV and DV material, which have roughly the same data transfer (3.1x -3.5 MB/s), even a FW 400 drive could give you some decent performance.
Should you find yourself in need to edit uncompressed SD then all the drives I suggested will serve you well.
The answer is that you will indeed be able to edit on the fly (fast enough) with the drives I suggested and with a single cable with no problems while editing those formats (for uncompressed SD eSATA would be best and if you can I would always recommend that) and yes I would trust more a tested and reliable RAID drive rather then the one you want to experiment with Lacie drives (I'm not a fan of Lacie drives, sorry).
I haven't used the Fusion F2 so far but from what I know it appears to be an interesting bus-powered drive.
Once again, for the kind of formats you are working with you are safe with just a single cabled drive mentioned above.
G.

Can I create a raid drive with disk utility

I recently bought a 2TB seat gate external drive.
I want to use this drive with time machieve as well as set it up as a raid drive to strode photos.
Is this possible to do with disk utility?

Hello
you can not make any kind on RAID type with only one hard drive you need at least tow drive to perform a RAID volume
then , hard drive utility can be use to perform software raid ( Level 0 an Level 1 only )
for more info about RAID technologie http://en.wikipedia.org/wiki/RAID
Pierre

RAID-5 with internal disks

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