Pros and cons to JBOD/N-RAID setup on MacBook Pro with two internal SSDs
First, to clarify, in this case, I mean the term "JBOD/N-RAID" to refer to a concatenated or spanning set of drives as supported by OS X and Disk Utility.
I've got an original Apple-installed 120GB 3G (3Gb/s) SSD which I'll be moving into the optical bay using an OWC "Data Doubler" and swapping a new 240GB OWC Mercury Electra 6G (6Gb/s) SSD into the main drive bay.
My goal is to avoid having two separate volumes.
Understand that a RAID 0 array would essentially only perform as well as the slowest drive in the array (the 3G SSD in this case), if it would even work at all given the two drives are not identical in make and capacity.
I've read that a JBOD/N-RAID array isn't subject to the "same make and capacity" constraints. But how does this setup perform?
Would the speed of the 6G be hobbled, slowed down to the 3G's speed (or worse?), if I were to set up the two SSDs as a JBOD/N-RAID array?
Is this even a recommended idea - that is, paying for the convenience of having one virtual volume by adding the complexity (and risks?) of a JBOD / N-RAID setup?
I am following your advice and attempting to install Bonjour. I wasn't sure where to install it so I am following the VMWare Knowledge Base #1003814: Sharing a printer with a Windows virtual machine using Apple Bonjour.
I have copied it below to refer to because I've run into a problem.
I have completed steps 1 a-d.
The Problem: Step 1 e. Click Printers. Printers is not shown under Removable Devices. When I try to Add Device (Printers) it says "New Devices cannot be added until the Virtual Machine is Shut Down and then Resumed." I have shut down the Virtual Machine alone, I've shut down AMware Fusion and I've shut down both Windows and Mac. Nothing has changed when I try and add Printers so I can do Step e.
I sure hope someone can help.
To configure a printer connected to your Mac for use with the Bonjour utility and a virtual machine in Fusion:
Configure your virtual machine for Bridged Networking and disable ThinPrint:
Click Virtual Machine > Settings.
Click Network (Adapter).
Enable Bridged Mode. In Fusion 5.x, select Autodetect under Bridge networking.
Click Show All.
Click Printers.
Set printer sharing to Off.
Click Close.
Reboot the virtual machine.
Install Bonjour for Windows. Download and install Bonjour for Windows in the virtual machine. Bonjour is available from Apple at http://support.apple.com/kb/DL999.
Note: The preceding link was correct as of January 20, 2010. If you find the link is broken, provide feedback and a VMware employee will update the link.
Share the printer in Mac OS:
Open System Preferences.
Click Print and Fax.
Select the printer you want to share, and select Share this printer.
To configure the printer in the guest operating system with the Bonjour Utility:
Double-click the Bonjour Printer Wizard.
Click Next.
Under Shared printers select the printer you want to use.
Click Next.
Click Finish.
Similar Messages
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I am about to buy a 13" MacBook Pro with 256 GB SSD. I want a Windows partition set up. What size should it be, and can I load Win XP Pro or does it need to be Win 7 or 8?
You can use XP but it has to be in a Virtual Machine and OS X as the host instead of as a dual boot system with XP in its own partition. That is how I run Windows on my Mac, in a Virtual Machine.
Take a look at VritualBox from Oracle. It's free and works very well. -
hi.at first sorry for my bad english language.i have mac book pro with two os(win7 and mac10.9.3)when i want to restore my iPad air in mac os iTunes error 17 but in win7 easily restore!why?
Hi there saharalirezaie,
You may find the troubleshooting steps in the article below helpful.
Resolve specific iTunes update and restore errors
http://support.apple.com/kb/ts3694
Resolve communication issues
Related errors: 17, 1004, 1013, 1638, 3014, 3194, 3000, 3002, 3004, 3013, 3014, 3015, 3194, or 3200. These alerts refer to gs.apple.com, say "There was a problem downloading the software," or say the "device isn't eligible for the requested build."
Check the hosts file or TCP/IP filtering, which might cause communication issues between iTunes, ports, and servers.
-Griff W. -
I have a Mac Pro tower (OSX version 10.6.3) with two internal Hard Drives, each one 2TB.
I purchased a 3TB Time Capsule. But cannot back up because it tells me there is not enough space.
I have more than 3Tbs to store to the new TC.
Can I daisy chain two TCs to store the 4TBs?
How can I back up only the internal HD that is already full, without backing up the other one?
How can I do back up using Time Machine to back up the 3.5Tbs?
Do I need to purchase another external HD (that is not TC) to be able to back up all of my photos?Can I daisy chain two TCs to store the 4TBs?
No, you cannot link to produce a single large partition.
But you can have two separate backup jobs.. and use each partition. That is hard on TM but you can easily get a different backup software for it.
How can I back up only the internal HD that is already full, without backing up the other one?
In TM you do a different setup and exclude the other drive.
But it is better to use an alternative software IMHO.
How can I do back up using Time Machine to back up the 3.5Tbs?
You would need to use a network drive of more than 4TB .. it would also take forever. This is just wrong way to do it. Although you can buy a NAS that will work with Time Machine and load it with disks 16TB is possible.. if you can get a second mortgage.. the fragile nature of TM on 3rd party devices.. would leave me in cold sweat if anything went wrong.
TM is excellent at keeping incremental backups of files that keep changing.. as such you should use TM to backup your OS disk and main user directory.. exclude all files and directories that never change. Back them up separately.
Do I need to purchase another external HD (that is not TC) to be able to back up all of my photos?
Yes, that is a much better idea. You want to store photos safely and you want to store them in multiple places. If you have multiple TB of photos, dedicate a couple of disks to the backup. ie have at least two copies.. not in backup format.. in straight copy format if possible.. so you can keep one of the disks offsite.
I would be using your MacPro internal disk access, to place the disk onto sata bus and do the copy disk to disk direct. Or even buy esata card.. or sata to esata converter cable so you can use esata box. That will beat any other transfer speed except thunderbolt for which you would need third mortgage. (The MORT in mortgage is significant).
The great jurist Sir Edward Coke, who lived from 1552 to 1634, has explained why the term mortgage comes from the Old French words mort, "dead," and gage, "pledge." It seemed to him that it had to do with the doubtfulness of whether or not the mortgagor will pay the debt. -
Can you setup handoff to work with two mac computers on the same network?
I am attempting to setup handoff to work with two computers on the same network. I cannot seem to get it to work. Should I be able to?
I'm not sure but I haven't seen anything on the Apple site that indicates that it would not work. The following troubleshooting documents may help: Get help using Continuity with iOS 8 and OS X Yosemite - Apple Support
Note in particular the Mac models supported. The other thing that occurs to me is that in addition to being on the same network they would have to be within Bluetooth range of each other. -
How to make TRIM in 10.6.8 work for Aug 2009 macbook pro with 120 GB SSD?
Just installed 10.6.8 on a August 2009 Macbook Pro with 120 GB SSD (which is Apple installed memory), and TRIM is not enabled. When I installed 10.6.8 on an August 2010 Macbook Pro with 500 GB SSD (Apple installed), the TRIM became enabled without me doing anything else. Is there some procedure I should use to enable TRIM on the August 2009 unit? Thank you for your advice. Carl
but there's no proof that such hacking is either safe or beneficial to performance
Not my take on this at all. My Air for example struggled with write fatigue something chronic - after filling it up the drive performance was down to about 40% on benchmarking, and in the real world felt a lot slower than it was. Enabling TRIM and then erasing free-space resulted in it benchmarking back to where it was at new, and the real performance being back to how I remembered it.
The Sandforce controller enabled Vertex 2E - I don't know if it's made a world of difference to that as I don't remember that unit suffering with write fatigue particularly.
The Crucial M225 struggled with write fatigue, and again TRIM sorted it out - and still has.
All the above perf tests/comparisons etc. are all on my blog if you want to have a look see. -
Mac Pro with two graphic card each one with two dvi output, can I extend deskop to three outputs?
Mac Pro with two graphic card each one with two dvi output, can I extend deskop to three outputs?
MAC OS 10.7.4 3.2GHz Quad-Core Intel Xeon processors, 12GB of 800MHz DDR2 and 2 ATI Radeon HD 2600 XT 256MB (two dual-link DVI ports) . The problem is, I woul like to use one output as main and the three others as secondary or extended desktop but the system don't allow me use two diferent video cards this way.
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I got a new computer and now iTunes is telling me it can't sync with two computers
I got a new computer and now iTunes is telling me it can't sync with two computers, it's telling me it will erase what's on my iPad and re-sync. Will I lose my iPad data that's on it?
No - not at all. Look at that one app that I gave you the link for. That is supposed to transfer all of the iPad content to the new computer. I have no idea how much it costs, but it's worth a look. There are other out there as well. Google "apps to transfer iPad content to computer" or something to that effect. These apps claim to transfer everything.
Several things to remember - you can still transfer all of the iTunesicon tent that you purchased by using the Transfer Purchases option in iTunes. Just remember to turn off auto syncing before you do it. You will also have to authorize your new computer to transfer the purchase if you haven't done so already. From the iTunes menu on your computer go to Store> Authorize this computer.
Plus any apps or music that you have bought can be downloaded again at no charge with the cloud feature in the latest iPad iOS.
EDIT - I see that you did transfer the purchases. Look at one of those apps that I described and they should be able to get you set up. You should also invest in an external hardrive for backing up all of your computer content ... don't want this to happen again!
Message was edited by: Demo -
13" MacBook Pro with Retina 256gb SSD and 16gb ram?
So I have decided to go with a 13" MacBook Pro with Retina.
I am now deciding on how to customize it...
My uses are:
Primary -> Writing. I am an aspiring writer/ future published author, and this unit will serve as a primary storage unit for on-the-go writing. The SSD will help in this capacity, tremendously, as well as battery life, as inspiration to write can happen anywhere. I found he typability to be easier on the MacBook Pro as well, rather than the Air.
Secondary -> Music, videos, gaming.
Basically, I am aware that the crispness of the rPro is apparent. I am not worried so much by the music, or videos, or even browsing part, as I'm sure its quite speedy.
What I am thinking is the might of the 4gb ram, 128gb SSD storage.
Would it be more worthwhile, since I plan to use this for 5+ years, to go for the little bit extra and get the 8gb ram, 256gb SSD storage unit, for only $200 extra. This seems a minor fee considering the length at which I plan to use and keep this.
That being said, I still play some older games and whatnot, with the possibility of playing World of Warcraft in the future... That being said, and knowing that Macs are not gaming powerhouses (unless you wish to go 15"+), would it be worthwhile to splurge another $200 for the 16GB ram? What major differences would doubling the 8 to 16 do for me and the performance of this MacBook?
Thanks in advance!
NickSince it is not possible to upgrade the RAM after purchase (it is soldered to the logicboard), I would definitely opt for 8GB. The same goes for the SSD- I would opt for double the storage. Though it is possible to upgrade your drive in the future, it comes at the cost of installing it yourself and potentially voiding any Apple warranty.
It would not be worthwhile to spend another 200$ on 16gb of RAM, IMO for your purposes. The lack of a discrete GPU and a duel core processor is what will limit gaming performance. 8GB of RAM is enough, in itself.
Rather than spending an additional $400 dollars, either spend the extra $200 for the 8gb 256GB model, or consider the 15'' entry level model for $700 extra dollars-which would be plently powerful enough for your purposes. -
Install SSD, running macbook pro with two operating system and two hardrive
I am currently running bootcamp with Window 8 and Mountain Lion. I am about to install a 256gb SSD, replacing the optical drive. The partition on my current setup is 125 gb for window 8 and 125 gb for OSX. Since this is the first time I am running a computer with two hardrive and two different operating systems, how should I go by installing (software) my SSD. Should I just make one hardrive run window and the other one run OSX. Is it possible to move the OSX partition to the SSD. Should I just install both window and OSX again on the SSD? What are some other options?
It is possible, use Target Disk Mode How to use and troubleshoot FireWire target disk mode - Apple Support
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Mac Pros extra two internal sata ports broken since Leopard 10.5??
I have a Mac Pro and according to xlr8yourmac.com and the newertech website, there are four sata ports for your hard drives PLUS an additional two more sata ports directly on the motherboard. Through a complicated and difficult disassembly, it is possible to dissect your mac pro and install their cable which they sell for about $30, and get at the rear of your mac pro housing connectors for these two internal sata ports. In short, it's nothing more than an extension cable that fits into a neat housing at the back of the mac pro. You can then plug up to two esata drives into those jacks and they are basically hooked into the macpro motherboard. I ordered this cable and it worked splendidly since 10.4.8 and for 10.4.9 without any issue (that I could tell). I was even able to raid them together etc etc. (edit to be clear I mean I had two Lacie 500Gb drives with esata, firewire 800, 400 and USB 2 on them).
When I installed 10.5 it was all broken!! What a disaster. I can't use these drives on the firewire bus (which by the way they work fine on) because I am already tieing up that with other devices and drives. I need these extra two buses, plus they were **** fast before- I guess it's the same bus as the internal drives get.
I have contacted Lacie - no luck - and also newertech, and did so again today, but so far no luck, and apple, no luck and even submitted a feedback request back when we were on 10.5.1 (just released at that time), and no luck. I hoped 10.5.2 would restore this functionality.
I was told Apple do not normally go out of their way to kill unintended functionality but could this be the case on this occasion?www.xlr8yourmac.com its over my head but...
A Copy of the April 23rd, 2007 news page post is below (in reply to eSATA Extender cables (w/PCI slot bracket) from Newer Tech for use with the 2 unused ports on the Mac Pro motherboard.)
" this may be of some interest for your readers.
From the Intel 631xESB/632xESB I/O Controller Hub data sheet:
"Hot-Plug Operation
Dynamic Hot-Plug (for example, surprise removal) is not supported by the SATA host controller. However, using the PCS register configuration bits and power management flows, a device can be powered down by software, and the port can then be powered off, allowing removal and insertion of a new device. "
(I asked if he knew of any way to do that in OS X.)
the SATA controller does support AHCI mode, which enables hot plugging (same as with the raid southbridges ICH6R - ICH8R which support hot plugging with raid drivers from Intel without Intel assuring this).
But it does not support AHCI if the PATA port is used as in the Mac Pro. And without AHCI there is no way to do hot plugging.
Using a SATA DVD drive may not mean AHCI is used automatically. The controller has to be switched from IDE to AHCI mode. Maybe the Mac Pro does it on startup or some EFI specialist can finds out how to do that.
BTW Tiger can handle an ICH8R in AHCI mode on all SATA ports without a problem.
Kind regards,
Martin S. "
Info/Tips on using Spare SATA Ports with Windows: (from Jan 15th, 2008 news page) This may have come up in the past and I'd forgotten it (don't own a Mac Pro yet) but in reply to a post yesterday (1/15/2008) on the Pioneer SATA Blu-Ray reader/Superdrive combo drive, a reader mentioned the spare SATA ports are not usable in Windows XP at least with the standard drivers with Bootcamp. (Most readers have used the ports in OS X although I've not searched drive db reports for anyone that mentioned using Bootcamp/Windows also. BTW - The spare ports are bootable for OS X use, as noted in this article - although drives are not shown/usable when booted from Windows with standard drivers.)
(Update) Here's a reader mail w/tips on using the spare ports with Windows via a replacement chipset driver install and grub bootloader edit:
" after finding this thread in the onmac forums I finally was able to get my pioneer sata drive to work under bootcamp. Basically you have to do the following:
- Install Win XP and ubuntu linux with a pata dvd drive in XP, change the ide 2680 driver to the intel ahci driver found here (downloadcenter.intel.com) S5000 Based Server AHCI SATA Storage Driver for Windows.
- Boot into ubuntu and change the stage1 file of the grub bootloader to this:
http://www.olofsson.info/grub/stage1
This keeps the mac pro in ahci mode when booting a foreign OS
Now you can boot windows using the linux partition, this will start grub and keep the mac pro in the correct mode
I also installed Refit to make things a little easier but as far as i know using Alt key when booting should work too.
if anyone tries this and has any questions feel free to ask
-Forrest" -
I am a twelve year old boy ready to get my first Mac computer. I already have an iPad 3 and I really like it. Now I'm going to start saving up for a Mac and I am down to two choices, as listed above. I'm going to be using it for web browsing, games, drawing, word documents, presentations, movies, video calling, messages, Windows 8 and I will be using quite a few apps from the Mac App Store.
Also could you tell me how long Apple support the MacBook Air with the latest version of OS X and how long they support the MacBook Pro with the latest OS.
I also want to know if it is worth paying £200 to upgrade a 128GB SSD to a 256GB one.If past history serves, Apple will support the 2013 models for 5-7 years with new OS upgrades but there's no guarantee. However that doesn't mean the computer will be worthless. I have a 10-11 year old Mac serving as a guest computer running an OS two versions old. It still does everything our guests would want to do while they are visiting.
The 128GB drive is the smallest I'd recommend and for a teen (who is likely to collect media and lots of software) I'd call the 256GB a very good idea - especially ince you indicate you want to run Win8 too.
The retina MacBook has a gorgeous display and has a faster processor but all those extra pixels push the GPU to the max. Until faster GPUs come along I'm avoiding the retina computers. -
Why is a laptop designed from ground up to use flash slower then a older laptop with a upgraded SSD from a 3rd party?
My old MBP is more then 2x the speed (read/write) with a SSD upgrade (Samsung 830) then my Air.
Any fixes or mods to boost the flash speed of the Air?We would like you to show us how to do that.......Especially when the Samsung 830 will not fit the Air.....Please don't say duct tape....
Ok, scratch that idea. Let me think for a moment,,,em,,,em. OK I got it. Sell both units and buy a mid Macbook Air 2012 version.
(d-mn I'm good)
__________ All Hail The King _________ -
I am expecting a new iMac (i7 with SSD). How can I transfer only certain applications along with the system, library etc. to this limited (space) HD and other applications to the conventional disk HD in order to save space on the SSD?
Thank you,
GillesTom Lassiter wrote:
I have the same scenario, using an SSD for my start-up drive. I have copied my Applications folder to a mechanical hard drive and created symbolic link to it. The symbolic link resides on the SSD and works properly.
That may not be the best solution. Many updaters expect apps, especially Apple apps, to be in the /Applications folder on the OSX drive; if there are updates, the apps may not be found, thus may not be updated. I don't know if the installers/updaters will follow a symbolic link or not.
DItto some apps, especially Adobe apps, won't even work if they're anywhere else. Again, I don't know if they'll follow a symbolic link, either. -
CS4 and Mac Pro with two graphic cards: OpenGL not supported!
I have two graphic cards in my Mac Pro. If a use a dual display setup where both displays are connected to the same card, Photoshop enables OpenGL support (Preferences > Performance).
Switch both displays to the other card, also works fine.
BUT if I connect one display to the first card and the second display to the second card (so each display has its own graphic card) the Open GL support is greyed out (I can not longer use canvas display rotation for example)
This doesn't make sense to me and looks like a bug...Are you running two of the same cards or are they different? I'm running a pair of NVidia 7300GTs with no issues...and I'm driving a pair of 30" Cinemas and an NEC 26" widescreen. I get better performance on the single 30" than on the card with the two displays. Also note that which PCI slot you are driving the cards in has an impact on their performance...something to look into.
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