Hardware :: Can External Hard Drives Be Daisy Chained Through USB

Dec 28, 2010

I have two hard drive enclosures: a Macally G-S350SUA, which has Firewire, eSATA, and USB 2.0; and an older Ximeta enclosure which is only USB, which I haven't been using. I have been using the Macally recently but I want to set up a second external hard drive so that I can use the Macally for data. Is it possible to daisy chain two external hard drives through USB, or only through Firewire? The USB plugs on both enclosures are Type B female, so I suppose I'd need a B/B USB cable, which I don't have, so I haven't tried it yet...


Intel Mac :: External Drives Daisy-chained To Time Machine?

Jul 4, 2012

I have two external drives daisy-chained to my iMac for Time Machine,Superduper bootable back-up and a further Superduper back-up of my old Snow Leopard drive. Since upgrading from 10.7.3 to 10.7.4 I get an irritating message each time I awake the computer from sleep that another computer is using my network and the computer name has to be changed. Changing the name as advised in Sharing of System Preferences does not solve the problem. Only disconnecting the external drives makes the warning go away but this is self defeating since I then cannot use Time Machine and/or Superduper.

iMac, Mac OS X (10.7.4)

View 1 Replies View Related

MacBook Pro :: Daisy-chained Bus-powered FW 800 Drives - Enough Power?

Aug 27, 2009

Does anyone have any experience daisy-chaining FW 800 drives on a MBP? I've got one right now, but am thinking of adding another but I don't want to use an AC adapter if I don't need to. Will the MBP give enough juice to run 2 daisy-chained FW 800 drives (2.5")? I've got the late 08 unibody 15".

View 4 Replies View Related

OS X :: Recovering Data From Daisy Chained Firewire External HDD?

Jun 14, 2010

I am looking into all sorts of backup options. Thinking of getting a Lacie 2big 2TB RAID1 (effectively 1TB) firewire external HDD for backup needs. I am not concerned about speed as it is meant for archival purposes only.

Almost ordered one when I found another way to do it is daisy chaining 2 separate 1TB Lacie firewire HDD in RAID1 configuration using Mac disk utility. The advantage being 1> Lacie 2big 2TB HDDs are notorious for being noisy but the Lacie 1TB HDDs are fanless hence super quiet. 2> having two separate DDs+enclosures gives me two independently failing systems for the non-HDD hardware; meaning for the 2big 2TB RAID1 disk if the power supply or the built-in RAID controller card fails then I will have to buy another similar setup to access my data.

My question is in the second senario of daisy chaining 2 X 1TB HDDs in RAID1; If one drive goes kaput will I be still able to mount the healthy drive and retrive my data simply by connecting it to the mac thru firewire? Or, do I need to mirror my data back to a new 1TB before getting access to my data?

Obviously I haven't had the chance to use any RAID setup before, so comments are welcome, or if anyone is using such a setup what could be the other drawbacks that I am not thinking of.

View 2 Replies View Related

OS X :: Daisy Chain Hard Drives - Combo Of USB And Firewire

Feb 1, 2009

My time machine drive conked out this morning, so I need to get a new drive, and I am planning on either a Western Digital MyBook or an OWC of some sort. (Any thoughts?) So here's what I'd like to do. Once I get the backup running again, I'm interested in running a RAID 1 with two external drives. But the catch is this---I have a late model MacBook, so I've only got two USB 2.0 ports. Here's what I'd like to know. Is it possible to chain things together this way: MacBook <--USB-- First HDD <--FW-- Second HDD That is, connect the first drive to the computer via USB (the only option) and the second to the first HDD via firewire.

View 24 Replies View Related

OS X :: How Many Firewire External Hard Drives Can Daisy - Chain?

Jan 17, 2009

After a fiasco with two firewire hard disks (the courier company lost them), I have to purchase an external firewire HD. Once the insurance company refunds my money (which can take up to 90 days), I still want to get the other 2 disks I ordered. Is there a limit on how many firewire drives I can daisy chain? I was thinking on having all 3 hard drives daisy-chained to my iMac.

View 9 Replies View Related

Intel Mac :: Connecting And Daisy Chain External Hard Drives

Apr 5, 2012

Bought the new iMac. I have one La Cie 1-TB external HD from previous Mac that I want to hook up to this new one, plus I want to daisy chain a La Cie 160g HD to that one. What driver do I need, and how do I hook them all up?

View 5 Replies View Related

Intel Mac :: Connecting Multiple Hard Drives Chained By Firewire?

Jul 3, 2012

Can I attach multiple hard drives to my iMac chained by Firewire or do I need a separate port? I now have multiple Western Digital drives and find that sometimes they don't connect to the iMac so I'm wondering if I need a separate port or if my iMac FW port is faulty.

iMac 24", Mac OS X (10.5.6)

View 3 Replies View Related

Intel Mac :: Daisy Chained Firewire 800 LaCie D2 Quadras - Finder Locks Up?

May 7, 2012

Has anyone successfully connected multiple 3TB LaCie d2 Quadra drives using daily chained Firewire 800 to a 2011-model 27" iMac? Has anyone else had process lockups when connecting multiple 3TB LaCie d2 Quadra drives using daisy chained Firewire 800?  How was this problem resolved?New 27" iMac (2,7GHz i5, 2TB internal disk, 8GB RAM, OS Lion 10.7.3)).  I connected two LaCie 3TB d2 Quadra external drives, daisy chained to a single Firewire 800 port.  (Yes, I performed LaCie's software update to the d2 Quadras.)  The finder locks up every day or two; Aperture locks up every few days.  the iMac sometimes doesn't go to sleep as specified in the power saver settings. Emptying a few GB from the trash can take DAYS. Copying a 60 GB Aperture library within the internal hard drive can take many hours.  Forcing a Quit of Finder or Aperture doesn't allow them to be correctly restarted.  The iMac will not shut down from the menu.  It must be powered off by holding power button for 6-10 seconds. VMWare Fusion 4 and MS Office 2010 are the only non-Apple software on this computer.

iMac, Mac OS X (10.7.3)

View 14 Replies View Related

Hardware :: Daisy Chain External Firewire Drives Together?

Jan 13, 2010

My MBP has one firewire 800 port and I have one external firewire drive. I want to get another external firewire drive but since I only have one FW port, does that mean I can only use one drive at a time? There are times when I know I will need to transfer files from one external drive to another. Is there a way to daisy chain external firewire drives together? Also, will daisy chain slow down the file copy process or even slow down my computer?

View 4 Replies View Related

Hardware :: External Hard Drives And USB Vs FW800

Dec 11, 2008

I have been using a MBP for a few months now and I am making a total conversion from PC user to Mac user in January when I buy a nice new 24" iMac but to go with it, I want to buy a couple of new external hard drives. I have currently got a Seagate FreeAgent 500GB USB Drive which is Windows Formatted and I will be keeping that to use with my work laptop (a Dell), and I have been really pleased with its reliability. Anyway, I have been looking around and there are some fab drives on the market but I have a couple of questions. If I get an iMac with a 500GB Internal Hard Drive, how big an External hard drive will I need to use Time Machine without having to delete backups all the time?

Also, I have been primarily looking at the new Seagate FreeAgent drives and the do a PC version (USB) and a Mac version (USB/FW400/FW800), but the 640GB USB version costs �76 whereas the 500GB FW version costs �100. Would you go for the bigger size or the added benefits of FW800? Will I notice much speed difference between USB and FW800?

View 6 Replies View Related

Mac Pro :: Very Slow Transfer Speeds With External Hard Drives Through Firewire And USB?

Nov 30, 2008

My external drives transfer very slowly on my MacPro. I've been searching for answers and have turned up very little.

Just to make a note, I measured my disk speeds with both AJA System Test and copying files between drives and reading the Disk Activity in Activity Monitor.

I have 3 external drives, all MyBook Premium or Professional, 1x 500GB, 1x 1TB and 2x 1TB in RAID 0. I had them on Firewire 400 and the RAID 0 2TB one on Firewire 800. My transfers on FW were all around 24MB/sec on all drives (much less than what I should be getting with FW400). I then read somewhere that the FW bus on the MacPro uses the slowest speed connected for all FW connections. So I unplugged everything but the FW800 Raid 0 drive and my transfer rate jumped to 40-60MB/sec. This is much better, but still about half or so of what I expect it should be producing from an external RAID 0 setup.

To keep my FW800 backup drive faster, I've plugged the other two into USB2.0. The transfer speeds on both drives are now hideous, around 10-15MB/sec. This is so slow, but I'm not sure what to try to fix my speeds.

The HD's in the external drives are all 7200rpm, and all should be transferring at a higher rate. Do you have any suggestions or ideas? Ideally I'd like to get everything transferring at rates they should be transferring at, but I'll settle with my current FW800 speed of 40-60MB/sec if I can get my other two drives transferring at a non-snail pace.

Is this a common issue? I can't believe I'm the only one plugging multiple external hard drives into their Mac Pro. I hope someone has a fix or solution for this. I'm all ears!

System: Mac Pro (early 2008) Mac OS X (10.5.5) 3.2Ghz 8-core - 16GB Ram - 4x1TB SATA - GeForce 8800GT - Dell 30" 3008WFP A02 - Gateway 21" FPD2185W - 3xMyBook external drives

View 8 Replies View Related

Software :: Unable To Read External Hard Drives Via Usb / Lights Turn On With Clicking Sound

Jun 17, 2008

this is the second time i have encountered this problem. when i plug in an external hard drive via USB, the lights go on and i can hear the hard drive clicking a whirring but cannot find it anywhere on my mac. both with hard drives formatted on pc's and macs.

running a G4 Powerbook, power PC 1.67ghz

View 5 Replies View Related

Hardware :: Daisy-Chaining Firewire Drives ?

Dec 2, 2009

I have a real quick question about daisy chaining some firewire drives. I'm looking at buying an OWC Mercury for my macmini. I'm going to connect it via FW800. Can I then daisy chain a FW400 device to the OWC? The drive has 2 FW800 ports but only 1 FW400 so can this be done?

View 4 Replies View Related

Hardware :: USB Flash Drives As External SSD?

Sep 11, 2010

[URL] Though I've never done it myself, I've gleaned that it's possible to partition/raid multiple HDs together to act as 1 HD Might it be possible to do the same to lots of Flash Drives serially linked with USB hubs? 1 USB port -> 1 hub (7 USB ports) -> 7 hubs (49 USB ports) -> 49 hubs (343 USB ports)

USB hubs /can/ be really cheap (given patience, they could probably be acquired for $3 per 7-port hub) If you go to conventions and stuff like that, they literally give away flash drives with the company's info on them. not the largest around, but I've seen 512MB (maybe larger now? that was several years ago) to get 343 ports, you would need 57 hubs ($171) 343 free 512MB flash drives cardboard box 18x18x18" (if each hub is 7x2x1", then 57 would take up 7x19x6") This would be big, but not ungodly so. This would give us 171.5 GB. (343 GB if each drive is 1GB) I'm not sure of the power requirements of these drives - might have to get hubs with own power supplies. anyways - is this possible? would it work how I think? USB 2.0 offers faster data transfer than SSD, but I don't know the speeds of flash drives.

View 3 Replies View Related

Intel Mac :: Usb External Drives Keep Disconnecting?

Mar 4, 2012

when i connect my external hard drive (2 partitions, 1 for timemachine 1 for storage) it keeps disconecting it self unapropriately.

I have the same problem with a couple of usb flash drives. There are no usb hubs involved they are inserted directly in to my mac!

iMac, Mac OS X (10.7.2)

View 2 Replies View Related

Intel Mac :: Will An USB 3 External Hard Drive Work On An USB 2 Computer?

Jun 2, 2012

I am looking to buy an external hard drive for my intel Mac and MacBook Pro to download and save some 8,000 plus photos.  My computers only have USB 2 connections.  I am finding that most new external hard drives have USB 3 connections.  Can I use an external hard drive with a USB 3 connection on my older Mac computers?  If so do I need an adapter to connect USB 3 to USB 2?

View 1 Replies View Related

OS X :: Which Format For External HDD And Usb Pen Drives & Networking

Feb 23, 2009

I have purchased a MBA (love it!), and I am about to sell my Windows desktop. I will be duel-booting OS X and Win 7 on my MBA, and I might add a Mac mini or a self-built Windows box to my network down the road (mostly to serve video and other files). I am getting an Airport Extreme to add to my current wireless G router/DSL modem. The AE will serve as my wireless N access point (N for the MBA, G from the other wifi router for my iPhone), and I will use it to connect my printer and an external 1TB drive. I can't decide whether to built a cheap Windows box to be my file server (and to perform random tasks when the MBA is with me) or to buy some NAS system to serve my files.

My other question is what format do I use for my external drive and a couple of pen drives I use as backup for my documents and pictures. They are currently formatted NTFS, and I realize I cannot modify them from OS X. But Mac formatting isn't visible in Windows without an added program, right? I often have files above the size limit for Fat32. So which format do I chose? One of the pen drives is used for school where I transfer Visual Studio programming files; another is a photo/document backup that I keep in a fireproof safe. Will I just need to keep one pen drive only for my programming classes formatted to NTFS? What do other people do?

View 3 Replies View Related

MacBook Pro :: Daisy Chain USB And FW 800

Jul 25, 2010

This is my first post and I'm after a little help if possible. Have a new i7 Macbook Pro and Im wanting to know if what I am thinking is possible. I have a WD FW800 HD which i have put video and music on, I then have an iomega USB HD which I use for time machine back ups. Can I daisy chain the FW and USB together and if so which way round would it be. In my naieve mind I am thinking the following- Macbook Pro connected to FW HD and then USB (Time Machine HD) connected into the FW HD


Have I got the wrong end of the stick. Essentially I'm asking the USB HD to back up the MBP and the content on the FW HD.

View 20 Replies View Related

IMac :: External Drawer Loading Drives (usb) That Accept The 8cm Disk?

May 18, 2009

Are there any external Drawer loading drives (usb) that accept the 8cm disk as well as the standard DVD disk.

View 1 Replies View Related

Hardware :: FireWire 800 Daisy - Chain Vs USB 2 - Which More Efficient?

Aug 23, 2010

I'm running two of these enclosures: [URL] each with 2x2TB drives in RAID0 (i.e. 4TB per enclosure). I use one 4TB array for my user files, and the other for TimeMachine. My user array is connected via FW800, my question is - is it more efficient to connect the other (TM) array via USB2 or via daisy chained FW800? The enclosures use the Oxford 934DSb chipset, which is capable of saturating the FW bus, so thats 100MBps. As i understand it very few interfaces are capable of saturating a USB2 bus such that practically speaking even FW400 gives greater real-world throughput than USB2, despite the 60Mbps difference in spec.

Since one is a TM volume, when backing up from the user array to the TM array will the data have to pass through the computer's controller? It definitely will if it's FW800 -> USB2, but will it have to if it's daisy chained FW800? I'm told this might not be the case as some FW controllers support P2P communication but i can't find too much info about it. Even if there is P2P support the OS needs to know the progress of file transfers and so forth so can it do this even if the drives are transferring via P2P or can it only monitor that sort of thing if the data goes through it's controller? Essentially is it up to the OS or the controller to select the optimal route for data? If it's up to the OS does Mac OS support FW P2P? That said, even if the data does have to go to the computer from one array and back through the daisy chain to the other array, is it still practically faster than the USB2 route?

View 6 Replies View Related

OS X :: Best External Hard Drives For Macs?

Jan 11, 2011

i am very interested in buying a Mac. But I need an external hard drive for my stuff. What are the best 1TB or higher external hard drives for a Mac Book Pro?

View 4 Replies View Related

OS X :: New External Hard Drives Crashing

Feb 25, 2009

I often use external hard drives to back up my work. Recently I purchased a 1TB Lacie drive. I took a week to build a lovely new file structure for my work. At the end of this week, I began deleting the old files on other hard drives so as to transfer my new neatly structured work back on. In the midst of this, the brand new hard drive crashed, illiciting only the clicking sound of death.

That hard drive, some of my work (a very small amount but still) and a week's worth of sweat and blood was gone in an instant. The person I took it to to look at it mentioned a power surge as being a possible cause for the crash. Anyway, I returned the lacie and bought a 1T Western Digital Mybook (silver). I then began dumping the old back ups onto this.

A week in and this one is crashed too. No clicking sound of death. It calmly sits on my desk with it's unceasing unblinking blue light and refuses to show up in utilities no matter what I do. So I assume it's a goner also. I'll return it also of course. Is something causing these drives to fail...that exists in my walls? Are there power surges causing my drives to die...? OR is it simply a case of bad luck with my choices of new drives?

View 9 Replies View Related

OS X :: External Hard Drives Not Seen By IMac?

Apr 19, 2010

I was done doing various tasks on the iMac and when I decided to plug in the external hard drive for a Time Machine backup, the drive spun, but was never shown on the desktop.I also tried another external drive and had the same thing happen.

After rebooting (hey, this sounds like Windows!), the drive again showed up on the desktop and Time Machine worked fine.Is an external hard drive not showing up on the desktop a somewhat common issue?

View 4 Replies View Related

MacBook Pro :: External Drives - USB Vs FW800 5400 Vs 7200 Rpm - Benchmark Data

Apr 28, 2010

I recently picked up a couple of external drives, and decided to benchmark them to determine whether the interface and/or drive type made much of a difference. For those that don't want to read the details, here's the bottom line: If you're going to splurge on a FW800 interface, it's well worth fitting this with a 7200 rpm drive to maximize performance. Uncached sequential writes over FW800 were twice as fast on the 7200 rpm drive compared to the 5400 rpm. FW800 is a marked improvement over USB 2.0 as well. Full results are below. For background, when shopping for drives, I was interested in using the FW800 interface on the MBPs, for the simple reason it's rated almost twice as fast as USB 2.0. Some of the drives I was shopping for included 7200 rpm drives. My first thought was this was silly, since the interface limited the throughput to far-below the limits a 5400 rpm drive could produce, so why bother upgrading to 7200 rpm? Well, it turns out it does make a difference. I've got both a FW800 enclosure (G Drive Mini) and a USB 2.0 interface (Nexstar TX) as well as a 320GB 7200 rpm drive (Hitachi) and a 640GB 5400 rpm drive (Western Digital). So, I benchmarked both drives using both interfaces. Some interesting results! Turns out, the 7200 rpm drive does in fact dramatically improve performance in the FW800 interface. For sequential operations, Firewire has a dramatic improvement over USB 2.0; for random read/writes, drive speed seems to be a more important factor. And for large files, the combination of Firewire and 7200 rpm gives a pretty impressive throughput of almost 75MB/s. Full results are below. Note that the drive and interface are noted in the title bar for each drive.

View 18 Replies View Related

OS X :: Surely All External Hard Drives Work?

Oct 26, 2010

Having chosen a useful large external hard drive I find it says 'Windows only'. Surely, though the software will not work, all I need to do is format the HD and it will work. The machine is: Seagate FreeAgent 500GB External Hard Drive USB2.0 16MB.

View 1 Replies View Related

OS X :: Sharing External Hard Drives Between 2 Macs

Oct 29, 2006

I am relatively new to Macs, have been using it for 5-6 months. I already know how to do everything but share folders and drives using my network connection. I have an iMac and a Macbook Pro. I have a 120GB Hard Drive hooked up to the iMac via Firewire. How can I share that Firewire External Hard Drive with my Macbook Pro? What are the steps I have to follow to connect both macs? Is there a way that I could also share my iMac's desktop files with my Macbook Pro? I already have a wi-fi connection between both computers, I just don't know how to share that hard drive between both simultaneously..

View 7 Replies View Related

MacBook :: Looking For Compatible External Hard Drives?

Feb 26, 2009

What is the best external hard drive with 1TB for the new Macbooks? I heard a rumor the new Macbooks don't have firewire... is that true?

View 5 Replies View Related

IMac :: External Hard Drives Keep Failing?

Mar 3, 2010

I have a fairly new iMac that I upgraded to Snow Leopard a few months ago. It seemed to me that prior to that my external HD worked fine with Time Machine. Since then it is recognized for a short period of time when I connect it, then it disappears. I replaced it with a WD My Book. It worked perfectly for a month and now it has shut down. Has anybody had run into this before? I can't believe that every hard drive fails within a month in the same mysterious way!

View 7 Replies View Related

OS X :: External Hard Drives And Disk Utility

May 25, 2010

My external hard drive has been corrupted and the error message is telling me to reformat it. However, through all the research I have done to find out how, everything I've found has told me to use Disk Utility to just erase everything on the disk to do this. When I try to do this, it tells me that I can't erase anything because the disk cannot be unnmounted. What should I do?

View 4 Replies View Related

Software :: Startup From External Hard Drives

Jun 30, 2008

Can Mac's be started up from external USB2 drives or is external startup limited to firewire only? I have several machines, IMac (all four flavors) Mac Book and Pro. I want to use Time Machine as the back to all of these devices but I hesitate because of this possible restriction.

View 1 Replies View Related

OS X :: Snow Leopard Keeps Activating External Hard Drives

Oct 14, 2010

Just updated to 10.6 from 10.4, and one of the first things I notice is that it keeps spinning up my three external harddrives at actions that should not set them in use, like starting an application or opening the trash. It seems pretty random, though I'm suspecting it has something to do with mdworker, quicklookd or both. If anyone knows of a solution that doesn't involve unmounting the harddrives, do tell.

View 11 Replies View Related

PowerPC :: Hard To Read / Write To External Drives With G5

Sep 17, 2007

This issue has been killing my work flow for quite awhile. I have a G5 dual 2.0. I can barely read or write files to an external hard drive. Say I try and copy 1.56GB of audio (12 files) from my external drive it will start to copy then stop at 500mb for minutes then start moving as normal and stop again around 900 for minutes.. then again at 1.4. This also happens when writing.

Here is the confusing part. This happens with two external drives (different models) with firewire 400, 800 and USB. I have reinstall OSx. I have repaired permissions and ran repair disc on everything. These hard drives work FLAWLESS with my Macbook Pro as well. Gr what can this be? It takes forever to copy data to or from a drive which is often how I transfer audio between my desktop and laptop. I should soon have Mac Pro money and this crappy G5 can go out the window. I am on 10.4..

View 7 Replies View Related

Mac Pro :: RAID 1 For External Hard Drives?

Feb 2, 2009

I currently have a 2TB WD mirror edition that is setup in RAID 1 so it will mirror all my data. Now I also have a bunch of other drives laying around which I also feel the need to back up and currently I am doing this by doing a whole bunch of dragging and dropping and copying and pasting etc etc etc and this is making me very tired. I know that a setup is possible in disk utility but I am not at all sure about how to configure it so I wont lose any of my data.

Some details about my setup:
Mac OS X 10.5.6
PowerPc G5
Harddrives: two 1TB WD MyBooks, and two 500gig WD Mybooks --> these pairs need to mirror each other and make my life less of a hassle.

View 8 Replies View Related