Raid Storage Device

Hello all,
I have been having some performance issues with a raid enclosure and I�m hoping some here might be able help me out. I had this raid system connected to a Windows 2003 server for a couple of months and had been seeing write speeds at around 160MBps writes and Reads at about 175MBps with the NTFS file system. Last week I moved the raid enclosure over to my SunBlade 150 formatted the drives for UFS, ran some performance numbers and the result were 38 write and 32 read. I at a loss here as to why the difference is so huge any suggestions?
Thanks In Advance
P.s.
Pertinent info:
Windows 2003
900 MHz
1 GB ram
QLogic HBA: 2340
Solaris 9
500 MHz
1 GB ram
QLogic HBA: 2340
Both go through a Brocade switch.

Hey may I know what particular perfomance test software your using?

Similar Messages

What USB storage devices have a block size of 512 bytes?

After pulling my hair out for weeks trying to get a usb hard drive to work with my new AirPort Extreme (802.11n), I ran across this
http://docs.info.apple.com/article.html?artnum=305038
AirPort Extreme (802.11n): USB storage device supported formats and protocols
You can connect USB-based storage devices to an AirPort Extreme (802.11n). Learn which formats and protocols are supported.
The AirPort Extreme (802.11n) supports USB storage devices that have a block size of 512 bytes, and are formatted as Mac OS Extended (HFS-plus), FAT16, or FAT32. Not all USB storage devices use a block size of 512 bytes.
The AirPort Extreme (802.11n) shares storage devices based on the format used to initialize the storage device. For example, if HFS-plus formatting was used, AFP and SMB/CIFS protocols are used to share the device on the network. If FAT16 or FAT32 was used, SMB/CIFS protocols are used.
The AirPort Extreme (802.11n) works with disks that have a single partition and are not software RAID volumes (no more than one volume per physical disk). If the disk is a self-contained RAID that presents itself to a computer as a single volume requiring no software support, then it is supported.
Note: Use AirPort Disk Utility to discover and mount AirPort Extreme-based volumes over the network.
Now, this information is not easily obtainable while
shopping for a new usb hard drive. How do I find out which
ones support this 512 byte block size????
Would have bee nice to know that not all usb hard drives
are supported by the AirPort Extreme (802.11n) before I
purchased it.
Thanks
J Riley

Duane posted a link to an unofficial 802.11n Airport Extreme Hard Drive Compatibility List.
http://www.ifelix.co.uk/tech/8014.html
Still not enough information to make an informed purchase that
will work.

Latest Initrd not recognising USB storage devices?

Just installed 2.6.30 with all the necessary files. Everything seemed fine, except for one thing: my external USB hard drive is no longer recognised on boot. Here is my fstab and my mkinitcpio.conf.
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs rw,noexec,nosuid 0 0
#/dev/cdrom /media/cd auto ro,user,noauto,unhide 0 0
#/dev/dvd /media/dvd auto ro,user,noauto,unhide 0 0
#/dev/fd0 /media/fl auto user,noauto 0 0
UUID=139cf76d-425a-4c40-a5b1-bbbf22533d9a /boot ext4 defaults 0 1
UUID=4eddd177-23f6-49ab-a8ad-d3e1303133e0 / ext4 defaults 0 1
UUID=ED83-B8D4 /media/flash vfat rw,user,noauto 0 0
#UUID=ac46c6ae-d9eb-47d4-809b-19a2484b3133 /iomega ext4 rw,noexec,nosuid 0 1
UUID=ac46c6ae-d9eb-47d4-809b-19a2484b3133 /media/iomega ext4 rw,user,noauto 0 0
UUID=da9e741f-3525-47c6-8c7f-edf1ded00e7a swap swap defaults 0 0
As you can see from this, I originally had my external usb drive mounted on /iomega @ boot. However, since that no longer works, I have changed it to /media/iomega and let HAL mount it automatically when I fire up GNOME (the same way I have my flash drive set up). I used the original line with 2.6.29 with no problems.
The strange thing is, the device is there, because, when it fails, I go into single user mode, remount / read-write and then run mount -a and the device appears with no errors. If I change the line so it doesn't do an fsck on boot, it doesn't mount the device, but I do get an error saying the device is not there. I can then mount it manually at the command prompt.
The device is shown in /etc/blkid.tab and in /dev/disk/by-uuid.
# vim:set ft=sh
# MODULES
# The following modules are loaded before any boot hooks are
# run. Advanced users may wish to specify all system modules
# in this array. For instance:
# MODULES="piix ide_disk reiserfs"
MODULES=""
# BINARIES
# This setting includes, into the CPIO image, and additional
# binaries a given user may wish. This is run first, so may
# be used to override the actual binaries used in a given hook.
# (Existing files are NOT overwritten is already added)
# BINARIES are dependancy parsed, so you may safely ignore libraries
BINARIES=""
# FILES
# This setting is similar to BINARIES above, however, files are added
# as-is and are not parsed in anyway. This is useful for config files.
# Some users may wish to include modprobe.conf for custom module options,
# like so:
# FILES="/etc/modprobe.conf"
FILES=""
# HOOKS
# This is the most important setting in this file. The HOOKS control the
# modules and scripts added to the image, and what happens at boot time.
# Order is important, and it is recommended that you do not change the
# order in which HOOKS are added. Run 'mkinitcpio -H <hook name>' for
# help on a given hook.
# 'base' is _required_ unless you know precisely what you are doing.
# 'udev' is _required_ in order to automatically load modules
# 'modload' may be used in place of 'udev', but is not recommended
# 'filesystems' is _required_ unless you specify your fs modules in MODULES
# Examples:
# This setup specifies all modules in the MODULES setting above.
# No raid, lvm2, or encrypted root is needed.
# HOOKS="base"
# This setup will autodetect all modules for your system and should
# work as a sane default
# HOOKS="base udev autodetect pata scsi sata filesystems"
# This is identical to the above, except the old ide subsystem is
# used for IDE devices instead of the new pata subsystem.
# HOOKS="base udev autodetect ide scsi sata filesystems"
# This setup will generate a 'full' image which supports most systems.
# No autodetection is done.
# HOOKS="base udev pata scsi sata usb filesystems"
# This setup assembles an pata raid array with an encrypted root FS.
# Note: See 'mkinitcpio -H raid' for more information on raid devices.
# HOOKS="base udev pata raid encrypt filesystems"
# This setup loads an lvm2 volume group on a usb device.
# HOOKS="base udev usb lvm2 filesystems"
HOOKS="base udev autodetect pata scsi sata usb keymap filesystems"
# COMPRESSION
# Use this to compress the initramfs image. With kernels earlier than
# 2.6.30, only gzip is supported, which is also the default. Newer kernels
# support gzip, bzip2 and lzma.
#COMPRESSION="gzip"
#COMPRESSION="bzip2"
#COMPRESSION="lzma"
This is essentially the same as I had it in 2.6.29. I did initially use LZMA, since that gives slightly faster compression & decompression, but changed it back in case it was a timing issue (and rebuilt initrd). No joy. I also tried usbdelay=10 on boot, but again no difference.
This isn't exactly a "show-stopper", since the device functions normally otherwise and everything else is fine, but it is annoying. I would much rather have this device available automatically on boot, so that it gets checked when the max mount count comes up.

This was the bug update I received today:
FS#15282 - [mkinitcpio] Latest initrd not recognising usb storage devices?
User who did this - Thomas Bächler (brain0)
You can never rely on external hard drives to show up "in time".
The difference was that adding the "usb" hook to mkinitcpio used to add a 6 second delay on boot by default, this doesn't happen anymore. I think external drives simply don't belong in fstab, because there's too many possible race conditions. If you insist, you can try to force the usb storage driver to scan for devices sooner after detection, see the delay_use parameter to the usb-storage module.
You're going to have to modify the delay_use parameter to get it to work. Be prepared for race conditions, though. I didn't bother myself as it wasn't a show stopper for me, so I've advised that it can be closed as a non-bug.
ETA: usbdelay=10 doesn't work as that flag is apparently no longer recognised for some reason.
ETTA: I've always used UUID in the fstab because udev can remap devices on boot (I've had fstab not recognising devices because of this).
In case some people don't know, to see what the uuid for a device is, use the following:
sudo tune2fs -l <device-name>
Last edited by jamesbannon (2009-06-28 18:30:23)

MSI Workstation Notebook - Storage Device Information (updated on Apr 23rd 2015)

MSI Notebooks Interface of Storage Device:
http://www.msi.com/faq/nb-1117.html
[Tutorial] How to install SSD and recover the pre-installed system to SSD on MSI Notebooks:
https://www.youtube.com/watch?v=bVfh632LFbs
Please Note:
1. MSI suggests to ask our local service center for a storage device’s approval list before your upgrade in order to avoid any compatibility issues.
2. For having the maximum performance of the SSD, see the suggested Stripe Size shown in the "RAID 0" column to do the set up.
3. All damages are your own responsibility and will void your system’s warranty. Make sure to use the proper technique for the upgrade. If you’re not familiar with MSI notebooks, we suggest you contact the local service center and let our professional technicians help you with the upgrade.

Quote from: Ruudt;109594
In attached pictures you will find the storage information of the current and previous Gaming Notebooks.
I hope this helps the people who want to upgrade their notebook's storage config:
[ATTACH=CONFIG]6722[/ATTACH]
[ATTACH=CONFIG]6723[/ATTACH]
Please Note:
Any damage caused by improper usage during or after upgrading is not covered by MSI's global warranty.
If you are not sure how to upgrade, always contact a shop to do it for you. They will probably charge you for the service but they might also offer warranty on the upgrade parts and upgrade service.
This is a very useful post. Thank you so much for the guide. I know this will help lots of members who want to upgrade their notebook.

Beige G3 Lives On - As a Media Server or Network Storage Device

I love my first mac and just can't let it go.
I have an ol' G3 266 has become my basement machine and I have been trying to figure out what to do with it, when I came to the idea that it could be made into two things that would be very useful:
- A media server for music and video connecting to my TV with Apple TV or something similar
- A Network storage device used as file server and backup system for my Powerbook, as well as a VPN.
I believe I can achieve all this my my 10 yr old machine, but I would like to get your thoughts on what would be needed to accomplish this. Here is what I was thinking:
- Several large SATA drives
- RAID controller card
- DVD Drive (currently have one installed)
- Mac OS 10.3.9 or higher (Currently running 10.4.8 with XPostFacto)
Anything else? What about processor speed and RAM?
Could be a fun project!

Did some further research...
- Need to add at least a 100BaseT Ethernet card or higher. The Beige G3 has a 10BaseT, which is too limiting for streaming of data. You can get a better PCI Ethernet card cheaply, but does anyone know if there is one that would replace the slot used by the 10BaseT card instead of using one of the three PCI slots?
- Due to a limited number of PCI slots, internal RAID is probably out of the question. I have to have a new ethernet card, an USB/Firewire card, a graphics card and a host controller, which is one too many cards. OSX seems to require that I have my ATI Radeon 7000 card to use any monitor, so I guess I can't get rid of it, even if I try to run it without a monitor. If the Ethernet card fills a PCI slot, that only leaves one open, which a Sonnet Tempo Trio could fill. This is a combined host adapter and firewire/USB2 card, so this could give me a faster bus and access to more drives, as well as several I/O ports.
Any other ideas?

Time Capsule vs. Other Mass Storage Device

I am a Mac newby seeking advice. I recently purchased the MBA below to replace my personal PC. My previous setup was a desktop with plenty of storage to handle my needs (including iTunes) and I backed up data directly to an external hard drive (I know pretty basic).
After purchasing the MBA, I realized I do not have enough internal hard drive space to store all of my music and my current external drive is too small for all the media and backup of the MBA. Also, the point of the MBA is to be mobile. Also, I would like my Sonos music system (with an application similar to iTunes) to be able to access the music library. Lastly, I have far to many songs purchase outside of iTunes to use iTunes Match. Therefore, I started seeking wireless alternatives to store my music and backup my MBA. Although an NAS would probably be ideal, I have found out through trial and error that the basic systems do not work with a MAC and the only ones with a prayer are the more expensive ones (i.e. Synology and QNAPS). Therefore, I have decided to pursue a more simplified approach.
My Internet and TV provider is CenturyLink. Their router is very basic with only 802.11g speed and without any USB ports. The following configuration has been suggested to my by some more experienced Apple users to provide wireless data access and backup.
Requesting CenturyLink provide me with a basic modem.
Purchasing an Airport Extreme (or similar wireless n router with a USB port).
Connecting the Airport Extreme (or other wireless router) to the basic modem.
Purchasing a Time Capsule (or other mass storage device).
Partitioning it using either the specific one for the Time Capsule (or Disk Utility for other mass storage devices) to provide one volume for my media and one for backup using Time Machine.
Moving the media from my old external drive (which is catalogued with folders for each artist, subfolders for each album and the songs in the subfolders) by connecting the old mass storage device and Time Machine to my MBA and using Finder to do this (see the questions below regarding this).
Moving/cataloging the media from the Time Capsule (or other mass storage device) by dragging it into the iTunes window.
Connecting the Time Capsule (or other mass storage device) to the USB port of the Airport Extreme (or other wireless router).
Setting up Time Machine to use the volume partitioned for backups.
Possibly having to move cataloging files from my iTunes, Music folder to the external drive and pointing iTunes to the Time Capsule (or other mass storage device) through Preferences, Advanced to access the music.
Overall, I am concerned with the total cost. I just spent a lot of money, not only purchasing the MBA, but also the iPad 3 and upgrading my cell phone to the iPhone 5 (I skipped the 4). It seems that by the time I purchase an Airport Extreme and a Time Capsule, I could also have just bought a NAS like the Synology 213 with 2 X 1TB drives, connect it to the existing wireless router via ethernet connections and have a more comprehensive solution. Based upon these instructions and cost concerns (and bad experience), I have several questions related to this.
Does this configuration and these instructions make sense, including those for moving and accessing my music files through iTunes (i.e. will it work)?
Are both the Airport Extreme and Time Capsule necessary to make this work easily or can I purchase alternatives to either or each and if so, what is recommended? If they are necessary, would you recommend doing this or buying one of the aforementioned NAS's to a Mac newby?
Given the file structure for my music on the old external mass storage drive, can I simply move the folders over with the subfolders containing the musice files in them or do I have to literally enter into each subfolder, select all and move them subfolder by subfolder (i.e. album by album)?
Am I missing something totally better and easier solution?
I would be massively grateful to anyone who can provide some good answers, advice and guidance. I am about to pull my hair out!!!!
Thanks,
WinoSkiBoy

They both said about the same thing except the Apple Store business tech said to buy an Airport Extreme and just attach a partitioned external third party HDD to it.
Except that is flakey for TM backup..
http://pondini.org/TM/Airport.html
And slow as the proverbial dog.. although I guess the dog is old.
And totally inadequate as a media store or server.
Apple's pricing is pretty cunning.. I really doubt you are going to find a cheaper unit to do both wireless and TM backups than the TC. And it is a perfectly good device to do that. It is good to have in the network. And Apple sure make their products work with other apple products.. so it does work better than other similar cost products.. although you miss a lot of features that Apple predecided for you.
But I don't think anyone has the ideal solution to your problem. Apple believe in cloud. And if you have fibre internet that will work really well.. forks out your money and apple will store your stuff. But for the real world most of us do not have internet connection even a fraction of speed required. And it can be another decade before we will. We need a box that is half way between a TC and media PC, a file store and a NAS. Will Apple make one.. ?? I don't think so.. They believe in cloud..
You can make the missing link one yourself. If you are so inclined.. A HP microserver running freeNAS can do TM backups and makes an excellent media store because it can do AFP. You can put a graphics card in it and plug it into your TV. You can use it with a airport extreme. But you will need a degree in Geek.. !! The synology is a preconfigured form of that.. No Geekdom required. Synology seems to have the upper hand.. this week.
Let me make a suggestion.. Figure out if you are going to jump into the Apple way of doing stuff.. which is basically itunes on computer as a server.. and the whole network.. working as part of this.. so any media is pushed from a store in itunes.. whether local or internet.. if you want to do it that way.. getting something other than the air to run itunes is well worth it. That is what a NAS cannot do.. it cannot be a media player.
Or you do hybrid.. ie you don't use put all your media into itunes, you use a bit of this and bit of something else.. As long as that can play files.. stored on NAS or even on the TC without the itunes requirement.. It won't be as pretty. But it isn't hard to get working.. as long as you accept this isn't going to be the perfect Apple solution.

PCI USB Card Does NOT Work With Mass Storage Devices

I have a StarTech PCI card with 6 USB 2.0 ports that I inserted in my 500 MHz (overclocked) B&W Power Mac G3. It works great for any USB device EXCEPT for any hard drive or DVD/CD-RW drive. I checked the system.log file for errors. Nothing shows up in System Profiler or Disk Utility, obviously. Here's what it consistently says:
Dec 16 23:33:28 Geoff-Myers-Power-Mac-G3 kernel[0]: USBF: 674.997 [0xf9c000] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 6 of hub @ location: 0x62000000)
Dec 16 23:33:33 Geoff-Myers-Power-Mac-G3 kernel[0]: USBF: 679.977 [0xf9c000] The IOUSBFamily was not able to enumerate a device.
I'm running the latest version of Mac OS X Tiger 10.4.3. What is wrong? StarTech doesn't have a driver, but nothing should be necessary. Is there a 3rd party USB Mass Storage Device driver that might work better than the Apple generic driver? PLEASE HELP ME! I cannot live with USB 1.1.

Some users have reported problems with certain brand cards and their controller chipsets, so trying a different card may resolve the problem. Keyspan and Macally are often mentioned as being more "Mac-friendly" than some other lessser-known brands or generic cards. Does the card have a mini-power port to supplement the power requirements? With USB 2.0, each port is on a separate bus, so a card with six ports should have one. To minimize the overall draw on the available power, I prefer to install USB cards with as few ports as are needed.

Why do my music files from my storage device not show up on imac 10.4.11 also photos

when i plug in my seagate storage device it has my entire itunes music library which is 15.6 gbs. this music folder along with another music folder and a folder with photos shows up as an empty folder. i know i has music and photos in it because i loaded it into a mac laptop with lion oxs and it showed up. my imac is an old imac with tiger 10.4.11 . any answers. also i have 768 mb of memory can i get another explorer downloaded other than the one it came with which is 5.1.

THANK YOU ! I had posted this question on another topic forum and got zero replies. You have solved my problem. My setting for playlists was 'music only' and I simply changed it to ALL.
THANK YOU ! THANK YOU! THANK YOU!
Now I can go to sleep with theTV sleep timer on and two episodes of Lost in Space or Star Trek or The Mary Tyler Moore show playing as I doze off

I am trying to use my iphone as a storage device to move my music to another computer but it shows up as a camera instead of storage device on my computer. Any ideas?

I am trying to use my iphone as a storage device to move my music library to a new computer. My phone is showing up as a camera instead of as a storage device on my old computer so I can not move my music file to it. Any ideas as to how I prevent this as showing up as a camera/scanner when I connect to my computer?

It's supposed to show up as a camera because it is a camera. Additionally, you won't be able to sync your music from your iphone back to iTunes... media sync is one way... iTunes to the iPhone.
Google TouchCopy to copy the media from your iPhone to your computer.

Managing large iTunes library across multiple storage devices

Greetings,
I'm trying to find a way to manage a very large library of about 1 TB, which obviously won't fit on my MBP hard drive. I want my movies and tv shows on an external drive, but would like my music, podcasts, etc on my internal drive. I would like to ability to see all items when in iTunes, and would like the ability synch any of the items when synching my iPods, iPhone, or iPad.
I know I can go into the preferences and select the advanced tab and deselect the Copy files to iTunes Media folder when adding to library and then put my media on an external storage device.
My question is this... when I download new movie or tv shows from iTunes, where will it put them? Will it put them in my iTunes media folder, or will it put them on the external drive, or someplace else?
Wouldn't it be easier if Apple would allow you to designate where you wanted to put your videos versus or audo content? it just seems so "unintuitive" for a company that prides themselves on being easy to use, and of course, "just working"
Any help would be appreciated.
Thanks in advance... Scott

iTunes hasn't really caught up with Apple's seeming trend towards devices that are smaller and smaller and the glut of media that requires large storage. I guess in the end it might be expected one goes to cloud storage of some sort.
I have never bought anything from iTunes Store but I guess it will still download to someplace indicated in preferences for your media folder location even if you have turned off copy to for other methods of adding media. Two options then. Either make that place your internal drive and move files to the external as you download them, or make it the external drive and work with special handling of music files on the internal. You can override iTunes copying items if you hold down the option key while dragging the item to itunes.

How can i use my ipod touch as a storage device/storing photos

The suggested advice in this support article http://support.apple.com/kb/HT1478 wasn't a help at all, because the option "enable disc use" in the summary window of itunes doesn't appear. I am runnin' the latest itunes version and the latest ipod touch software, by the way.
Secondly, i have some photos on my ipod touch which a friend of mine copied from his macbook pro. Now i would like to copy them on my computer. itunes doesn't offer any option for this.
Does anyone know how to solve this problem?
Thx in advance

very_nice wrote:
The suggested advice in this support article http://support.apple.com/kb/HT1478 wasn't a help at all, because the option "enable disc use" in the summary window of itunes doesn't appear.
*From the article*:
Products Affected
iTunes 7 for Mac, iTunes 7 for Windows, iPod nano, iPod shuffle, iPod mini, iPod, iTunes 8 for >Windows, iTunes 8 for Mac
No mention of the Touch, it works differently from other iPods and has no "disk mode" as such.
I think it can be used as a storage device by using a 3rd party App, search the the App Store for such items.
Photos transferred to your Touch via iTunes will be of severely compromised quality i.e 640x480 pixel resolution and file size around 600-700 kb. These can be retrieved, again using a 3rd party application on your computer, such as [Touch Copy|http://www.wideanglesoftware.com/touchcopy> but you will not get back original quality images.
Good luck,
Dud.

Can i change the storage device for a user on my macbook pro

That basically says it all

It means i want to change the storage device on the computer. I have the drive on the macbook, the one built into it, and i have an external drive. I want to know how i can make the external drive my main source for storage. And if its possible i want it to be for a specific user on the computer

Can anyone recommend an external storage device to supplement my mac book air? I already have a time capsule but want the new device to replicate the data on that so ideally would like a device that i can connect to the time capsule through a cable.

Can anyone recommend an external storage device to supplement my mac book air? I already have a time capsule but want the new device to replicate the data on that so ideally would like a device that i can connect to the time capsule through a cable.

Hi CJR
I'm not sure how Time Capsule can be replicated onto your external drive but there is a USB port on the back of TC that can be hooked up to any recent external drive.
Another thing to think about , besides a Time Capsule failure, is the theft of your Time Capsule, so it might be a good idea to consider separating any redundant back-up from your Time Capsule or both my be stolen.
TC will back up until full and then begin deleting the oldest back-ups. Mine is a 2TB Time capsule.
My back-up plan is as follows:
1. Macbook Air back-up on Time Capsule though Time Machine backs up everything - I think it's about every 30 min or so.
2. Contacts, reminders, appointments, notes, email are backed up through iCloud.
3. iTunes and non-itunes purchased music is on iMatch (and no need to back-up) and any non-iTunes music is backed up on an HP external drive (in case Time Capsule dies)
4. Photos are on my MacBook Air and are backed up on my HP external drive.
5. Office documents (Excel, Powerpoint, Access etc) are stored in a Skydrive app (like iCloud) and Skydrive syncs these docuemnts with the MS cloud and my old PC and does not alter their native format like storing in iCloud would do.
Cheers

I'm trying to transfer music from iTunes on an old PC that uses an external storage device to a new PC (Windows 7) that will use that same external storage device. I am also dealing with new iTunes 11. How do I do this?? What folder does iTunes use?

I'm trying to transfer music from iTunes on an old PC (Windows Vista Home Basic) that uses an external storage device to store the files to a new PC (Windows 7 Starter) that will use that same external storage device. I am also dealing with the new iTunes 11. How can I accomplish this successfully? What folder does iTunes use to store the data in? I've tried several things. Home Sharing caused duplicates but not all songs or apps transfered. It is a large library! I've tried just setting the path in the Advanced Tab of iTunes preferences of the new computer with the external drive connected the same as the path when the external drive is connected to the old computer. This was the best solution so far but still a few artists missing and some apps. Any suggestions?

Here are typical layouts for the iTunes folders:
With iTunes 11 you might also have a Home Videos folder inside iTunes Media.
In the simplest cases you copy the entire iTunes folder from <User's Music> on the source computer to <User's Music> on the target machine, install iTunes, and it "just works"TM.
If the media folder (inside the red outline) has been split out to a separate location then you can copy the library folder (outside the red outline) as before and connect the drive holding the media so that it has exactly the same path as before. If the drive appears as D: on one system and E: on the other then the library won't be able to find the media.
The crucial file is iTunes Library.itl - this contains a record of the tracks that have been added to the library, ratings, play counts, playlists etc.
See also: Make a split library portable.
tt2

Can I use iCloud like a mass storage device - pc free

I am living on a boat and I am using my iPad w a camera connector kit. Can I back up photos that won't all fit on my iPads internal memory(16G), using iCloud like an external hard drive? I don't have a pc w me and don't want one.

With iCloud and photo stream your photos are automatically syced to the cloud, but the photos will only stay in the cloud for 30 days which is enough time by Apple's standards to download them from the cloud to a mac or pc so I guess the answer to your question would be no, you cant use iCloud as a mass storage device.

Raid Storage Device

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