Disk Size Variance

I have two Western Digital Caviar Series hard drives, the 2.0TB and 2.5TB (WD20EARS and WD20EZRX). They're both plugged into a Vantec NexStar dual bay hard drive docking station. When I open Disk Utility under OS 10.8 it shows me both drives, but the sizes are listed as 2.0TB and 2.2TB.
As I understood it, formatting a drive consumed a bit of space, so I can accept that a 2.5TB drive might format down to 2.2TB, but why would that be the case and then the 2.0TB drive actually show 2.0TB of space? As far as I can tell they were partitioned and formatted the same way but it's possible I'm wrong since the 2.0TB drive is older.
If it's not a lot of trouble I wouldn't mind having my 300GB back.

your post prompted me to double check the specs on the dock and you're right, it's only listed as working up to 2TB. serious bummer 'cause I thought this would work with larger drives when I bought it.
Any suggestions on a good dual bay 3.5" SATA dock that supports 4.0TB drives? I was planning to buy a couple soon but it looks like I need a new drive dock first.
I'd love to get one with hardware encryption but they don't appear to exist beyond single bay 3.0TB.

Similar Messages

Disk size in Solaris 10

I have some confusion about disk subsystem in Solaris, i am trying to clarify from this forum.
I have recently installed Solaris 10 in one SPARC box. After i installed, the format gives the bellow output.
0 root wm 19491 - 29648 4.88GB (10158/0/0) 10239264
1 swap wu 0 - 4062 1.95GB (4063/0/0) 4095504
2 backup wm 0 - 29648 14.25GB (29649/0/0) 29886192
From the above output, is the size of my disk is 14 GB ?, or the size of my disk is 14+2+5=21 GB ?
I am trying to learn ZFS, so i want another partition in this disk so that i create ZFS on that partition.
I have gone to single user mode by using CD. I assumed that, from the above "format" command output, i thought i have 21GB of disk size and 14GB of free space. So i created another partition with 14GB. Now the format command gives bellow output.
0 root wm 19491 - 29648 4.88GB (10158/0/0) 10239264
1 swap wu 0 - 4062 1.95GB (4063/0/0) 4095504
2 backup wm 0 - 29648 14.25GB (29649/0/0) 29886192
3 reserved wm 0 - 29127 14.00GB (29128/0/0) 29361024
When i am creating ZFS, it given me a warning that the the partition i have specified is spanned into root partition (first partition), and it mentioned to use "-f" option.
With "-f", it created successfully.
If i assume now that the size of my disk is 14GB only then,
(1) how come two partitions are pointing to the same area in the disk ?
(2) How come two different filesystems are pointing to the same area ?
Please anyone clarify my doubts. Thank you.

Assuming a standard labeled disk it is standrad practice to have section/slice 2 being 'whole disk' for purposes of 'backup'. That would tend to indicate you have a 14GB disk. A prtvtoc /dev/dsk/c?t?d?s2 (change the ?s to the right values) will give a little more on the disk geometry.
In the display from format column 4 is the start cylinder of the partition and column 5 is the end cylinder. From the first set out output it looks like cyclinders 4063 to 19490 are not allocated
In the second set you have created a new slice (section 3) that overlaps both sections 0 and 1 - which is generally considered to be bad!

MS 6147 max memory and disk sizes

For the MS 6147 can anybody confirm the max Hard disk size and max memory.
It will not recognise the 40Gb HD I am trying to fit, and only recognises half of the 256Mb memeory simm I have fitted.
The BIOS version is 1.9 but I think that is a 'special' by Packard Bell. The MSI BIOS download site makes no mention of disk problems rectified right up to V1.8 which is the latest, with the exception of one for the ZX chipset only which addresses EDMA 66 problem.
Anybody got a definitive answer on this?

Supports a maximum memory size of 256MB (8M x 8) or
512MB (16M x 4) registered DIMM only
how many chips on dimm is what counts with older boards
go to drive makers web site get jumper settings to limit it to 32gb and try

Is there a max SATA disk size in OSX 10.4.11 and G4/1.25?

Hello,
I am trying to set up a G4/1.25 (2 gig in memory) as a fileserver with a SATA card and 2 x 3 TB seagate disks. This is the setup:
http://lowendmac.com/ppc/mdd-power-mac-g4-1.25-ghz.html
http://firmtek.com/seritek/seritek-1v4/
http://eshop.macsales.com/item/Seagate/ST3000DM001/
The system is OSX 10.4.11. I am unable to initialize the disks in disk utility. The process starts but then halts and says that it can not continue.
My question is if there is a max disk size in OSX 10.4.11?
Any help greatly appriceated.
Best regards,
Ingolfur Bruun

Hello again,
I tried to work my way around armed with your input and succeeded
By using a FireWire dock I was able to see the disks in 10.4.11. What I did was to partition the disks with ONE partition in Disk Utility and then format with GUID partitioning scheme instead of the Apple Partition Mapping scheme which I had done before. And as I am using a ATA disk as a startup disk it dosen't matter if the 3 TB disks are not bootable. They will only be used for data, not as system disks.
You saved my day! Thanks again.
Best regards,
Ingolfur

MacBook in target disk mode shows incorrect disk size

My 80 GB hard drive in MacBook has gone bad (the filesystem is in inconsistent state). I connected it to an iMac in Target Disk Mode. It shows up (unmounted) but the capacity reported by Disk Utility is 20 GB. Does someone know why is that? Is it due to the corrupt filesystem?
I am afraid that given this situation, if I buy and run DiskWarrior, that too might not be able to see the full disk and fail to repair it. Note that if I boot my MacBook using the Apple CD, the Disk Utility shows the correct disk size.
Thanks.

If you have a disk that is in really, really bad shape to the point that Disk Utility looks at you like a 5 year old that just spilled a glass of apple juice on the kitchen floor, it's time to bring in the big guns.
DiskWarrior.
I love it, I love it. If someone has something bad to say about it, they are lying. If there is a chance that you can get everything back to normal without spending the huge dough to send your drive out to be dismantled in a clean room, DiskWarrior is that chance.
It's worth every single penny.
Let me know if you have other queries.

Re-read disk size in Solaris 10 x86 / VMware

Hi
Using
# uname -a
SunOS host1 5.10 Generic_142910-17 i86pc i386 i86pc
We have a 30G virtual disk, on top of which a UFS filesystem is living, mounted, and used.
The Virtual disk has been resized to 40G.
I know I need to change the fdisk partition size, after which i can change the "format" partition size, then use growfs.
But I don't know how to get S10 to recognise the new size for the disk.
fdisk tells me
Total disk size is 3916 cylinders
Cylinder size is 16065 (512 byte) blocks
Cylinders
Partition   Status
Type
Start   End   Length
=========   ======
============ =====   ===   ======   ===
1
Active
Solaris2
1 3915
3915
100
# prtvtoc -h /dev/dsk/c1t2d0s2
       0      0    00      16065 62846280 62862344   /xxx
       2      5    01          0 62862345 62862344
       8      1    01          0     16065     16064
# df -h /xxx
Filesystem             size   used avail capacity Mounted on
/dev/dsk/c1t2d0s0       30G    29G   498M    99%    /xxx
On Linux I might use partprobe or blockdev --rereadpt but on Solaris?
Cheers
KM

Hello
this document should help, but make a backkup before running it
How to expand a UFS Lun in Solaris 10 (Doc ID 1451858.1)
Regards
Eze

Disk size in ise

Hi
I have a strange problem after instaling licenses in ISE the following information is in a "show tech"
This info is for 1.3 clean install + license.
% WARNING: ISE DISK SIZE NOT LARGE ENOUGH FOR PRODUCTION USE
% RECOMMENDED DISK SIZE: 200 GB, CURRENT DISK SIZE: 0 GB
It is the same in the Eval version but in this server there is a 2500 license
The same is observed in both ISE 1.2.1 and 1.3 (running a POC on ISE)
When trying to upgrade ISE 1.2.1 > 1.3 the following output
Getting bundle to local machine...
md5: ad7d87d383661bce671804a9e125e42b
sha256: 2a7ebe5196e3d956ac42ec2e5acdf3815a3e0f80db954b58e2c68843bb3c42fd
% Please confirm above crypto hash matches what is posted on Cisco download site.
% Continue? Y/N [Y] ? Y
Unbundling Application Package...
Initiating Application Upgrade...
% Warning: Do not use Ctrl-C or close this terminal window until upgrade completes.
-Checking VM for minimum hardware requirements
% Error: At least 100GB sized hard disk required for upgrade.
the disk is
Hard Disk Count(*): 1
Disk 0: Device Name: /dev/sda
Disk 0: Capacity: 644.20 GB
Disk 0: Geometry: 255 heads 63 sectors/track 78325 cylinders
Thanks
Erik Loeth

Attached is the output from VMware, this is made with the OVA
ISE-1.3.0.876-virtual-SNS3495-2.ova
The disk output from show inventory
NAME: "ISE-VM-K9 chassis", DESCR: "ISE-VM-K9 chassis"
PID: ISE-VM-K9 , VID: V01 , SN: XXXXXXXXXXXXXXX
Total RAM Memory: 16467264 kB
CPU Core Count: 4
CPU 0: Model Info: Intel(R) Xeon(R) CPU E7- 4870 @ 2.40GHz
CPU 1: Model Info: Intel(R) Xeon(R) CPU E7- 4870 @ 2.40GHz
CPU 2: Model Info: Intel(R) Xeon(R) CPU E7- 4870 @ 2.40GHz
CPU 3: Model Info: Intel(R) Xeon(R) CPU E7- 4870 @ 2.40GHz
Hard Disk Count(*): 1
Disk 0: Device Name: /dev/sda
Disk 0: Capacity: 644.20 GB
Disk 0: Geometry: 255 heads 63 sectors/track 78325 cylinders
NIC Count: 1
NIC 0: Device Name: eth0
NIC 0: HW Address: XXXXXXXXXXXXXXXXXX
NIC 0: Driver Descr: Intel(R) PRO/1000 Network Driver
(*) Hard Disk Count may be Logical.
Reards
Erik Loeth

How to allocate disk size for each user in iMac?

Hi folks,
I have iMac (Mac OS X, version 10.7.5) for Family, and each of my family member has account on it.
Now, kids download many large files (several GB size files) and HD is getting full.
So, I'd like to set maximum disk size for each user.
Could you prvide instruction how to configure disk size for each user?
Regards,
Hiro

I don't know of any way to do that by user.
I used to partition my HD and that sets a hard limit by partition, but by user? I don't think it can be done.

DV9000 Maximum Hard Disk Size Supported?

I'm searching for a used HP Pavilion DV9000. I need to know the maximum hard disk size the DV9000 series laptops support. To be clear, could I put a 750G or 1TB disk in each bay?
HP's web site isn't helpful. It gives only the "official" numbers at time of release which state it supports up to 240G, 120 in each bay. Those kinds of numbers are almost never an accurate statement of the limitation as I have seen similar "official" numbers for other HP laptops (supposedly limited to 120G or 250G or whatever) that have no problem supporting 640G in the real world.
The size of hard disk a computer supports is usually a function of the main board's chipset and I don't know how to determine the exact chipset or find the chipset's hard disk support capability. Again, HP's web site isn't helpful here either. They may list it has an nVidia chipset; but, they don't mention which nVidia chipset.
To be clear, I don't own a DV9000 yet and I need to know how to find this information maybe with the exact model number. The model series may be DV9000; but, there are dozens of more exacting model numbers on the bottoms of the DV9000 series computers (example: DV9025ea). I don't want to purchase a DV9000 and then find that its limitation really is 120G per bay.

Hard drive size is a limitation of the Bios, not the chipset, this was overcome with the implementation of Large Block Addressing 48bit in modern bios's in 2003
Hp does not state which bios's on older laptops support this or not.
Looking at the production dates of the 9000 series, I would be willing to bet it supports any size hard drive (48bit LBA), since 48bit LBA was introduced in 2003
http://en.wikipedia.org/wiki/Logical_block_addressing
That being said, there could be brand compatibility issues, so be sure to buy the hard drives from a source that has a friendly return policy.
Maybe some one can post that has actually installed a large hard drive in a 9000 series.

Maximum disk size for Z61m?

I want to replace the original 80 MB HDD of my Z61m with a faster and larger one. What't the maximum disk size the controller/BIOS can cope with?
Gurk
Thinkpad Tablet
Thinkpad T431s
ThinkPad Yoga S240 with OneLink Dock
Solved!
Go to Solution.

Any SATA laptop drive will do just fine, be it 160GB or 320GB. You know your needs as well as your budget the best...
Hope this helps.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

Maximum disk size for azure site recovery

Hi everyone,
I am looking into Azure Site Recovery, and I can't seem to find the maximum disk size I would be able to replicate into Azure. I have read some articles saying that 1TB is the maximum size, and some people have said that it is 64TB!! I have a File
Server that I would like to protect which is 4TB in size, and if the limit is 1TB I think it is very limiting...
Any help would be greatly appreciated.
Many Thanks.
Robert Milner | MCITP: Virtualization Administrator | Website: http://www.remilner.co.uk | Twitter: @robm82

Hello Robert,
The current size limits for a VM replicating to Azure are :
For an OS VHD (the vhd that has the OS Installation) : 127 GB
For a Data VHD (<1 TB)
Is the size of your file server running on a single 4 TB volume?
Anoop KV
Hi Anoop,
Our File Server is currently running on a single 4TB volume. Do I have any options with regards to replicating this VM to Azure using Site Recovery?
Many thanks.
Robert Milner | MCITP: Virtualization Administrator | Website: http://www.remilner.co.uk | Twitter: @robm82

How to get the disk size

Hi, everyone, does anyone know how to get the size of the disk, say hard disk? In the Writing Device Driver it says that the block device driver must create an 'nblocks' property for each minor block device. I want to get the size of the block device in another driver. Is there any DDI/DKI kernel function for this?
How to get the same thing in a user mode application? Is there any API to do this?
Thank you very much.

I just found a function in include/sys/conf.h. The prototype is:
extern int bdev_size(dev_t);
Can I use this function to get the disk size of the device dev_t? I couldn't find the documentation of this function.
Thanks

How to determine physical disk size on solaris

I would like to know whether there is a simple method available for determining physical hard disk sizes on Sun sparc machines. On HP based machines it is simple:
1. run "ioscan -fnC disk" - to find all disk devices and there raw device target address ie /dev/rdsk/c0t2d2
2. run "diskinfo /dev/rdsk/c0t2d2" - display the attributes of the physical disk including size in Kbyes.
This simple process allows me create simple scripts that I can use to automate collation of audit data for a large number of HP machines.
On Sun based machines I've looked at the prtvtoc, format, and devinfo commands and have had no joy. Methods and suggestion will be well appriciated.

ok,
format should say .....eg
type format ..
AVAILABLE DISK SELECTIONS:
0. c0t0d0 <SUN2.1G cyl 2733 alt 2 hd 19 sec 80>
if this is not a Sun disk, and you do not get the info,
select the required disk and select partition and then print. This will display what you need.
hope this helps

Maximum disk size?

That's the maximum disk size or volume size supported? Thanks for any insights.

The maximum volume size, and file size, in Mac OS X 10.4 or later, is close to 8 EB (exabyte, or 10**18 bytes). The actual number is 2**63 - 2**31.
See Mac OS X: Mac OS Extended format (HFS Plus) volume and file limits

New JEPG image size (disk size) is too low?

Hi,
I am creating new JEPG image using JAI. But the resultant JEPG's size (disk size) is too less than the source image.
How to create a new JEPG with the size equals to the source image?
I guess some where in middle the compression is taking place. How to avoid it?
Thnaks in advance.

post some code ... with code tags
as just reading a jpeg image using JAI and rewriting it back doesn't involve re-compression ... doing something wrong some place.
   File imageFile = new File(filename);
                try {
                Iterator readers = ImageIO.getImageReadersByFormatName("jpeg2000");
                ImageReader imageReader = (ImageReader)readers.next();
                ImageInputStream imageInputStream = ImageIO.createImageInputStream(imageFile);
                imageReader.setInput(imageInputStream, true);
                ImageReadParam imageReadParam = imageReader.getDefaultReadParam();
                int imageIndex = 0;
                Rectangle rectangle = new Rectangle(0, 0,(int)pan2.getWidth(), (int)pan2.getHeight());
                //Rectangle rectangle = new Rectangle(0, 0,1000, 1000);
                imageReadParam.setSourceRegion(rectangle);
                image2 = imageReader.read(imageIndex, imageReadParam);this to read a image
Iterator writers = ImageIO.getImageWritersByFormatName("jpg");
                         ImageWriter writer = (ImageWriter) writers.next();
                         Once an ImageWriter has been obtained, its destination must be set to an ImageOutputStream:
                         File f = new File(x+".jpg");
                                        try
                         ImageOutputStream ios = ImageIO.createImageOutputStream(f);
                         writer.setOutput(ios);
                                        writer.write(im[x]);
                         ios.close();and this to write the image back on the disk

Disk Size Variance

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