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Storage Hardware





Storage devices include any device used for storing and retrieving digital information. Hard disk drives (HDDs) use one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially. The primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs), but HDDs remain the dominant medium for secondary storage due to advantages in price per bit and per-device recording capacity. CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format that allows information to be stored outside the mechanical HDD.

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I just replaced the faulty hard drive  in one of the Bay  for this server and it is still shows orange .it is physical drive replaced

all other bays shows green

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Hi experts.

We're upgrading from Exchange 2010 to 2016 and I already have the design on my head, which will be similar to what we have on 2010, but I'm unsure regarding how many servers will we need to accommodate our mailboxes and run smoothly.

I've tried to use the  Exchange Server Role Requirements Calculator v9.1, but I'm not sure why it keeps giving me so many servers that it can't be right!
The idea is to have enough servers to run smoothly even in the case of 1 of them failing (DAG)
If someone could give me some thoughts on the below, that would be much appreciated.

Six databases, with around 200GB each
Total number of users is 1800, around 300 mailboxes per database
Average size of each mailbox is around 400mb (limit is 3GB) (they're small because we have a third-party archiving solution stubbing messages)
Growth: I don't expect us to grow a lot in mailbox numbers, let's say 25% in the next 2 years. In terms of mailbox size, I would say each mailbox could grow up to 50% in the next 2 years, so, each database would go up to 300GB or 350GB.
Outlook - 80% users will work in Online Mode and 20% in Offline Mode.
Daily email flow - Average of 5000 outbound and 12000 inbound emails. In terms of size, they're mostly small emails with a few kb.
Servers will be virtual machines in VMware.
Hosts servers have CPU Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz (logical processors 32) and no RAM restrictions (can go up to 92GB).

One …
I have a 2TB Apple Time Capsule (Model A1409)

4th Generation

I have a MacBook and when I plug in the drive into a USB cable (w/ TM powered on)

I do not see any icon appear on Finder.

What steps do I follow to:
1) wipe the Time Capsule
2) verify it's been cleared

Last night I used EaseUs to copy one hard drive to another.  There were zero errors on the transfer.  This morning I put the second hard drive in the computer and it started up and immediate started running Startup Repair, which it has now been doing for four hours.  The source hard drive is now dead.  Any tricks to get this resolved?
We have a hard drive that was working but now we get d:/ is not accessible.  Access is denied

It has been a while since we've used a service and I remember it wasn't a good experience although the details escape me and I won't bias people's answers with who the company was.

Could people offer their recommendations on companies that could potentially get data off a 3.5" WD drive from 2009. It is SATA. There's no encryption on it.  And it has been a while since we've used a service. What is the going rate these days along with lead time for the less expensive service?

And am I missing anything while I tried connecting to my computer, it shows a drive letter, disk management says it's NTFS and healthy. But when you click on the drive letter in file explorer it says D:/ is not accessible Access is denied.

I had hopes it was an NTFS permissions issue. I booted RescueCD, a linux product and googled how to mount external hard drives from the command line - I would have thought there's a way from the GUI?

I got the following message:

The disk contains an unclean file system (0,1)
Metadata kept in windows cache, refused to mount
Failed to mount '/dev/sdd1': Operation not permitted
The NTFS partition is in an unsafe state. Please resume and shutdown windows fully......
or mount the volume read only with the ro mount option.

We aren't up on Linux. Is there another product we should be using?
My understand in write-through is that the controller puts the data directly to/from memory where as write-back lets the CPU do it. Is that correct?

   So neither method has anything to do with lost data due to a power outage? Only a cache backup (or a UPS) can save you there?

   So if you spend the bucks on a cache battery backup don't you still have the possibility of losing data that is in the cache of the hard drives?
Got a dell laptop from 2008. it doesn't boot.  Took out the hard drive.  put it in external dock to a win 10 machine.  Made 'unusual' scratching noises and an E and F drive came up. Couldn't browse them.

Crystal Drive info didn't see the root drive.

I put it in the freezer overnight.  

No scratching noice noise now - I can browse the recovery partition.  Windows shows an F partition but can't browse it / click on F and windows says F:\ is not accessible the parameter is incorrect.

Any thoughts short of a clean room type of service?

install it internally to a PC?
Booting in linux?

Crystal Disk info data is attached - takes a few minutes after clicking on the drive to get info

Windows disk manager says F drive is RAW.  E drive (recovery partition) is NTFS Healthy

I guess a partition recovery software.
VIDEO0021.mp4The machine is taking quite a while to start up (15 minutes) and once fully booted it freezes. It has six hard drives but as you can see in the attached video only one of them is actively blinking. Until I rebooted the one that is actively blinking was cycling orange and green indicating a predictive failure.
In general I am not sure what the problem can be. I am able to ping all the virtual servers on the machine but I cannot remote into them or see them on the desktop because it is frozen.

Hoping someone can help in a hurry. Just taken on a server consolidation and found a failed disk this weekend.

I really need this to run production for a few more weeks while we are migrating to new kit. It is out of warranty and I can't quickly find an exact 1TB Enterprise SATA 7.2k drive to replace it with.

I have a 2TB Enterprise SATA 7.2k from a different manufacturer. Can I swap this with the failed disk and have it rebuild onto the new 2TB disk (I realize I lose space but that is not a concern)

Any issues or gotchas I should know about? normally I would prefer to mirror two two of the same (I would gone with a higher raid in the first place...) but if this get me out of trouble it will all go on a new storage array in a while.
During a render computer stopped responding and restarted. The RAID now refuses to mount.  Disk Utility sees it, won't
respond to requests to mount.

Is it possible to recover RAID-0?

External box connecting via USB.
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Seems like every USB I buy is formatted to FAT32 so only 4GB of (Whatever) is available.

When I reformat as NTFS I pick up all of the drive space

But copying into the USB is much slower.

What is the best remedy?
Here's a photo of the inside of my HP EliteBook 8770w:

HP8770w what is next to mSATA
Check out the slot where I put the three red question marks — what's it for? The gold connectors at the top look remarkably similar to the gold connectors at the top of the mSATA slot, but I don't think that the laptop supports two mSATA drives, although I could be wrong about that. Anyone know for sure what that slot is for? Thanks much, Joe
i have an HP probook 450 G0 that does not boot up properly.
when using the different "trick"s like bleeding the charges by holding the power button, it may boot up - and then it works completely normal and fast
this makes me believe there's nothing wrong with the hardware
i was able to install the latest update, for windows and bios, and it "looks" like it's booting up a lot easier - but not Always.

i have tested by removing all devices - cd drive, disk, battery - when it does not  boot - it does not even boot up to bios
Now i have found a post on the net saying it is caused by IRS intel rapid storage, which should make a small partition, for storing the boot files

did anyone come across this problem - and if so - how to repair it ?? i mean - other than replacing the motherboard
fyi - running windows10 home 64 bit on a 500 GB SSD - - 8 GB ram
I have a pc with about 10 vmware vm [pc and server] on it [testing lab] I am looking on a faster hard drive [ssd is not a option] came across 1- SSHD 7200 RPM SATA 6Gb/s 64MB Cache 2- 6GB/s 5400rpm 128 MB Cache which would be a better choice?


First of all let me say that I am new at the PERC.

I have a PowerEdge r720 which currently have 5 900GB hard drive installed.

I've also have an ESXi vers 5.1 and a VMware vSphere Client vers 5.5.

If I'm correct, I have one VD with a total of 1675.50 GB of total storage.  Now sure why it's only reading 1675,50 GB, but I'm sure that can be explained.

However, I want to add two new hard drives and am not sure how to make it available to my VMware Environment.

I've attached a screen print of my current PERC setup.PERC-H710.png
Thanks in advance for all your help.
Hi All,
I recently setup a Dell Precision Tower Workstation with 2 X 4TB conventional hard drives RAID 1 managed by an Avago RAID controller. After 1 week of use, My client is not satisfied with the speed and wants SSDs and willing to pay for 2 x 4TB SSDs.

My thought to change to the SSDs on the Workstation is:
1. Clone the OS using Macrium, Acronis etc to a single 4TB SSD
2. Remove the conventional Hard Drives
3. Install the cloned 4TB SSD and the 2nd blank 4TB SSD
4. Boot the PC and let the RAID rebuild itself

Will this process work? Any foreseeable issues?
Where can I find a good Enterprise Storage Comparison Chart (Hybrid) .  This could include vendors like   HPE 3PAR 8000,  Dell Compellent/SC7020, IBM - Storwize v7000 etc.

Thank you.
I have a Dell server running 2012R2. The server has 4 Virtual disks. The 2 I am asking about are just 0 and 1 which are setup using the same 2 physical hard drives. I did not set this up. The other virtual are 1 raid 10 with 2tb of storage and another raid 1 with 538GB of storage. The user added 2 additional 538GB hard drives which have not been activated yet. They want to expand the storage of the E:\ partition. I am trying to do this in the easiest but best recommended method possible. We will complete a full backup prior to doing anything. Should I create a new partition with the 2 new drives and just attach them via windows to the E:\ Partition? Because of how these 2 physical drives were split up I am not sure how to do this with the least amount of user interruption and/or downtime.

Virtual Disk 0 [ Raid 1] (Contains C:\ partition (80GB) and G:\ Partition (200GB)
 - Physical Disk 0:1:0 (538GB)
 - Physical Disk 0:1:1 (538GB)
Virtual Disk 1 [Raid 1] (Contains E:\ Partition (358GB)
 - Physical Disk 0:1:0 (538GB)
 - Physical Disk 0:1:1 (538GB)

Virtual Disk 2 [ Raid 10] (Contains D:\ parition (2.1TB)

Virtual Disk 3 [ Raid 1]
Hi All -
I am having trouble keeping my connection to an External HDD on my Home network after a while. (Plugged into the main Router via it's USB3 post, not NAS, cannot browse to HDD from Windows or Mac).  I've narrowed the problem down to this: after a while, the LED in the drive is off, and if I unplug/replug it's USB3 cable running from the Router to the Drive, it starts working again. So I suspect that I have a "HDD going into sleep mode" issue.
Does anyone have any advice or solutions for something like this?
I was guessing:
1. Switch to SSD Drive - Do they go to sleep also?
2. Connect HDD to a Computer and not thru a Router connection
3. Spend $$$ and get an NAS
4. I hear there is SW that continually pings a drive to keep it awake. (Sounds a little too much of a bandaid solution for my taste, but whatever works)
5. Different Brand of External HDD?
Some Details:
I have a basic Home Network - Cable Modem into Airport Extreme router into  a TP-Link Managed Switch, and wired/wifi throughout the house, using and  couple of Access Points with same SSID (Airport Express's).
HDD is a LaCie portable 2TB External drive. Just bought it, happy to return it if there is a better drive for this issue.

Thanks in advance for any help!
- B
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Before disposing synology NAS, what is the secure way to secure erase all data?
Hi guys

We have backup types and all Eternal HDD are encrypted using BitLocker, now when I plug in one of the disks I have to login to the host and Unlock it. Is there any script or Method that I can setup to "When I connect one of the External HDD it will Automatilcy Unlock it using the password"  

Please could you help me to figure it out the script?

thank you

I have a server with a asus sabertooth mobo that is giving me a raid critical error. Its saying at boot:

Problemis detected with array: 01 02
Critical status
A disk member of an array has failed or is not responding.

I understand what this is saying but when I go into the raid utility I cant find a way to get it to tell me which drive is failing. Also, it does show in the drive assignment the disk on port 01 is "single disk".

Asus has been no help.
I am trying to troubleshoot a PC issue for a client. I am trying to rule out a problem with the HDD and am trying to boot an UBCD USB drive.

Unfortunately when ever the HDD is connected it will not boot from the USB. If I disconnect the HDD then it will boot from the USB.

I have changed the Boot order to boot from the UEFI device which is the USB drive.

Asus H81M-E Motherboard
sandisk cruzer 4gb
What are the least expensive (but still high quality) hard drives for a Synology DS1815+ Network Attached Storage Device (NAS) that are on this Synology's Hardware Compatibility List (HCL)?
Is this HGST hard drive listed below on the Synology DS 1815+ NAS Hardware Compatibility List (HCL)?


Storage Hardware





Storage devices include any device used for storing and retrieving digital information. Hard disk drives (HDDs) use one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially. The primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs), but HDDs remain the dominant medium for secondary storage due to advantages in price per bit and per-device recording capacity. CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format that allows information to be stored outside the mechanical HDD.