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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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Hello EE,

I am working on a network drive migration task and all has been going well with this command which will copy source to the destination and keep all the permissions\ACLs intact and gives me a nice log file to review the results. This command does not mess up anything on the source but will mirror it to the destination which is what I want for time being:

robocopy "\source-server\share\folder" "\destination-server\share\folder" /zb /MT:32 /mir /copyall /dcopy:T /V /tee /LOG+:C:\temp\robocopylog.txt /r:0 /w:0

All is well :-) Until I realize that I have tiny window for the final copy before full cutover to the new storage.

Problem: command above is taking close to 31 hours to run for 9TB of data and my cutover time frame is only about 12 hours. I re-run the command every 48 hours to check for changes to the data on source to update the destination and it appears there are millions of small files which are slowing down the copy.

All the data is there just want to keep the destination up to date with new robocopy command and slim down the time without jeopardizing the data or permissions\ACLs.

I have narrowed down a couple folders I could exclude from these subsequent copies to shave down the 31 hours to roughly 9 hours by reviewing the data.

I have been trying out the /XD switch and cannot get it to work.

Here is a example of the /XD added to the command;

robocopy "\source-server\share\folder" "\destination-server\share\folder" /XD …
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I recently created a 14TB logical volume on my md3200i and mapped it to a Windows 2012 server via iSCSI..  It's still initializing on the md3200i...  I went ahead used the iSCSI initiator in Windows to connect to it..   I created a logical drive D: in Windows and started to copy data to it.  Well..  Drive D: disappeared during the file copy..  I looked in the event logs and as expected a network iSCSI error occurred..  Below are the logs..  Now..  I have two portals that I connect to but multipath is not enabled.  I wouldn't think that would matter..  But.. It seems it lost connection to the iSCSI target.  I was able to re-connect.. Any ideas?

Error      1/17/2018 2:38:55 PM      iScsiPrt      20      None

Log Name:      System
Source:        iScsiPrt
Date:          1/17/2018 2:38:55 PM
Event ID:      20
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      VEEAMHost1.domain.com
Connection to the target was lost. The initiator will attempt to retry the connection.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
    <Provider Name="iScsiPrt" />
    <EventID Qualifiers="49152">20</EventID>
    <TimeCreated SystemTime="2018-01-17T20:38:55.756325100Z" />
    <Security />
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
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

everytime i connect a windows 10 drive to a windows 7 system - as second drive - it starts  running chkdsk
this happens also when i connect a windows 7 drive to a windows 10 system as second drive
of course - it NEVER finds an error - but it takes a lot of time
why is this? can i stop that behaviour ?  if so - tell me how please !
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?
We have an HP ProLiant ML350 Gen9 E5-2620v3 Server using a Smart Array P440ar controller. Smart storage administrator shows the Logical Drive 1 is queued for rebuilding, this is a RAID 1 array.
We can find no reports of a problem with either of the hard drives, our managements system does not show any evidence of faulty drives.
This is a 2012 R2 server, has anyone seen this? And if so what did you do to correct it?

Thanks All!
Hello, I am trying to find a software or vendor that can assist me. I need to be able to have a audit summery of harddrive folder and files with drive serial numbers, ect and certified that i was destroyed for record keeping. I have tried WinDirStat , Book Nuke, no luck. Does anyone have any experience working in IT of lawyer offices, government, fiance, ect that know a way to produce this type of custom report ?
NEW Veeam Agent for Microsoft Windows
NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

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?
As a technician in some cases I need to access a hard drive externally, so I am looking for a USB Hard Drive Docking Station. there is lot of them on the market but looking for one that has the best capabilities of reading (even troubled hard drives to the best possible), also Dual-Bay with Offline Clone [reliable]. and if available (not sure if there is) from a larger size drive to a smaller size [as long the date is less than the target drive].

Any recommendations from experience?
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.

I am planning to upgrade to Ryzen and wanted to have a low cost but reliable motherboard brand like ASUS.

My requirement is I need to connect five 3.5 inch desktop SATA hard drives and one Internal SATA Blu Ray Writer.

Does AM4 ASUS PRIME B350-PLUS Motherboard support six 6 gbps/sec SATA devices?

Please reply asap whether I can connect five SATA desktop hard disks and one SATA blu ray DVD writer using the AM4 ASUS PRIME B350-PLUS Motherboard?

Thanks for your support.

Warm Regards,
Mr. Sriram. K

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.
my hdd shows up in my bios and device manger, but not in disk management so i cant get it to work. The hdd i have is Seagate Baracuda 2TB Drive. I have tried changing the cabels attached to motherboard and power supply and it still doesn't work
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?
Configuration Guide and Best Practices
Configuration Guide and Best Practices

Read the guide to learn how to orchestrate Data ONTAP, create application-consistent backups and enable fast recovery from NetApp storage snapshots. Version 9.5 also contains performance and scalability enhancements to meet the needs of the largest enterprise environments.

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
Forget it that they're failed, but why are the RAID and Mirror volumes here also displayed under Disk 0 and Disk 1 in the attached? the RAID volume E is also seen in both disks while the mirrored volume G is in Disk1 with both Volume E: and F: Can someone explain the scenario please?
I wanted to know what or if a samsung 960 evo or pro would work inside my macbook pro late 2013 edition?
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.

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.