Storage Hardware




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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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Info on server :
DL 385 G8
Server is running VMware ESXi 6.0
Controller card P420i

We rebuilt 2x600GB SAS drives in a raid 1 to 2x1200GB without any issue.
When trying to expand the disk space on the logical volume it prevents us of doing this or there is no option as it complains there is a 600 GB Hot-spare drive configured to the same array (Array A).
I do not have any option in ACU on removing of Hot-Spare drive, i have the option to erase the drive.
Will an erase of the drive tell it that it is no longer a hot spare drive ?

How can i remove the Hot-Spare drive ? I would like to repurpose it to another Array B as a hot-spare.

Update, i tried to do this from ESX console using hpacucli using command ./hpacucli ctrl slot=0 array A remove spares=2I:2:8
but got Assignable spares not available (see attached screenshot).

Show command on Array A

Best Practices: Disaster Recovery Testing
Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

I am tryiong to backup a Western Digital NAS to 2 external USB hard drives. The NAS is running Windows 2008 Storage essentials.

The drives need to be rotated with a drive being taken offsite on alternate nights.

It also needs to send an email notification on job completion or failure.

I have tried using the built in backup utiity in Windows but it doesnt have email notification. I have tried using task sacheduler to send email when certain criteria are met but it just wont work for me.

Does anyone have any suggestions for a simple, free backup solution that will do these 2 things?

Will a Dell PERC H200E work on a Dell PowerEdge T430? We only need to use the external SAS ports for a Tape machine.  The OS will be Windows 2012
Hi All,

I got the below important VM that cannot be down, during the migration (Exchange server) setup as MBR - NTFS.

it is currently running very low on disk space about 1.945 TB, how much more I can extend it from the vSphere level and from the Windows Disk Management level without breaking it or causing it to go offline ?

I need to know what;s the exact safest limit to extend this disk.

I have a LSI SAS 3000 1068E SAS PCI Card... It's used for our tape changer... Recently it started to get an error "The device cannot start code 10" on the device's general tab.  We even tried a new card and same thing...  We are running Windows 2008 R2.  I searched for a new new driver but no luck.  What should we try?
Hello everyone,

I have an IBM DS3524 on which one of the logical drive size threshold has exceeded.
I have freed up some space but the alert is still there and the consumed capacity is incorrect.

Is there a way to force it to refresh ? I have searched but I did not managed to find any solution.

Thanks in advance for your help,

I bought HP DL380-G4 server from eBay and it seems to work but I'm having problems installing Win 2003 OS- I've 6-hd @ 146 GB/ - I created the RAID containers- 2-RAID-1 and 3-RAID-5.  I tried to separate 6th had as a spare but I unsuccessful or couldn't figure out how to-?
This is my home network- lab I want to practice with it before joining the server team in a month or so.  
I tried to run SmartStart 8.70B for x64 and booted to the CD but it ran for a good 5-7 minutes loading but then I was left with a HP screen and no activity. So I decided the power down the server.
Windows is not able to see the hard drives? What am I missing here?
I have a  EMC VNX 5300 storage.i connect 4 new servers to the storage and now want to assign the LUNS to the servers.
 i found that there are 3 storage pools already configured with RAID 1/0 and some of the servers are connected to this storage pool.
now i want to create a new storage pool with RAID 5 but when i create a new storage pool it automatically add x number of disks to the storage pool.

q#1 i am scared that if i will create a new storage pool then it will not disturb the other storage pools (RAID 1/0) which are already configured.
q#2 i found that 18T RAW disk space free .how can i use this RAW disk space to create a new storage group and assign all the new LUNS from this storage Group
Hi, I have a small 3 user setup, we had an sbs server that got ransomware. We've restored the backup.
But I would like to look at removing a windows server from the network and move to a NAS that syncs in both directions with dropbox.
We aren't heavy users, but require local and remote access to the basic data.

Does anyone know of a NAS that will sync in both direction and not just do the NAS backup to dropbox ?

thanks for your time.
I have a customer with a Dell PowerEdge T320, the main drives are running RAID 0 and then they have (3) 1TB drives running RAID 5.  Last week, drive 4 came up with a PDR1101 error but everything seemed to work.  When I had this before, I just swapped the drive with a new one and RAID took over and wrote everything to the new drive.  This time, I swapped it and everything was working fine - I could access all the mapped drives so left the site.  Today they tried to get into their programs and there is only one mapped drive showing and it says that new drives must be initialized.  I tried to put in the old hard drive but get the same message - thoughts?  The system is running SBS 2011
Optimizing Cloud Backup for Low Bandwidth
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

hello everyone
 i wanna ask how can we upgrade on disk format of drives in vsan. do we need to put host on maintenance mode. or we dont need to.
also is it possible to upgrade the disk version of a particular disk group at a time.

please suggest and help
I am running low on space on a Server with 8 72GB Hard Drives in a Raid 6 Array

I would like to purchase 8 250GB Hard Drives and expand the space.

What is the best procedure for doing this.

I assume I will add 1 Hard Drive at a time - let it build and then add another - I guess that will take several days as each drive is added (or am I wrong)

My goal is to add the 8 new hard drives and then Expand the array for the added Hard Drive space.

We have the Primary Server and 3 Virtual Servers all using Hyper-V

Thank you for any suggestions

Can anyone help me with the best way to do this?
hello everyone. vsan setup

so i have four hosts.
2 hosts having 2 disk groups with 1 ssd and 5 hdds each
and 2 hosts with 2 disk groups with 1 ssds and 3 hdds each.

that make a total or near 34 tb of storage space.

tomorrow evening i am planing  to change ssd of the host one by one and at the same time i am going to patch my host with 6.0 u3 including drivers and firmware.

right now  the space i have in my data store is little less than 11 tb actually its 10.66 tb.

i have couple of confusions and questions that are stressing me.

1. should i choose the ensure accessibility to change the ssd and to patch?
because 2 days before i talk to gss team member during a call log and he said that we can change the ssd with ensure accessibility.
2. if i choose the host which have 2 disk groups with 5 hdd and 1 ssd each. what is the possible way to do that activity because i have only approx 11 tb of space.
3. should i remove one disk group with full data migration if yes how to check which ssd to remove because led function is not working .
4. even if i choose to do by one disk group at a time but when i will remove the disk group to change the ssd space with decrease to 6 or may be 5 tb which is 11 tb now.
5. and if i choose full data migration of that big host have more hdds space will not be enough.

so in this scenario which is the best possible way to do the activity of patch and replace of ssd.
as per my small experience storage space is a big issue …
I have 2 servers.  Both DL360 G6 servers with identical processors.  Both use the P410i controller.  The source server has 2 backplanes and 8 SFF hard drives.  The destination server has only the lower backplane.  

I need to move the RAID 10 array (4 drives) from the top backplane of the source server to the bottom backplane of the destination server.

When I swap the drives with the server offline I am told at bootup that the drives are not in their correct bays and recommends I run the Array diagnostic utility.  However the options available after that are bios setup and array configuration utility.  The latter does not allow me to fix this issue.  It would only allow me to delete the volume and start over.  

I am able to reach the storage controller CLI however none of the commands listed in help seem to have the functionality I am looking for.  I have run the SPP on the server hoping that it would update firmware etc.  

Is there a simple solution for this or do I need to backup/restore?
hello everyone,

i am planning to replace ssd in my vsan client environment.
please help me with the proper procedure how to do it.
do i have to do full data migration or ensure accessibility will be enough.

my ssd is not showing failure it is working fine for now but due to some issues we have to replace it.

please help me with proper way to do it.

my vsan version is 6.0
vcenter is 6.0 u2
and esxi is 6.0 u2
Two logical disks on a S300, one SAS 300GB one SATA 1TB both degraded non-critical. Initially one of the SATA disks was showing as being in the array but also a global spare. Unassigned that as global spare via OMSA as it clearly wasn't a global spare but logical disks still both showing degraded. The logical disk size is 0.01GB !

copy/paste from DSET report:

 Status  Name  State  Progress  Layout  Size  Device Name  Bus Protocol  Media  Read Policy  Write Policy  Cache Policy  Stripe Element Size  Disk Cache Policy
Status: Noncritical  Virtual Disk 1  Degraded  Not Applicable  RAID-1  0.01 GB (11545440 bytes)  Windows Disk 0  SAS  HDD  No Read Ahead  Write Through  Not Applicable  Not Applicable  Not Applicable
Status: Noncritical  Virtual Disk 2  Degraded  Not Applicable  RAID-1  0.01 GB (11545440 bytes)  Windows Disk 1  SATA  HDD  No Read Ahead  Write Through  Not Applicable  Not Applicable  Not Applicable

Any idea what to do to resolve without risking the data?
Is the RAID Controller Module Backup Battery Unit the same one used in all of the PowerVault MD3 series?
DP/N D668J?
I tried formatting SD card when i get to partition it says no space
Greetings Experts!
My vendor and support consultants have recommended an EMC Unity 300 storage unit, in lieu of my original request for a Compellent vcs2020.   According to them, the Unity comes with "many more enterprise level features," and caters more to a virualized environment.  Other than that, I didn't get many specifics on the differences between Compellent and Unity.  Could any of you experts chime in as to your experience with this/these product(s), specifically, what the Unity's special features are?  

A little context:
We run a simple 3-2-1 environment, where a cluster of hosts communicate through 2 switches to our shared storage array.  Ultimatley, we will be replicating data to an identical environment at a remote office, across the country.  

One more tidbit: our vendor has configured a Unity entirely with SAS drives, presumably to keep the cost closer to the original Compellent specs.  However, most of the value I see marketed on Dell-EMC's website has to do with Unity's flash capabilities.  If I'm not utilizing flash, is Unity a waste of resources?

All thoughts welcome... I realize that my situation is specific and may not mirror yours, but I'm looking for more info on the comparisons between small business leveraging of either Compellent or EMC Unity.  Thanks!!!
Announcing the Most Valuable Experts of 2016
Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

We have VERITAS NetBackup backing up data on several NetApp CDOT 8.3.2P3 CIFS shares.

The SQL servers run automated maintenance plans that back the databases up to folders on a CIFS share.  We then backup this Cifs share using NetBackup, via the UNC.  This has worked for five years (we only upgraded to 8.3 and CDOT in the past 12 months but we MUST have had a restore in this time period.)

The .bak file which we restore to disk from tape is exactly the same size but does not pass an MD5 Checksum and shows as being corrupt if we try to do a SQL restore from it.

If we do a SQL restore from the .bak file on the CIFS share all is well.  If we manually copy the .bak file to another share or folder we can also restore it.   I tried copying a .bak file to a local drive on the media server and backing THAT up and restoring it to another local drive and that worked fine.  the MD5 Checksum passed.

I have tried other CIFS shares as the source and destination to no avail.  I also tried backing up from a CIFS share and restoring to a local folder with no success.  

Data de-duplication and compression are enabled on the SQL backup volume but I have had similar issues on volumes where I have disabled those features.  Furthermore there has not been time for de-duplication or compression to run in my testing today.

This issue exists in databases from SQL 2005 through 2014.

I have no such issue with the other file types which I have tried.

Has anyone seen this …
We currently have a Proliant DL380 G9 server running RAID 10 (6 x 1.2Tb) disks. On this array, we have about 10 vms (RDS, Exchange etc) including a SQL server. When the SQL server gets hammered by queries, the performance of the disks (as shown by performance monitor), goes high as 280Mb/s and can slow the other VM's down (ie RDS server can go to a white screen for a few seconds). The Controller is a 440AR. In regards to this, if we created another array with, say, 2 x600Gb SSD drives, and only had the SQL on this array, would this solve the issue?
The prices for internal drives are higher than I want to pay. This is probably a stupid question, but I'm seeing 4TB external drives for less than the internal ones (including one that seems to be running at 7200 RPMs.). Why would I not cannibalize an external drive for the drive I want, particularly as the Imac doesn't have a USB 3.0 capability?
Today, I  hv the backup fail problem.
I try to reboot Server and the tape drive.
The media device can find the backup tape.
As the 1 week protective period,it cannot backup today.
I try to earse data but it wait for queue for a.long time.
I try to do inventory but it also queue.
pls help!
The drives are good, the cables are good, the power is good, but it won't even detect the drives in the BIOS screen.
Can someone help me troubleshoot?


Storage Hardware




Articles & Videos



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.