Primarily questions about disk storage, sometimes questions about application storage or cloud storage. Always questions about storing data.

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0
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1answer
83 views

LSI Megaraid 150-6 as regular SATA controller

I have an old but reliable server board that does not have any SATA ports on it. Also i have LSI Megararaid 150-6 (with latest firmware) which i want to use as ordinary "dumb" SATA controller. I ...
3
votes
2answers
141 views

Can a 7200RPM drive transfer speed at a full 6 Gbit/s?

Many vendors sell 4GB SATA and Nearline SAS drives which spin at 7200RPM. The vendors will advertise a 6 Gbit/s interface with no mention of actual data transfer speed. I've had conversations with ...
1
vote
1answer
123 views

Additional Storage Options for Hadoop HDFS Nodes

We have a small production Cloudera distribution Hadoop cluster(14 nodes, but growing). As we have expanded our usage of this cluster we have found that disk storage is our biggest blocker and ...
11
votes
4answers
646 views

Disk Speed Performance in a SAN

We are currently looking into buying a SAN, and have some concerns over the speed of disks we are going to put into the array. We would normally have gone for 15k disks over 10k every time, but one of ...
4
votes
1answer
67 views

UCS FC Adapter Aborts

So here's the scenario, and I'm hoping @Chopper3 can chime in here. For our SAN fabric, we have a pair of Cisco MDS 9513 FC switches with three EMC frames and four Cisco UCS domains directly attached. ...
0
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1answer
39 views

I want to enable Blob Storage for my website, will this plan work?

My current setup is a website hosted with Azure Websites. Unfortunately, due to site growth, I need to enable Azure Blob Storage on the site, but it's not as easy as flicking a switch. My plan is to ...
0
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1answer
64 views

Scalable NAS: on-premise and minimum of 6 TB [closed]

Shying away from the trending cloud storage and hosting a website on an on-premise 6TB storage, what would you recommend for a scalable NAS. Strictly, the storage solution requires on-premise and ...
0
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0answers
78 views

XenServer 6.2 - Free disk space is less than 20% on volume /

On XenServer 6.2 standalone instalation there is less free disk space than 20%. In my monitor I see this. I found there tons of *.gz in /var/log. Now storage is on 76%. Do you know how to solve ...
7
votes
1answer
202 views

Which block sizes for millions of small files

I have 2x 4TB Disks in hardware RAID1 (it might be a LSI MegaRaid) on Debian Wheezy. The physical block size is 4kB. I'm going to store 150-200 million of small files (between 3 and 10kB). I'm not ...
1
vote
1answer
87 views

libvirt Storage Backend

libvirt supports several storage backends[1] for hosting the image on a different server. We have 6 servers running about 40 VMs. Up to now we use local storage, but to minimize the downtime we want ...
2
votes
3answers
101 views

How to combine storage from different linux servers across public network

I have dedicated hosting servers of 2 TB each, (7 of them) . Now i want to combine the unused space from them and converge them into other server . Note that the servers have public network . Found ...
0
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0answers
52 views

EMC + powermt display + dead error

I have Linux red-hat 5.5 cluster machine that connected to EMC storage When I perform powermt display command I see under dead line the number 1 In place to get normal state as 0 Please ...
2
votes
0answers
67 views

Infiniband link is at 4X SDR with DDR HCAs; has anyone seen this before?

I've recently upgraded my Infiniband HCAs from SDR to DDR, however upon upgrading, it has not improved the link speed at all. Receiving the following output from 'iblinkinfo': CA: ip-san-1-au3a ...
1
vote
2answers
122 views

Indepedent pairs of RAID 1 is superior to RAID 10

I am rather new to databases. I was reading up on RAID Storage and it seems that the consensus is that RAID 10 is RAID 10 is best is terms of performance and redundancy However at the end ...
0
votes
0answers
45 views

Server 2012: Space not reclaimed after moving files off volume?

When I move files off of a volume on my Server 2012 computer, the space is not reclaimed and continues to show the amount of free space that was available before I removed the file. The volume in ...
1
vote
0answers
96 views

Issue deleting files from a NetApp Windows Share

At work we have a NetApp Windows Share setup. I browse with Windows Explorer to a folder which contained thousands of text files. I then select multiple files at the same time and delete the files. ...
1
vote
1answer
36 views

Prevent NexentaStor analytics page from timing out

NexentaStor has a handy profiling interface that serves as a front to certain dtrace scripts. It's handy for monitoring realtime IOPS or I/O throughput of the appliance. Unfortunately, this interface ...
3
votes
1answer
38 views

How do I properly build a volume group and logical volume for 500GB in AIX?

I've been fiddling around with AIX 5.3.7 for hours today, and I was able to build a VG and LV, but I'm having difficulty using all the space in the LUN I carved out (500GB). I'm not sure if i'm ...
1
vote
1answer
75 views

Storage Spaces adding a mirrored drive later

I am planning to use Storage Spaces in Windows Server 2012 R2. I want to initially set up my sever with 1 hard drive in the storage pool. Is it possible later to add a second drive that mirrors the ...
2
votes
1answer
479 views

XenServer 6.1 Reports Wrong Storage Amount in XenCenter

We're using XenServer 6.1 Advanced on three blades in a pool. I'm in the process of moving storage from an old SAN to a new SAN using Storage XenMotion. So far, so good! I discovered though, on a LUN ...
1
vote
2answers
188 views

OMSA Add new disk and convert current single disk to RAID1

We got our new server last week, and unfortunately one of the two disks could not be delivered. Now we've got the second disk, and I want to install it and join it with the current disk to create a ...
0
votes
0answers
62 views

Data deduplication works vice versa

I have enabled data deduplication on one of my SSD's volumes and then run Start-DedupJob cmdlet with optimizastion parameter on this volume (Windows Server 2012). After dedup completed i check ...
1
vote
1answer
22 views

external mSAS expansion

I got two servers. One with a Intel RS2MB044 and one with an Adaptec ASR-51245, both got an external mSAS connector. I need to connect these tho servers together, basically to share the file system ...
2
votes
0answers
60 views

Shrinking a volume and extending another in dynamic disk

I have a test environment where I converted a disk to dynamic, shrunk a volume, and then expanded another all on the same disk. The result is that disk management in Windows Server 2008 R2 shows two ...
2
votes
1answer
102 views

Rack Storage - Backplane with 20 SATA connectors or backplane with 5 Mini SAS connectors?

I am comparing two rackmount server chassis (Norco RPC-4220 and Norco RPC-4020, FWIW), which are identical except for the backplane connectors. One has 20 SATA connectors and the other has 5 Mini SAS ...
3
votes
1answer
58 views

LFF in HP DL360p, how and is it a good idea?

I need a new server with 10 Tb storage and was looking at a DL360p with a D2600. It would do the trick, but it´s quite expensive and I´m looking for alernatives. 4 x 4 Tb would be enough, both for ...
0
votes
0answers
121 views

IBM Storage DS3400 flashed firmware from 6.x to 7.x, now storage is unresponsive

I actually missed to flash the ESM firmware prior to the controller and NVSRAM firmwares. Current stage is, SMClient GUI cannot detect the storage. I can ping and telnet in one of the controller ...
2
votes
4answers
413 views

Suitability of DL380p-Gen8 + D2700 for SQL 2012 Standard Edition

A question for those who know about HP server performance and SQL... I am trying to spec a suitable server that has the following requirements: Run SQL 2012 Standard Edition (I cannot get approval ...
1
vote
1answer
438 views

How often should I defrag ZFS pools?

I ZFS scrub once a month which takes ~24 hours for the 72TB. For what I can find about how often I should scrub is: very busy pools, once per week not so busy pools, once per month or run a scrub, ...
1
vote
0answers
249 views

windows2012 failover cluster + storage. Considerations

We plan to build a failover storage with Windows2012r2. There will be 2 or 3 physical machines with 2 virtual machines on each server. One virtual machine building a failover, second one being storage ...
1
vote
1answer
56 views

Secure Method for RAID Device Permissions for Network Storage

I manage a smallish network that supports a dozen or so employees. We have about 8 TB of data that lives on several NAS devices. I built a 20 TB RAID file server (with a XFS single partition) recently ...
-1
votes
2answers
138 views

High density disk bay rack chassis - why such a big difference in price?

We're looking for a chassis with 45-60 bays for SAS/SATA disks and we found some 60-bay enclosures at ~ $11000 (see here and here for example - there are others as well). However we found this one ...
0
votes
5answers
721 views

Windows Server 2012 Hyper-V Failover Cluster + Active/Active HA storage solution

I have a question. I need to build active/active HA storage architecture, but I don't know how achieve this without expensive third party software. I have two Hyper-V hosts, each with iSCSI storage. I ...
1
vote
1answer
33 views

Backup slowness after changing the SAN switch

We have a netbackup environment Recently we changed the connectivity of two of our sql servers(cluster servers) from one SAN switch(MDS 9509) to another (MDS 9513) followed by which we are ...
1
vote
4answers
73 views

Need to make a storage that keeps growing in size [closed]

First, due to security reasons and others I wont be able to make use of S3, or other similar solution. I have a a storage server in which I have a 1TB had disk. I have a Mysql server running in it. ...
0
votes
0answers
43 views

Storage of large number of files for a web application

There's an old discussion whether and application should store its files in a database or in the filesystem. Both have their pros and cons. I want to know if there's any specific system for ...
1
vote
0answers
49 views

Are there any opensource/free tools to build cloud based file storage? [closed]

I have around 50 windows machines. They are used for some computing works, which are running some in-house .NET applications. Each of them has 1Tb hard drive. I would like to utilize unused spaces on ...
1
vote
1answer
165 views

ESXi: Storage Adapter Paths - Active/Standby to Active/Active

We have a couple of servers acting as VM hosts (ESXi v5.1) and they are connected to a Dell MD3220 SAS Array (2 cables each, split across 2 controllers). We've just noticed that multipath wasn't ...
3
votes
2answers
39 views

hba for software raid

In a software raid environment, is HBA failure the same as a hardware RAID controller failure? Do you still have to find the same model HBA to put into a different server in order for the drives to ...
0
votes
1answer
54 views

Unmount volume or halt Linux on disk IO error

Is there a way to dismount a volume (with open files on it) or cause kernel panic if IO error occurs on underlying disk? OS is Linux. This is needed to prevent data corruption in case of storage ...
0
votes
3answers
234 views

What are the benefits of having local disks on hypervisor nodes running VMs off a SAN?

When an hypervisor like XenServer or vSphere can be run on diskless nodes (eg. by booting from flash cards or from the network) and VM storage is handled via a SAN, is there any good use for local ...
0
votes
1answer
41 views

Grid storage for large files on multiple external machines

I have several dedicated servers with unused space on them. 16GB+ RAM, some have SSD, other HDD. All have minimum 100Mbps connection. OS is Debian 7 64bit. There is no LAN connection between machines ...
0
votes
0answers
36 views

windows storage server 2012 web administration

I needed to build a raid server in house for development. Being in MSDN we chose windows storage server 2012. We set up a storage pool and exercised fails and then re-built the server. I bumped into ...
46
votes
8answers
2k views

What are the advantages of tape drives?

IBM still develop and sell tape drives today. The capacity of them seems to be on a par with today's hard drives, but the search time and transfer rate are both significantly lower than that of hard ...
1
vote
1answer
72 views

Sharing information between nodes in Beowulf Cluster

I am setting up a beowulf cluster and I've been reading that it might be necessary to make the home directory of the cluster users shared between them (assuming this users are local to each machine). ...
2
votes
1answer
298 views

MacBooks are destroying SSDs

I'm opening this topic to find the cause of our SSD failure rate of +50%. We work with Mac (13" Macbook Pro & 13" Macbook Air), with installations of both Mac OSX Mountain Lion and Ubuntu. 90% of ...
1
vote
4answers
772 views

Creating bootable Fedora USB with persistent storage

I am attempting to burn the full Fedora 19 x86_64 DVD iso to a USB drive and have a separate partition on it for a kickstart file / other media that will be installed in the kickstart process. With ...
1
vote
2answers
72 views

RAIDs with a lot of spindles - how to safely put to use the “wasted” space

I have a fairly large number of RAID arrays (server controllers as well as midrange SAN storage) that all suffer from the same problem: barely enough spindles to keep the peak I/O performance, and ...
0
votes
2answers
165 views

Cannot join CIFS server to a active directory domain

We have a VNX5700 in our environment , it had two datamovers(one as primary and the other secondary). Recently we added a third datamover to the array and configured it as an active DM , so we will ...
0
votes
1answer
146 views

Solaris iSCSI read speeds increase when we start writing

Here's one I haven't seen before. We have an IBM Storwize V3700 storage array, 24 TB, RAID 5 connected to a Solaris 10 file server via an iSCSI link over Gigabit Ethernet (no MPIO at present). We ...