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

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2
votes
2answers
124 views

Why it is dangerous to turn off storage arrays even in extreme cases?

I have read in a couple of places that when you are in the situation in which there are no spare disks and the RAID level doesn't protect you from another disk failure, some administrators choose to ...
0
votes
2answers
92 views

Is there redundancy during a RAID build?

We're building an array of 12x 2TB drives in a RAID60 array using an Adaptec hardware card. It's taking a long time to build/verify, and performance is slow. We've worked out that it will be around ...
2
votes
5answers
139 views

Provide iSCSI storage for Virtual Environments through host or directly to guests?

We are planning to place a HP MSA P2000 with two FC/iSCSI controllers in our network. We have two options to provide more storage to Virtual Machines (We are running Hyper-V): A) Add iSCSI targets ...
0
votes
3answers
2k views

Software RAID underneath ESXi datastore

I'm building an virtual environment for a small business. It is based around a single ESXi 5.1 host, which will host half a dozen or so VMs. I'm having some doubts regarding how to implement the ...
0
votes
1answer
94 views

Which hardware I need for building up a backup server, which is able to store 100TB+? [closed]

we are managing a pool of 40 PCs with an attached storage of up to 3 TB each. Every weekend we copy this data to 3 other PCs with several RAID5-systems inside to have some kind of backup. We chose 3 ...
1
vote
1answer
199 views

Does a 3ware “ECC-ERROR” matter on a JBOD when I have ZFS?

I have a FreeBSD 8.x machine running ZFS and with a 3ware 9690SA controller. The 3ware controller shows an ECC-ERROR with one of the disks: //host> /c0 show VPort Status Unit Size ...
-1
votes
2answers
460 views

ESXi local storage recommendation

We are going to buy HP Proliant Server Dl 380p G8, and we want to run vmware esxi 5.1. but I have problem with choosing the correct storage with the lack of budget. we have choice to buy 4x2TB SATA or ...
5
votes
2answers
2k views

Can I determine IOPS on a disk array using bonnie++?

I would like to measure the read and write performance of a RAID6 array verses a RAID10 array. I understand that bonnie++ can be used to calculate disk performance, but the numbers produced by ...
8
votes
2answers
193 views

A roundrobin for incoming files

A bunch of new files with unique filenames regularly "appears"1 on one server. (Like hundreds GBs of new data daily, solution should be scalable to terabytes. Each file is several megabytes large, up ...
1
vote
1answer
60 views

Safest approach when designing storage server [duplicate]

We are planing cloud solution for our customers and we are really concerned with designing safest storage servers for their files. This storage won't be IO demanding, as it will contain only files ...
1
vote
3answers
165 views

Storage for KVM virtualization

I am looking into setting up 3 kvm hosts. Currently I am using local storage with mirrored drives raid 1 for images. I am also using raw images. I was wondering if this is against best practices and I ...
1
vote
1answer
155 views

HP MSA1500 - getting past the 2TB limit?

I currently have (7) 300GB drives in the MSA1500. This is configured with RAID 5 which results in a 1.8TB drive, about 1.6TB formatted. I still have 7 more empty slots in the enclosure that I would ...
1
vote
2answers
149 views

Advice for inserting additional disks to a ZFS mirrored pool?

I am running FreeBSD 9.1 with root on a ZFS mirrored pool. At first the pool (labelled zroot) has a total of 1TB spanning two 1TB drives. Recently we have run into disk space issues in which the ...
-1
votes
3answers
351 views

Managing storage for Virtual Machines in Red Hat Enterprise Virtualization (RHEV)

I am using RHEV and I have created two virtual machines. These have too little disk space, how can I edit the disk space of these machines? I cannot find the option anywhere.
-5
votes
2answers
382 views

P812 “forgot” RAID6 - can't see disks at boot time in ORCA

We have an MSA60 with 12x4TB non-HP issue Seagate Constellation ES.3 drives connected to a P812/FBWC, on which I created a RAID6 over all of those disks with hpacucli and started to copy data on them. ...
-3
votes
1answer
60 views

How much should it cost to implement shadowing for a Windows Server 2008 environment? [closed]

I should perhaps preface this by saying that I am not a sysadmin but rather a user. The reason I'm asking this question is because I and other users at my company have experienced accidental deletion ...
1
vote
2answers
42 views

Use a virtal disk over shared storage, or expose shared storage inside guest [closed]

At work, we have a system that relies on what I can equate to a flat file database. It does what appears to be liner scans of each database file. Naturally, our limit here is going to be file I/O. ...
0
votes
1answer
60 views

How to ensure all public mirrors contain same content?

Basically I plan to have some files mirrored on multiple servers on different providers. A unique cname will auto-balance the traffic across all available mirrors and will serve from the closest to ...
16
votes
3answers
2k views

How effective is LSI CacheCade SSD storage tiering?

LSI offers their CacheCade storage tiering technology, which allows SSD devices to be used as read and write caches to augment traditional RAID arrays. Other vendors have adopted similar ...
0
votes
1answer
228 views

How to perform Amanda Incremental Backup

I had configured and backup some of windows clients I have a few questions: How can I check the incremental backup is performed or a full backup, I use (amdump server1) to backup all client systems, ...
0
votes
1answer
59 views

MPIO alike multipathing tool for Windows Server [closed]

We are looking for free multipath tool available for Windows Servers alike MPIO. Vendor specific multipath tool like Powerpath for EMC are license based and would like to evaluate different open ...
1
vote
0answers
53 views

Is it possible to dynamically set the upload_store value for nginx upload modue?

I have a lot of hard drives in my server and I want to upload files to them. Since it is overhead to upload a file to one drive and then move it to another, I would like to directly upload the file to ...
-5
votes
1answer
421 views

ESXi 5.0 - Software RAID 1

Environment: Storage: HP P2000 MSA G3 SAS Array with 24 300GB 10k SAS Disks Two Storage Controllers with redundant SAS connections to each host Hosts: Three HP DL380 G7s with a 10GB SD Card, ...
2
votes
1answer
68 views

Ultra 320 SCSI termination

I want to connect an old 12-bay DataStor InfoStation (which is an external storage cabinet) to an LSI MegaRAID SCSI 320-2E host bus adapter and now wonder what bus termination guidelines to follow. ...
-1
votes
1answer
414 views

Dell Compellent SAN with ESXi 5.1 iSCSI

I have a Compellent SAN that I am trying to point to my ESXi server through iSCSI. In the Compellent UI: i've created a volume. It, of course, says the volume is offline until you map it to a server. ...
5
votes
2answers
240 views

Networking with VMware, physical adapters and iSCSI

New VMware user here, setting up my first environment. I have an ESXi host that has four physical NiCs (NiC0, NiC1, NiC2, NiC3). I have installed ESXi, the VCVA appliance, and several VMs ...
3
votes
1answer
828 views

Hyper-V and using SMB3 shares to store data

I'm using Hyper-V remote management from a management/file server to control 3 Hyper-V core servers. Now I want to store all the virtual disks and virtual machines on a SMB share on the management ...
6
votes
1answer
4k views

How exactly does a SAS SFF-8087 breakout cable work? + RAID/connection questions

Please let me know if my question does not makes any sense as I am not sure if I am interpreting it correctly from my thoughts due to my lack of technical knowledge on this. If I am using a ...
-3
votes
1answer
44 views

Mix physical media for ESXi VM, or keep it all on one physical volume? [closed]

Say I have a 120GB SSD and a 2TB volume from a portion of a larger RAID6 array. I would like to spin up a Windows Server VM for purely low-impact personal use that employs a large data store in some ...
3
votes
1answer
329 views

Migrating RAID6 array from HP SmartArray P600 to LSI MegaRAID SAS 8888ELP

My customer has an external RAID6 array (8x 1TB in HP MSA60 enclosure) attached to HP SmartArray P600 controller. They have now decided to replace the server and the new one comes with LSI MegaRAID ...
2
votes
1answer
521 views

NFS mount has stopped working on ESXi

We have had around 20 hosts connected to an NFS share running from an Ubuntu server. The other day they all lost connection. We have rebooted the NFS server to rule out any services going funny. When ...
105
votes
5answers
10k views

Are SSD drives as reliable as mechanical drives (2013)?

SSD drives have been around for several years now. But the issue of reliability still comes up. I guess this is a follow up from this question posted 4 years ago, and last updated in 2011. It's now ...
1
vote
3answers
226 views

ESXi running 2 x Windows 2012 setup advice

After much deliberating and advice I'm intending to use an element of virtualisation for deploying some new servers. The original (physical) plan was one server running as domain controller, SQL ...
1
vote
2answers
166 views

Any good apps to visualize what's happening on an iSCSI Storage network

I'm a developer/SQL type person that has inherited an iSCSI SAN/Vmware setup in the past year. HP Lefthand P4500 SAN. Single iSCSI switch - HP Procurve 2810. Dell Equallogic PS6010E 10gb SAN (not used ...
0
votes
0answers
54 views

Identical tables, different sizes?

I have transactional replication with updatable subscriptions going between a few SQL 2008 R2 servers (publisher is Enterprise, subscribers are Express). I need to add another subscriber, and come to ...
3
votes
1answer
70 views

Is it possible to connect a FC HBA 8 Gb through 10 Gb Ethernet SFP+?

I have to connect an IBM Server with a QLogic EP2532 to an IBM DS3512 with a PMC PM8032. I need two 8 Gb FC LX 1310 nm SFP+ modules and since they seem to be hard to get, I thought would it be ...
3
votes
2answers
2k views

Why did robocopy cause my Windows 2012 server to hang last night?

I'm in the process of decommissioning an old 2003 server, which acts as a file server, and am just attempting a dry-run of migrating the file repository over to a new Windows Storage Server 2012 box. ...
1
vote
2answers
743 views

NetApp - right configuration for vSphere environment

I'm thinking now about buying a NetApp for my vSphere environment (use NetApp NAS features). I'm looking for a solution that will give me at least 6000IOPS, and i need about 15TB of storage. I thought ...
1
vote
1answer
78 views

Solaris not seeing FC volume

We recently replaced a failed controller in an AL connected RAID. I wasn't the one that replaced the controller, but apparently when the new controller was installed something weird happened with the ...
0
votes
4answers
196 views

High speed storage drive (over 8 GByte/s) [closed]

Looking for a windows based solution to create a high performance, 8 GB/s storage array. Either by striping together dozens of SSDs, or by create multiple RAID arrays and somehow pooling them ...
-1
votes
1answer
69 views

Storage virtual machine. LVM or loop devices? [closed]

Actual situation: I'm the administrator of a virtual machine. The virtual machine is a Debian. This machine will be mainly a storage machine with different services (svn, ftp... ), and a webserver. ...
1
vote
1answer
269 views

ZFS configuration opinions [closed]

Currently, I'm tasked with progressively building a ZFS store. IOPS are not the priority, data security and capacity are. In essence what we have is one brute of a machine, that contains an OS ...
0
votes
1answer
281 views

P2000 G3 for VMware - one vDisk, Multiple RAID levels?

I have a dual controller P2000 G3 (SAS 6GB) hooked up to 3 ESXi hosts. There are 12x 600GB 15k rpm drives total, and I have set them up in 1 RAID10 vDisk to maximize performance+reliability. The ...
21
votes
7answers
2k views

Best way to test new HDD's for a cheap storage server

I want to build a storage server and bought 10 x 2TB WD RED's. The HDD's just arrived. Is there any tool you guys use to check for bad drives or to best defend against infant mortality before copying ...
3
votes
3answers
1k views

Vmware Storage Appliance: Does It Deliver?

I'm on a tight budget and can't afford a SAN. I'm considering a Vmware Essentials Plus Kit deploy on 3 servers. This includes vSphere Storage Appliance. Vmware claims it will do what I need it to.. ...
0
votes
1answer
29 views

Before buying it, how can I tell if a storage array makes certain performance counters available over SNMP?

I've noticed that documentation for SNMP reporting that is built-in to devices (i.e. doesn't need an agent running in an OS) usually doesn't include a list of performance counters that are available ...
4
votes
1answer
1k views

How to reliably map vSphere disks <-> Linux devices

Task at hand After a virtual disk has been added to a Linux VM on vSphere 5, we need to identify the disks in order to automate the LVM storage provision. The virtual disks may reside on different ...
1
vote
2answers
241 views

Server 2012: how to plan for storage failover?

The Stuff I have the following components to work with: two rooms two beefy Dell R510s, one in each room two EMC VNXe storage devices, one in each room. The goal Ensure that if one server room ...
0
votes
2answers
232 views

Disk status on Dell Powervault 1200 attached storage?

I have a RHEL box with direct attached storage (Dell Powervault 1200) containing 10 disks in RAID 10. There are two logical volumes set up on the server. I am wondering how to determine the health ...
1
vote
1answer
46 views

Moved data from an ext4 volume to an ext3 volume and it is consuming more space, why?

Just need a simple answer, did some searching and couldn't find it. What is the metadata overhead with ext3 as compared to ext4? I migrated a number of volumes from a SAN that was using ext4 volumes ...