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

learn more… | top users | synonyms

1
vote
4answers
686 views

OSX Lion Server + XSan + Direct-Attached Storage

So my company is looking to switch to a DAS San storage system for our internal fileshare. I'm wondering if there are any great tutorials detailing how to set this up and what kind of equipment I'll ...
10
votes
1answer
4k views

Alternatives to Dell's mirrored SD card module for booting a small OS from flash?

Dell offers an add-on hardware card for some of their servers that provides a poor man's RAID1 between two SD cards (one card gets all the reads until it dies, writes are mirrored) for booting a ...
6
votes
1answer
212 views

HP P9500 block level data integrity checking

Does the HP P9500 do any sort of block level data integrity checking on reads? If so, I'm looking for actual documentation that it does indeed do such a thing.
1
vote
5answers
336 views

Pool storage on multiple ubuntu Servers?

Say I've got.. 5 servers, each server has a partition with 50GB's of storage. Is it possible for me to combine these 5 partitions and then mount them as one on a 6th server?
1
vote
1answer
217 views

SSD Write Performance and Relaibility [closed]

SSD do give a really fast Random Read Performance over conventional Hard Disks typical data transfer size is 4k or 8k.Although the Sequential Reads performance is not that huge, data transfer size of ...
-1
votes
2answers
135 views

Solid State Devices [closed]

Why is solid state devices not a good option to store data for a very dynamic (frequent updates) oracle database? Although for read intensive databases ssd does give a huge performance improvement.
-3
votes
1answer
651 views

Fiber Channel vs TCP-IP vs SAS. Which has better efficiency and why? [closed]

Three Major host connectivity protocols Fiber ChennelSASTCP-IP Which of these is the appropriate storage for 1. RDBMS Server like Oracle 2. File Sharing like Email or media files What is the unique ...
2
votes
2answers
189 views

Reset/reuse linux device letters?

Is there a way to tell the OS that /dev/sdd is really gone when I disconnect it and that it can reuse that letter? I have RAIDs hooked up through fibre channel. I have it set up so that fstab will ...
0
votes
3answers
124 views

Network-Attached Storage Advice

The company I work for utilizes an old, clunky Window SBS as a file server and Domain Controller. They're looking to reorganize their storage infrastructure to deal with data demands. I'm thinking a ...
2
votes
3answers
9k views

iSCSI Transfer Rate Using Standard Gigabit Networking

We just purchased a dell storage server with (12) 7200 RPM SATA drives running RAID 10 and (4) gigabit network interface cards. Additionally it has a PERC H700 controller card with 512MB of on-board ...
2
votes
1answer
1k views

Linux software raid GUI monitor for GNOME

I prefer mdadm to administrate my raid and I currently use a script to see the raid status. Running a (php)script to see the status is not exactly the most smooth experience for me so I have been ...
-3
votes
6answers
377 views

Is there any cheap way to create a server (or servers) with a petabyte of storage? [closed]

Cheap in terms of an individual funding it themselves, for research. This seems like a nearly impossible task, given the size of current drives.
4
votes
3answers
208 views

Is there any reason to store my data in /var/?

Right now I have a small server handling a few things—DNS, HTTP serving, email, etc—and am storing all my data in /data/, a directory I create on all servers I administrate. The reason I like to ...
1
vote
1answer
206 views

Solaris: Good Book for metastat?

Does anyone know any good book(s) on learning the ins and outs of Solaris's SDS (Solaris Disk Suite) and its corresponding commands (metastat, metadb, meta*)? I'm looking to invest some time into ...
1
vote
4answers
253 views

I know I have more free space

I'm trying to track down where all my hard disk space went. I have 1TB total space and, according to my system, 433GB used. However, I know I have more as I don't have any large files or folders that ...
0
votes
2answers
332 views

Is it possible to set up multiple named instances running on a SQl Server 2008 R2 Active/Passive Cluster?

I'm trying to plan a SQL Server 2008 R2 2 node Active/Passive failover cluster. Is it possible to set up multiple named instances running on the cluster? e.g. sqlcluster sqlcluster\demo ...
0
votes
2answers
388 views

synchronize files between remote sftp location and local

I am facing a quite familiar problem but have no clear idea on how to handle it. I'm a backend developer and i write my applications using Zend Studio. My employer requires me to work on a remote ...
0
votes
1answer
394 views

AWS EC2 EBS Microinstance Storage and Djangostack

I'm moving my person webpage to an Amazon EC2 free (for now) micro instance, and want to clarify some things. Since the micro instance does not have any "local storage", when i am installing apache, ...
2
votes
4answers
4k views

How long should a RAID Reconfiguration take? (Adaptec 6805)

I'm experimenting with various RAID configurations of a new Adaptec 6805 (not the 'E' model) Attached are 8x Hitachi 5400RPM 2TB SATA 6Gb Drives using the miniSAS to SATA cables provided. I created ...
-1
votes
1answer
206 views

why are FC drives so cheap? or Using Fibre Channel drives as internal storage RAID array [closed]

While looking on Google Product search for drives for a new file server, I noticed that that almost all of the cheapest 300GB 10k drives are Fibre Channel drives: Google Products search result page. ...
5
votes
3answers
16k views

Measure Linux IOPS for a running system

How do I measure IOPS of a running Linux server? I know that the theoretical IOPS of a SATA drive is around 90 and enterprise 10k SAS/FC disk is 180. I want to know how much my running system is using ...
8
votes
6answers
23k views

SATA drives in HP ProLiant server?

Does anyone know if I can install normal 2.5" SATA drives inside an HP DL360 G5 server? Right now it has 6 72GB SAS drives. I am looking for raw storage for my files SAS performance in not required.
3
votes
3answers
2k views

DAS or NAS for VMware?

I am going to be implmenting a VMware vSphere 4 setup in our company. At first I had the plans of using a Netgear ReadyNAS business applicance for VM storage via iSCSI. But as I was looking around for ...
1
vote
4answers
1k views

File based storage Vs Database Storage

our company at present stores a lot of automatically generated files on disk, this presnetly is well over 200,000 files, there PDF's and are around 100k - 1M in size. ive been asked to provide some ...
0
votes
2answers
4k views

How to connect an HP StorageWorks 8000 EVA via Fibre to a Windows Server machine for direct storage?

I have two used HP EVA 8000 AD524B drive enclosures with 14 146gb drives in each. They have 2 Fibre controllers in each. I would like to connect these two units to an HP Proliant DL380 G4 server ...
-2
votes
2answers
328 views

I need an affordable, mass storage system. For under £1000. Possible? [closed]

I've got a budget of £1000, but really I'd like it for less than that. I want to set up a 20TB+ storage system for a project I'm working on that will use roughly 15TB, and the rest for storing photos, ...
3
votes
2answers
6k views

Linux RHEL how to differentiate between a local disk and a SAN disk

I have a server with several disks and partitions. For an specific disk I want to know if it is local or in the SAN. I ran some commands: [root@server]# ls -l /sys/block/*/device lrwxrwxrwx 1 root ...
3
votes
4answers
392 views

Virtual SAN hardware and software

We are looking into SAN storage. I have been reading up on it for the last couple of months. We will probably purchase some consulting. For the time being, can anyone suggest a way I could ...
1
vote
1answer
352 views

Windows Storage Server and SSDs in Raid 0 - Slow performance

We have a computer running Windows Storage Server 2008 R2 with 6 SSD in RAID 0. This storage computer has one PCI-E with 4 Ethernet ports and we connected it to a gigabit switch to other computers ...
0
votes
2answers
823 views

How database is divided over multiple disk?

I am talking about a computer cluster in which there are total 4 nodes and 8 hard drives of 600GB capacity but if database size goes above 1TB then how mysql database would be divided (stored) over ...
1
vote
1answer
459 views

NHS WD Drive into HS HP DL180 G6 (SATA) Slot

I'm trying to find out if Non Hot Swap drives can be plugged into Hot Swap slots on a HP DL180 G6 server. I've been searching around but haven't found the answer I am looking for. I also can't find ...
0
votes
1answer
111 views

Managing multiple storage volumes in Microsoft SQL Server

I have a backup application backed by many databases (one per client) in Microsoft SQL Server, storing files in the database as BLOBs. We are looking to move this application to Amazon EC2, and ...
2
votes
2answers
899 views

Does there exist SATA tape drives in the native 800GB - 1TB range?

The largest SATA tape storage I have been able to find is 160GB native, which is the Quantum DLT-V4. Does anyone know of SATA (or USB3) tape storage with 800GB-1TB native capacity? Update It could ...
0
votes
2answers
204 views

raid5 xor calculation - few questions

I have few questions related to raid5. consider creating a raid5 device, say md0 with three disks. After creation, you start writing into the disk. Here whenever a file size of say 1gb is written , ...
1
vote
2answers
122 views

Fast, reliable, open source encryption for large logs

I intend to use cloud storage for some of my application logs. These logs might contain confidential business data, so I would like to encrypt them prior to upload. For security reasons, I prefer ...
1
vote
2answers
461 views

Alternative S3 for in-house use? [closed]

We have a project for which S3 is a perfect fit, but for some customers we need to run everything in house. Ideally, we'd run something such that little or none of the code needs to change; can ...
1
vote
4answers
636 views

Does SQLIO lie when run from a Hyper-V guest on a VHD?

SQLIO seems like a useful tool. I thought it would be interesting to try to measure the speed difference between a physical disk and a VHD. So I ran SQLIO on the Hyper-V host on the physical drive. ...
0
votes
2answers
109 views

Storage setup for large files

I need to store over 200TB of data (all types, biggest being video files) and be able to access it over a local network. The files will be accessed for editing or searches. I don't need versioning, ...
1
vote
2answers
260 views

Is it possible to do storage without RAID and unnecessary redundancy?

I'm building multiple storage nodes for Riak database. Each node contains 20-40 x 2TB drives. Riak replicates each save to 3 nodes so there I have redundancy. Now the question is that what's the best ...
0
votes
2answers
261 views

Consolidating storage on multiple VPS instances

Say you have four VPS instances running. One is an nginx proxy which handles requests for your two middle layers VPS instances running a web app via FastCGI and the final VPS is running the database. ...
3
votes
2answers
245 views

Flushing disk cache for performance benchmarks?

I'm doing some performance benchmark on some heavy SQL script running on postgres 8.4 on a ubuntu box (natty). I'm experiencing some pretty un-stable performance, even though I'm supposed to be the ...
14
votes
11answers
7k views

S3-compatible Object Storage systems [closed]

Has anyone come across a near 100% Amazon S3 RESTful API compatible object storage system? What I am after is a layer that sit on top of any (preferably a POSIX) filesystem that provides Amazon S3 ...
11
votes
3answers
8k views

Quick method to determine SSD drive health?

I have an Intel X-25M drive that was marked "failed" twice in a ZFS storage array, as noted here. However, after removing the drive, it seems to to mount, read and write in other computers (Mac, PC, ...
0
votes
2answers
1k views

SQL Server Database Design for Archiving Process

I am currently working on a large project to move an MS Access application to SQL server. Our team has been having discussions on the best way to design a part of the new database so I figured I ...
0
votes
2answers
514 views

EQL-PS4000 Fail Over test?

This is been confusing me, I need to demo a controller failure. The PS4000 will only kick over to the secondary controller on physical failure. So link state will not work. Other that me tearing into ...
2
votes
1answer
6k views

Is it possible to query the LUN ID of a list of windows server?

I'm trying a combination of FCINFO and PSEXEC to get the LUN ID (LUN NUMBER) used by servers, but i cant get this information directly from fcinfo. I've also try using WMI until i learned that i ...
2
votes
3answers
170 views

Adding Hard Drive to Production Server - Best Practices

I've got a Dell Poweredge 2850 up and running as our production Web Server. Its got a RAID 1 array for the OS, and a RAID 5 for data. I would like to add an additional drive on it's own (not a ...
0
votes
1answer
81 views

Cheap distributed hosting - will it improve service reliability?

I'm developing a quite popular mobile application which needs to download some amount of data at first run (then check availability of new data periodically). Currently I'm using shared hosting at ...
6
votes
4answers
366 views

What should I watch out for in building low-budget storage servers?

I'm looking to replace our current storage. The existing system is just a 450GB file share on our 7yr old domain controller, plus another 150GB from another server. We map these to drives on the ...
3
votes
4answers
1k views

Using a server as an iSCSI SAN for VMWare?

I've currently got 3 ESXi servers (free version), using direct attached storage. I want to move to shared storage, because direct storage is very limiting. There are about a dozen VMs, most are fairly ...