For questions about the persistent storage of database data.

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4
votes
1answer
246 views

Storing phone number in E.164

TLDR; If I store a phone number in MySQL(or any DB with equivalent constraints), would the correct format be E.164 values into a VARCHAR(32) field? Have been reading up on format/storage of ...
1
vote
1answer
33 views

ASM and IPv6 Compatibility

In the whitepaper mentioned below, Under 'Limitations' it says ASM and fan based notifications are not supported by IPv6 in Oracle. I'm just curious what ASM has to do with ipv4 or ipv6 or ipv4? ASM ...
0
votes
1answer
183 views

Is there any relation between BSON storage for mongoDB and MySQL storage?

I am working on an application where I need to make analysis that what will be the storage size of BSON structure if same data is stored which is stored in MySQL. Basically I am comparing MongoDB and ...
4
votes
0answers
207 views

Storage snapshots for consistent backup of postgresql - different data and log volumes

We are running many Linux VM's in a vmware/shared storage environment, each running its own instance of postgreSQL (a mix of 9.0 and 9.3). Currently, the entire VM sits on a single root ...
3
votes
0answers
61 views

Different Disk Drive Same Backend Storage

I have a database running on a VM which is getting hammered during a large load, in particular I can see waits of WRITELOG happening. My initial thought is to split the files out on to their own ...
2
votes
0answers
340 views

How to use Blob Storage as shared storage in a Windows Azure Failover Cluster?

In the context of SQL Server 2012 Standard Edition, is it possible to make Azure Blob storage available to a SQL Failover cluster directly as a shared SCSI resource on a Windows Cluster composed on ...
2
votes
0answers
259 views

always on availability group with different speed disks

I'm looking to set up SQL Server 2012 installation with an Always On Availability Group, where the 'passive' replica will be hosted at another site on the WAN and using synchronous data commit - the ...
1
vote
0answers
51 views

SQL Server index rebuild cause database growth

I have a 80GB database with about 20GB of indices size. Whenever I build the indices online the database file will grow to gain 20GB of unallocated space, and if the unallocated space is less than ...
1
vote
0answers
16 views

Split Mirror Backup in db2

In my database apart from storing the daily backup, the disks are getting used for other purposes also. So how can I do the disk mirroring for Split Mirror Backup if I don't use external storage?
1
vote
0answers
41 views

Data mirroring suggestions

On my test environment, I have a SQL 2012 2-node physical cluster that accesses a common iSCSI storage on a separate Windows Server 2012 box. What options are there if I want to backup this storage to ...
0
votes
0answers
29 views

What is database storage structure?

I'm curious that there is a term "storage structure" in the context of databases, but there is no clear definition to be found in the textbooks. Wikipedia ...
0
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0answers
23 views

Is it possible to use secondary indexes with Mariadb and Spider?

I'm working upon a Mariadb cluster with 3 data nodes + 1 master node running Spider storage engine. Running queries from spider node, I cannot force data nodes to use secondary indexes, as happens ...
0
votes
0answers
25 views

MongoDB: poor compression rates

I'm importing a small set of data from Oracle in MongoDB. Basically, I have a table which is about 1Gb in Oracle (avg_row_len x nb. rows, i'm not counting the index sizes. Though data is compressed). ...
0
votes
0answers
35 views

Rule of Thumb on OS Free Space

This may be a difficult question to answer, but I have a PostgreSQL database running on a Linux server with 1.3 TB of storage. I'm currently at 73% utilization of storage space with a slow but steady ...
0
votes
0answers
25 views

Storage strategy for polynomials

What is the most space efficient way to store arbitrary length univariate polynomials? I have a large amount of polynomials that look like 3*x^7 + 12*x - 13 9*x^32 - x^14 + 2*x^3 - 9 ... Each ...
0
votes
0answers
107 views

How calculate per tenant disk usage in a multitenant database with tenant_id columns?

I would like to provide forum hosting as a service, for forum software I'm developing. The data is stored in a PostgreSQL database, in tables with a forum_id column. That is, all forums share the same ...
0
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0answers
60 views

MySQL - Database has huge overhead but tables don't

I have some problems with two MySQL databases. The databases have huge overheads but none of the tables do. When I recreated the tables the overhead just reappeared aswell. I hope you can help me. ...