Monthly Archives: October 2012

Comparison of BLOB cloud storage services

In the table below I’m trying to compare Amazon AWS S3, Microsoft Azure Storage, Google Cloud Storage, Rackspace CloudFiles.

Hope this is useful.

Amazon AWS S3 MS Azure Google Cloud Storage Rackspace Cloud Files
Max account size Unlimited? 200 TB per storage account(by default you have 20 storage accounts per subscription) = 4PB Unlimited? ??
Geo redundancy +extra price +extra price ?
SLA Availability SLA: 99.9%Designed to provide 99.999999999% durability and 99.99% availabilityReduced Redundancy:Designed to provide 99.99% durability and 99.99% availability Availability SLA: 99.9% Availability SLA: 99.9% Availability SLA: 99.9%
HTTP + + +
HTTPS + + + +
Container namespace Global LName collision is possible Storage account Global L Account
Container (bucket) levels single single single single
Root container -but with HTTP each bucket can have DNS name (not possible with HTTPS) + -but each bucket can have DNS name
Cross origin CORS support + +experimental +
Max number of containers (buckets) 100 unlimited Unlimited? 500,000
Container name length 3-63a few limitations, basic form is “my.aws.bucket“in US region:255 bytes[A-Za-z0-9.-_]But DNS-compliant is recommended 3-63 chracters, valid DNS name 3 to 63 charactersvalid DNS nameIf name is dot-separated each component <63 character, and 222 total 256after URL encoding, no ‘/’ character
Max files per container Unlimited, no performance penalty unlimited unlimited Unlimited, but API throttling begins at 50000 files.
List files, max results 1000 5000 ? 10,000
List files returns metadata +(configurable)
File (BLOB/object) name 1024 1024 1024 1024 bytes after URL encoding
Max file size 5TB 200GB (Block blob)1TB (page BLOB) 5TB UnlimitedMultiple files in the same container with same name prefix can be joined into single virtual file.
Max upload size 5 GB 64 MB 5 MB? 5GB
HTTP Chunked upload + +
Parallel upload + + ?(Resumable Uploads of Unknown Size) +
Upload Data checksumming + + +
Server-side copy +(up to 5 GB?) +supports external sources + +
File metadata 2KB, ASCII,no update 8KB + (size limit non specified)No update 90 pairs or 4096 bytes total
# data centers 8 8 ? 2: ORD, DFW
CDN-enabled + + ? +
Authentication HMAC-SHA1 signing HMAC-SHA256signing OAuth 2.0Google cookie1-hr JWT token 24-hr token obtained from Cloud Authentication Service.
Time-limited shared access + + + +
File auto expiration + +
Server-side encryption +AES-256
PRICING
Storage per GB a month $0.055 – $0.095 for fully redundant

$0.037 – $0.076 for reduced redundacny

 

$0.055 – $0.095 for geo redundant

$0.037 – $ 0.07 for locally redundant storage

$0.054 – $0.085 for full redundancy

$0.042 – $0.063 reduced redundancy

$0.10
Outgoing bandwidth per GB $0.05 – $0.12 (US)

1GB /mo is free

$0.05 – $0.12 (UE/EU)

$0.12-$0.19 (Asia)

$0.08-$0.12 (US)

$0.15-$0.21 (Asia-Pacific)

$0.18
Incoming bandwidth $0 $0 $0 $0
PUT, POST, LIST $0.005 per 1000 $0.01 per 100 000 storage transactions $0.01 per 1000 $0
HEAD, GET, DELETE  $0.004 per 10 000(no charge for delete) $0.01 per 100 000 storage transactions $0.01 per 10 000(no charge for delete) $0

Update (Nov 23, 2013):  About 30% cost reduction by Google; up to 24% price reduction by Amazon ; same 24% reduction by Microsoft

UPDATE (Nov 5, 2012): Azure Strorage now has higher limits, way better internal connectivity network, and higher performance targets, see announcement.

2000 IPOS per partition, 20000 IPOS per storage account.

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