Choosing the Correct EqualLogic SAN Array
 Miles Consulting Corp is an EqualLogic Certified Partner that is providing a model comparison to help its clients make their selection. We also provide an Equallogic Price List as well as Equallogic Usable Capacity information. All the new Dell/Equallogic units include 8 or 16 drives, dual power supplies and dual fans. Single controller units have three (3) GbE connections and Dual controller (active/passive) models have six (6) GbE connections. The complete suite of software is included - Snapshots, Replication (for off-site Disaster Recovery), Volume Management, Multi-path I/O capability (for performance), Cloning and more. There are no licenses or keys needed.
The following model comparison table was last updated on October 29, 2010. It shows usable capacity based on one of three RAID types: 10, 50 and 5.
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| PS6000 SERIES: VIRTUALIZED ARRAYS DESIGNED FOR THE ENTERPRISE DATA CENTER |
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ARRAY CAPACITY |
DISK DRIVES |
DRIVE CAPACITIES |
FULL HARDWARE REDUNDANCY
Hot-swappable controllers, fans, power supplies, disks |
NETWORK CONNECTIVITY |
CHASSIS |
MEMORY |
MAXIMUM NUMBER OF ARRAYS PER PS SERIES GROUP |
ENTERPRISE DATA SERVICES |
| PS6000E |
4, 8, 16 or 32 TB |
16—7,200 RPM SATA Drives |
250 GB, 500 GB, 1 TB or 2 TB |
Yes1 |
4 Ethernet/iSCSI Ports per Controller |
3U |
2 GB2 or 4 GB |
16 PS Series arrays, including up to 2 PS4000 arrays |
Yes, all inclusive with no separate licenses on all PS Series arrays (see below) |
| PS6500E |
24, 48 or 96 TB |
48—7,200 RPM SATA Drives |
500 GB, 1 TB or 2 TB |
Yes |
4U |
4 GB |
| PS6500X |
28.8 TB |
48—10,000 RPM SAS Drives |
600 GB |
4U |
4 GB |
| PS6000X |
7.2 or 9.6 TB |
16—10,000 RPM SAS Drives |
450 GB or 600 GB |
3U |
4 GB |
| PS6000XV |
4.8, 7.2 or 9.6 TB |
16—15,000 RPM SAS Drives |
300 GB, 450 GB or 600 GB |
3U |
4 GB |
| PS6000XVS |
4.4 TB |
8/8 SAS Drives |
100GB SSD/450 SAS |
3U |
4 GB |
| PS6000S |
400, 800 GB or 1.6 TB |
8 or 16 Solid State Disk (SSD) Drives |
50 or 100 GB |
3U |
4 GB |
| PS6010E |
8, 16 or 32 TB |
8 or 16 –7200 RPM SATA Drives |
500 GB, 1 TB or 2 TB |
2 controllers/array; Two 10 Gb Ethernet/iSCSI Ports per Controller |
3U |
4 GB |
| PS6010S |
800 GB or 1.6 TB |
8 or 16 –100 GB SSD Drives |
100 GB |
3U |
4 GB |
| PS6010X |
9.6 TB |
16 – 10,000 RPM SAS Drives |
600 GB |
3U |
4 GB |
| PS6010XV |
9.6 TB |
16 – 15,000 RPM SAS Drives |
600 GB |
3U |
4 GB |
| PS6510X |
28.8 TB |
48 – 10,000 RPM SAS Drives |
600 GB |
4U |
4 GB |
| PS6510E |
48 or 96 TB |
48 – 7,200 RPM SATA Drives |
1 or 2 TB |
4U |
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| PS4000E |
4, 8, 16 or 32 TB |
16–7,200 RPM SATA Drives |
250 GB, 500 GB, 1 TB or 2 TB |
Yes 1 |
2 Ethernet/iSCSI ports per Controller for I/O; 1 Ethernet port for management |
3U |
2 GB2 or 4 GB |
2 PS4000 arrays |
| PS4000X |
7.2, or 9.6 TB |
16–10,000 RPM SAS Drives |
450 GB or 600 GB |
3U |
4 GB |
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Yes |
| PS4000XV |
4.8, 7.2 or 9.6 TB |
16–15,000 RPM SAS Drives |
300 GB, 450 GB or 600 GB |
3U |
4 GB |
1 - Single-controller options are available for 2 or 4 TB arrays
2 - Single-controller options with 2 GB of memory are available for the 2 or 4 TB SATA arrays
Selecting a Model
Step 1 - Determine how much usable space you will need. You will decide during the initialization process which RAID configuration you want but we typically recommend using RAID50 as the default. It will give you the highest performance balanced with the most capacity.
Tip: You can change the RAID type even after initialization BUT, you can only go to a HIGHER capacity RAID type. If you start with RAID50 you can go to RAID5, but not RAID10. If RAID10 will give you plenty of capacity, start with it; you can always change it to RAID50 later.
Step 2 - Decide if you need a single controller or dual-controller model. Dual controllers make the unit fully redundant and is recommended for primary data.
Tip: Many customers use a dual-controller for their primary site and a single controller unit for their remote (disaster recovery) site. This configuration will save you some money upfront.
Step 3 - Select the type of drives you want; Serial ATA (SATA) or SCSI. The cost per Terabyte is generally lower for the SATA drives because of their higher per drive capacities. If you are unsure then go with the SAS or contact us for a suggestion.
Tip: Although the rotational speed of the SAS drives are faster, don’t assume SATA will not provide enough performance. EqualLogic boxes are built on a frameless design and that means that all disks will be used for I/O (except spares of course).
Step 4 - Select support level you want from the following list:
Customer Care Plus
- Hardware onsite replacement within 4 hours
- Software updates for length of agreement
- Knowledge base access online 24 hours a day for length of agreement
- Technical Support Center access 24 hours a day, 1 hour response time peak (9×5), 2 hour off peak for length of agreement
Customer Care
- Hardware advanced replacement next business day
- Software updates for length of agreement
- Knowledge base access online 24 hours a day for length of agreement
- Technical Support Center access 24 hours a day, 2 hour response time peak (9×5), 4 hour off peak for length of agreement
Standard Warranty
- Two-year standard warranty period
- Hardware advanced replacement next best date for first 90 days, return to factory for repair for remainder of warranty period
- Software updates for one-year
- Knowledge base access online 24 hours a day for one year
- Technical Support Center access (9×5), best effort for length of warranty period
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